Radial piston motors Hägglunds CBm

Description

Features

• High power density
• High torque density
• Energy efficient
• Flexible, many sizes, few mechanical interfaces
• Insensitive for shock loads
• Very low moment of inertia
• Small footprint (total occupied volume)
• Freewheeling possibility
• Through hole diameter 270 mm
• Tandem mounting possibilty
• High starting torque
• 4-quadrant operation
• Dynamic brake
• Constant torque throughout speed range
• Frequent start/stop capacity

Product description

When it comes to production, everyone wants more. But these days there’s less of everything else: from available time to the energy and resources for the job. With the Hägglunds CBm direct drive from Bosch Rexroth, the equation is easier to solve. The Hägglunds CBm packs 50 % more torque into a motor that’s smaller and 50 % lighter than its predecessor. That gives it the world’s highest torque-to-weight ratio. Even so, it has all the advantages you’d expect from a direct drive. Full torque from zero, protection from shock loads and fourquadrant operation are part of the same small package. Put simply, the Hägglunds CBm does more with less – and lets you do the same. From industry to offshore, you can handle more work with less space, less energy and less weight on the driven shaft. That means greater productivity with a smaller footprint. And that’s an ingenious solution.

Bosch Rexroth hydraulics technology is counted on worldwide to deliver outstanding performance in industrial and mobile applications. As the technology leader, we refine each system to incorporate the quality and capabilities you need to help maximize your system performance.

Section view of radial piston hydraulic motor

Bosch Rexroth‘s hydraulic industrial motor Hägglunds CBm is of the radial piston type with a rotating cylinder block/hollow shaft and a stationary housing. The cylinder block is mounted in fixed roller bearings in the housing. An even number of pistons are radially located in bores inside the cylinder block, and the distributor directs the incoming and outgoing oil to and from the working pistons. Each piston is working against a cam roller.

When the hydraulic pressure is acting on the pistons, the cam rollers are pushed against the slope on the cam ring that is rigidly connected to the housing, thereby producing a torque. The cam rollers transfer the reaction force to the pistons which are guided in the cylinder block. Rotation therefore occurs, and the torque available is proportional to the pressure in the system.

Oil main lines are connected to ports A1 and C1 in the connection block and drain lines to one of the D-ports in the motor housing.

The motor is connected to the shaft of the driven machine through the hollow shaft of the cylinder block. The torque is transmitted by splines.

Features as an option for Hägglunds CBm:

Read for information:

Chapter "Techncial data" – section "Through hole kit"

Features included as standard in Hägglunds CBm:

Read for information:

Chapter "Technical data" – section "Magnetic plug"

Chapter "Technical data" – section "Temperature sensor"

Quality

To assure our quality we maintain a Quality Assurance System, certified to standard ISO 9001.

Fluid connections

Hydraulic symbol

Port locations and dimensions, see table "Port dimensions".

Port connections

Connection side of the motor

Shaft side of the motor

Port dimensions

Type code

In order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in all correspondence e.g. when ordering spare parts.

Technical data

Calculation fundamentals

Output power		kW (on driven shaft)
Output torque (ηm = 98 %)		Nm
Pressure required (ηm = 98 %)		bar
Flow rate required		l/min
Output speed		rpm
Inlet power		kW

Recommended charge pressure

The hydraulic system must be such that the motor will recieve sufficient charge pressure at the low pressure port. This applies to all types of installations.

The motor working in driving mode only

For CBm 2000 - CBm 6000. The pressure at the low pressure port, should, during operation of the motor, be at least 1 bar above the case pressure independent of numbers of ports that are connected. Two cases to be considered:

Case 1: No shock loads.

Required charge pressure = case pressure + 1 bar during operation, but shall not be below 2 bar

Case 2: With shock loads.

Required charge pressure at the outlet port corresponds to 30 % of value given in diagram. See Figure "Recommended charge pressure for motor working in braking mode, Hägglunds CBm 4-port connection. Valid for oil viscosity 40 mm2/s" and Figure "Recommended charge pressure for motor working in braking mode, Hägglunds CBm 8-port connection. Valid for oil viscosity 40 mm2/s"

The motor working in braking mode

Required charge pressure at the inlet port is according to diagram. See Figure "Recommended charge pressure for motor working in braking mode, Hägglunds CBm 4-port connection. Valid for oil viscosity 40 mm2/s" and Figure "Recommended charge pressure for motor working in braking mode, Hägglunds CBm 8-port connection. Valid for oil viscosity 40 mm2/s".

Notice!

The diagrams is valid for 1 bar case pressure.

With increasing case pressure the charge pressure must be increased accordingly.

Recommended charge pressure for motor working in braking mode, Hägglunds CBm 4-port connection. Valid for oil viscosity 40 mm2/s.

Recommended charge pressure for motor working in braking mode, Hägglunds CBm 8-port connection. Valid for oil viscosity 40 mm2/s.

Hydraulic fluids

The hydraulic motor Hägglunds CBm is primarily designed for operation with hydraulic fluids according to ISO 11158 HM.

Before the start of project planning, see data sheet RE 15414, Hydraulic fluid quick reference, for detailed information on hydraulic fluids and specific additional demands.

Applicable fluids

Filtration of the hydraulic fluid

A contamination level better than 18/16/13 according to ISO 4406 is required.

The less contamined the fluid, the longer the service life of the hydraulic motor.

Details regarding the selection of hydraulic fluid

The hydraulic fluid should be selected such that the operating viscosity in the temperature range, as measured in the motor housing, is within optimum operation range, see Figure "Selection diagram for viscosity ranges with straight fluids, i.e. viscosity index 100." General recommendation is to have a system temperature of 50 °C, see dotted line in figure below. An ISO VG 68 fluid will render just above 40 mm2/s at this point.

• Optimum viscosity range is 40 to 150 mm2/s.

• Running above 150 mm2/s or below 40 mm2/s results in reduced efficiency.

• Running above 400 mm2/s results in substantial efficiency loss.

• Starting at above 10000 mm2/s imparts unnecessary strain on parts.

• Running below 30 mm2/s may impact service life.

• Running below 20 mm2/s may render instant seizure.

The operating temperature is also limited by the seal type, see Table "General data".

Selection diagram for viscosity ranges with straight fluids, i.e. viscosity index 100

Fire resistant fluid

Operating with fire resistant fluids (ISO 12922)

Operating with fire resistant fluids

Down rating of pressure data and basic rating life

There are fluids with lesser lubricity, or characteristics incompatible with the system components, that needs specific precautions.

For these fluids, maximum pressure and rated life must be down-rated. See Table "Down-rating factors" for fluids that are subject to down-rating.

Down-rating factors

Notice!

Bosch Rexroth or its authorised representative must always be contacted for approval in the case of these types of fluids.

Environmentally acceptable fluids (ISO 15380)

Overall efficiency

The diagrams are valid for oil viscosity 40 mm2/s and low pressure 15 bar at the motor main ports A or C.

Number of port connections recomended:

• 2-port for oil flow up to 750 l/min

• 4-port for oil flow up to 1500 l/min

• 6-port for oil flow up to 2250 l/min

• 8-port for oil flow up to 3000 l/min

Overall efficiency - CBm 2000

Hägglunds CBm 2000-1000, 4 port connection	Hägglunds CBm 2000-1000, 8 port connection
Hägglunds CBm 2000-1200, 4 port connection	Hägglunds CBm 2000-1200, 8 port connection
Hägglunds CBm 2000-1400, 4 port connection	Hägglunds CBm 2000-1400, 8 port connection
Hägglunds CBm 2000-1600, 4 port connection	Hägglunds CBm 2000-1600, 8 port connection
Hägglunds CBm 2000-1800, 4 port connection	Hägglunds CBm 2000-1800, 8 port connection
Hägglunds CBm 2000-2000, 4 port connection	Hägglunds CBm 2000-2000, 8 port connection

Overall efficiency - CBm 3000

Hägglunds CBm 3000-2200, 4 port connection	Hägglunds CBm 3000-2200, 8 port connection
Hägglunds CBm 3000-2400, 4 port connection	Hägglunds CBm 3000-2400, 8 port connection
Hägglunds CBm 3000-2600, 4 port connection	Hägglunds CBm 3000-2600, 8 port connection
Hägglunds CBm 3000-2800, 4 port connection	Hägglunds CBm 3000-2800, 8 port connection
Hägglunds CBm 3000-3000, 4 port connection	Hägglunds CBm 3000-3000, 8 port connection

Overall efficiency - CBm 4000

Hägglunds CBm 4000-3200, 4 port connection	Hägglunds CBm 4000-3200, 8 port connection
Hägglunds CBm 4000-3400, 4 port connection	Hägglunds CBm 4000-3400, 8 port connection
Hägglunds CBm 4000-3600, 4 port connection	Hägglunds CBm 4000-3600, 8 port connection
Hägglunds CBm 4000-3800, 4 port connection	Hägglunds CBm 4000-3800, 8 port connection
Hägglunds CBm 4000-4000, 4 port connection	Hägglunds CBm 4000-4000, 8 port connection

Overall efficiency - CBm 5000

Hägglunds CBm 5000-4600, 4 port connection	Hägglunds CBm 5000-4600, 8 port connection
Hägglunds CBm 5000-5000, 4 port connection	Hägglunds CBm 5000-5000, 8 port connection

Overall efficiency - CBm 6000

Hägglunds CBm 6000-5600, 4 port connection	Hägglunds CBm 6000-5600, 8 port connection
Hägglunds CBm 6000-6000, 4 port connection	Hägglunds CBm 6000-6000, 8 port connection

Pressure loss diagrams

Pressure loss, oil viscosity 40 mm2/s

Quick selection diagram

Rated life for Hägglunds CBm is calculated according to DIN ISO 281 Apendix 1.

The diagram below represents the torque and speed, corresponding to a modified rating life L10mh = 40 000 h. Oil viscosity in motor case 40 mm2/s. Contamination level not exceeding ISO 4406:1999 18/16/13 (NAS 1638, class 7). The diagram is based on a charge pressure of 15 bar.

Quick selection diagram

Notice!

Higher case oil viscosity increases the motor rating life considerably.

Reduced temperature in the motor case, increase rating life for the motor.

Draining, venting and flushing of the motor

Horizontal mounting

Horizontal mounting

When the motor is installed with the shaft in the horizontal plane, the highest of the four drain outlets D1, D2, D3 or D4 must always be used (see Figure "Horizontal mounting"). Drain line must be connected to the tank with a minimum of restrictions, to ensure that the maximum case pressure is not exceeded.

A magnetic plug is pre assembled from factory in connection T8, in the drain outlet D3.

Vertical mounting

Vertical mounting

When the motor is mounted vertically, one of the highest drain ports D1 to D8 must be used.

Flushing (lubrication) of radial seal from low pressure is necessary.

A) Motor shaft pointing downwards

The drain line must be connected to one of the drain ports D1 to D4 in the connection block. (See Figure "Vertical mounting" alt.: A) Shaft side downwards).

The flushing connection F2 shall be connected to low pressure. With bidirectional drives, use the connection with lowest average pressure.

(Connecting to high pressure will increase the motor drain flow).

B) Motor shaft pointing upwards

The drain line must be connected to one of the drain ports D5 to D8 in the shaft end housing. (See Figure "Vertical mounting", alt.: B) Shaft side upwards). The flushing connection F1 on the shaft end housing should be connected to the low pressure. With bidirectional drives, use the connection with lowest average pressure.

(Connecting to high pressure will increase the motor drain flow).

Flushing

Flushing of motor case

The CBm motors have very high overall efficiency, and they are frequently used in applications with high power.

To avoid high temperature in the case, the losses generated in the motors must be cooled away. High temperature gives lower viscosity and this gives reduction in basic rating life and max allowed power for the motor.

Flushing flow inlets, see Figure "Horizontal mounting" and Figure "Vertical mounting".

For continuous duty the motors must be flushed when power exceed the following max power:

Maximum motor power without flushing

When the motor have to be flushed, the required flushing flow can be calculated according to following:

E1 = Power loss due to mechanical losses = c ⋅ motor power

E2 = Power loss due to volumetric losses

Heat transmitted to air at ambient temperature +20 °C and motor case temperature +50 °C.

Hägglunds CBm 2000–6000 2.5 kW

c = 0.01 for Hägglunds CBm. Total power loss ET = E1 + E2

Required flushing to keep motor case maximum 10 °C warmer than flushing oil:

q flushing = 3.4 · (E1 + E2 - Heat transmitted to air) l/min.

Viscosity in the motor case must be controlled according to diagram, Figure "Selection diagram for viscosity ranges with straight fluids, i.e. viscosity index 100".

Example:

Hägglunds CBm 2000 working at 200 bar and n = 20 rpm.

The motor case must be flushed

q flushing = 3.4 · (E1 + E2 - Heat transmitted to air) = 3.4 · (8.45 + 2.7 - 2.5) = 29 l/min

External leakage

External leakage is from the distributor to the motor case and from the piston assembly to the motor case.

External leakage

Valid for 40 mm²/s

The diagram shows the avarage values.

Actual flow rate = speed ⋅ displacement + external leakage

Viscosity factor K

Variation in external leakage at different oil viscosities. When calculating external leakage using other viscosities than 40 mm2/s, multiply the value given in the external leakage diagram by the factor K.

Viscosity factor K

Freewheeling

The function of freewheeling

Hägglunds CBm motors can be operated in freewheeling. Principally this is performed by disengaging the pistons, allowing the rotating group to rotate as a flywheel on its main bearings. The piston units are not engaged and thus there is no oil flow to cause a flow loss, Hägglunds motors of standard design are suitable for this performance due to the following facts:

• Pistons are not actuated by any return springs.

• The motor case can withstand sufficient case pressure to force the pistons toward the bottom of each cylinder bore and keep them in this position.

The basic function of the freewheeling is to have the drain ports D1-D8 lightly pressurized while main ports A and C are without restriction drained directly to the fluid reservoir. See figure "Schematic principle freewheeling". The case pressure introduced in the normal drain connection will then act on the outer surface of each piston assembly pressing them towards the motor centre.

The rotating part of the motor (cylinder block with piston and cam roller) can now rotate on its main bearings without any pumping of oil, as the piston with cam rollers have lost any contact with the cam ring. See Figure "Freewheeling".

During freewheeling periods, the following functions must be performed:

• Main connections A & C of the motor drained to reservoir.

• Fail-safe type brake released, if used.

• An adequate pressure introduced into the drain ports of the motor. See Figure "Power loss freewheeling, oil viscosity 40 mm²/s".

Freewheeling

Notice!

It is not allowed for the pistons to extend back to the camring, until the motor has reached a complete standstill.

Circuit design

The following schematic explains a system (closed/open) with freewheeling (activated mode illustrated) as a permanent feature for the application.

Schematic principle freewheeling

Freewheeling valve function, see chapter "Accessories" – section "Freewheeling valve VFWCB 600".

Oil volume for freewheeling

Freewheeling conditions are obtained by pressurizing the case via the drain connections and drain the main ports to tank. To retract all pistons completely, a certain oil volume is required depending upon motor type. This oil volume can be calculated from the following:

In word:

Required freewheeling volume is the displacement of the motor divided by twice the number of cam lobes for one camring.

Number of cam lobes for CBm motors:

CBm 2000 = 18 lobes/camring

CBm 3000 = 18 lobes/camring

CBm 4000 = 18 lobes/camring

CBm 5000 = 18 lobes/camring

CBm 6000 = 18 lobes/camring

Freewheeling can be achieved in several ways depending upon type of application. One way of solving the problem is via an accumulator providing required freewheeling volume when main ports are opened to tank. The size of the accumulator can be calculated when considering that the case pressure should be set at 1.5 ... 2 bar in freewheeling circuits. Thus the required volume should be obtained at a pressure drop in the accumulator from 2 bar down to 1.5 bar.

It should also be mentioned here that freewheeling conditions can be reached via the oil flow from either charge pump or main pump. The accumulator is then not necessary and Freewheeling can be obtained very fast.

A case pressure of 1.5 ... 2 bar must be maintained in the motor case also when motor is not in a freewheeling position. These requirements are normally reached by installing a 1 ... 1.5 bar relief value in the return drain line from the motor.

Power loss freewheeling

Even if the freewheeling operation takes place with lowest possible friction in the main bearings and with no flow losses in the main ports of the motor, a powerloss must take place in the motor case due to viscous friction between moving and fixed parts. This powerloss is expressed in diagram, Figure "Power loss freewheeling, oil viscosity 40 mm²/s".

Case flushing is required to prevent overheating, see Figure "Power loss freewheeling, oil viscosity 40 mm²/s".

Required case pressure 1.5 ... 2 bar.

Case oil temperatur to be below 50 °C.

Power loss freewheeling, oil viscosity 40 mm²/s

Notice!

Freewheeling will require exchange of oil in the housing to prevent overheating.

In order to accomplish proper freewheeling, a case pressure of 1.5 bar has to be maintained. On the other hand, a higher casing pressure than 2 bar should be avoided in order to achieve good life of the main radial shaft seal.

Permissible external loads

External load with torque arm mounting

Shaft mounted motor with torque arm

If non standard torque arms TCA are used, forces must be checked for main bearings and coupling.

Permissible external dynamic loads

Permissible external dynamic loads Hägglunds CBm 2000

Torque arm mounted motor. Viscosity 40 mm2/s, speed 10 rpm.

Notice!

When flange mounted motor, please contact Bosch Rexroths representative.

Axial loads: Permissible axial load for intermittent duty

Fa = 150 000 N.

Remark: For continuous axial load applications, please contact your Bosch Rexroth representative.

Permissible external dynamic loads Hägglunds CBm 3000

Torque arm mounted motor. Viscosity 40 mm2/s, speed 6 rpm

Notice!

When flange mounted motor, please contact Bosch Rexroths representative.

Axial loads: Permissible axial load for intermittent duty

Fa = 150 000 N.

Remark: For continuous axial load applications, please contact your Bosch Rexroth representative.

Permissible external dynamic loads CBm 4000

Torque arm mounted motor. Viscosity 40 mm2/s, speed 4 rpm.

Notice!

When flange mounted motor, please contact Bosch Rexroths representative.

Axial loads: Permissible axial load for intermittent duty

Fa = 150 000 N.

Remark: For continuous axial load applications, please contact your Bosch Rexroth representative.

Permissible external dynamic loads CBm 5000

Torque arm mounted motor. Viscosity 40 mm2/s, speed 3 rpm.

Notice!

When flange mounted motor, please contact Bosch Rexroths representative.

Axial loads: Permissible axial load for intermittent duty

Fa = 150 000 N.

Remark: For continuous axial load applications, please contact your Bosch Rexroth representative.

Permissible external dynamic loads CBm 6000

Torque arm mounted motor. Viscosity 40 mm2/s, speed 2.5 rpm.

Notice!

When flange mounted motor, please contact Bosch Rexroths representative.

Axial loads: Permissible axial load for intermittent duty

Fa = 150 000 N.

Remark: For continuous axial load applications, please contact your Bosch Rexroth representative.

Permissible external static load

Low speed performance

For Hägglunds CBm 2000 to CBm 6000

Figure "Speed deviation" shows speed deviation factor "i" as function of nav.

A is max. deviation from average speed in r/min.

nav is average speed in r/min.

A = nav · i (rpm)

nmax = nav + A (rpm)

nmin = nav - A (rpm)

The figure refers to 40 mm2/s viscosity, and moment of inertia 600 kgm2.

Speed deviation

Example:

nav = 1 gives i = 0.028 (see figure) and A = 1 · 0.28 = 0.03 rpm.

Obtained amplitude value shall be reduced to two decimals.

nmax = 1.0 + 0.03 = 1.03

nmin = 1.0 - 0.03 = 0.97

Speed variation data was acquired according to ISO 4392-3 where torque on the shaft and flow into the motor is held constant.

In order to obtain smooth operation at low speed it is important to understand that the mechanisms behind speed variation are governed by leakage and friction variation in the motor together with characteristics of the load and the hydraulic system.

When the theoretical flow needed to rotate the motor is in the same order of magnitude or less than the leakage flow there is a risk for speed variation. Friction losses in the motor will increase at low speed due to reduced oil film thickness. Any variation in these friction losses may result in speed variation.

• Speed variation resulting from both friction and leakage will be lower with high case oil viscosity. Recommendation is to have a case oil viscosity between 100 ... 150 mm2/s.
  The load characteristics on the shaft will also affect speed variation, for example moment of inertia, friction effects and natural frequency.

• Smooth operation at low speed is enhanced by a constant flow source, like a flow control valve or a small pump that is not operating in its lower displacement range.
  Compressibility of hydraulic oil volume between flow source and motor and deformation of hoses may also result in speed variation, especially if the natural frequency of the hydraulic system and the load is close to each other.

• Therefore, smooth operation is enhanced by a stiff hydraulic system connecting the flow source and the motor, i.e. using short pipings with small dimension.

Magnetic plug

General

A magnetic plug is pre assembled in the Hägglunds CBm from factory. By regularly inspecting the magnetic plug a malfunction of the hydraulic system can be detected and corrected. The magnetic plug can also be used for early detection of wear or spall damages in the motor. The magnetic plug is installed in connection T8, in the drain outlet D3. If other drain outlet is used (D1-D2, D4-D8), the magnetic plug should be moved to the connection (T7 or T9) in the selected drainage.

Magnetic plug mounted on CBm 2000

For inspection and maintenance routines, see Installation and maintenance manual: RE 15300-WA.

Temperature sensor

Function

The temperature sensor is mounted in the motor case and operates according to the hydraulic fluid temperature variation. The sensor element is a Pt100 resistance sensor, which change resistance in relation to the fluid temperature in the motor case.

Technical data, Pt 100/4-20 mA sensor

Material ID: R939005085 Temperature sensor

Item number: 577 7112-083 Temperature sensor

Technical data, Pt 100/4-20 mA sensor

Temperature sensor

Dimensions in mm

Temperature sensor

Painting system

Corrosion protection

The painting system of Hägglunds motors and accessories are available in two different corrosivity categories regarding corrosion protection in accordance with SS-EN ISO 12944:

• C3 - Corrosivity category Medium - which is recommended for normal urban and industrial atmosphere.

• C5M - Corrosivity category Very High - which is recommended for marine environment with high salt load or other aggressive atmosphere.

Colour

Standard colour for Hägglunds motors and accessories is orange (RAL 2002)

Type of seal

Option N:

NBR (Nitrile) Preferred alternative at low ambient temperatures and moderate case oil temperatures.

See Table "General data".

Option V:

FPM (Viton) Preferred alternative at higher case oil temperatures and freewheeling at higher speed or operating with fire resistant fluids. See Table "General data", section "Power loss freewheeling" and Table "Operating with fire resistant fluids".

Increased robustness

Option A:

CBm has DLC-coated pistons and piston rings as standard. That give no limitation for low speed even down to 0.03 rpm at maximum pressure.

Option C:

If there is a risk for cavitation in combination with shock loads and/or low oil viscosities below 20 mm2/s in motor case, there is an option to also have DLC-coated cam rollers.

Through hole kit

This device makes it possible to flush through the driven shaft or to draw electric cables through the motor. The through hole kit is prepared for rotation speed sensor.

Dimension drawing

See chapter "Information" – Table "Related documents"

Ordering code

See ordering code for Hägglunds CBm in chapter "Type Code".

Example: Hägglunds CBm 2000 with Through hole kit

Dimensions in mm

Symbols/Circuit diagrams

Circuit design

Closed circuit

Things to consider:

• Level of charge pressure.

• Requirement of bleed off feature.

• Flushing of motor case and pump case when needed.

• Filter between motor and pump.

• Cooler in the return line.

Open circuit

Things to consider:

• Counter pressure required minimum 2 bar to ensure piston function.

• Cross relief valves for blocked protection.

• Anticavitation valves to ensure piston function.

• Return line filter.

• Case drain circulation

• Cooler in the return line

Dimensions

Dimensions CBm 2000

Dimensions CBm 3000

Dimensions CBm 4000

Dimensions CBm 5000

Dimensions CBm 6000

Mounting

Mounting alternatives

General information

With splines for flange or torque arm mounting.

The splines shall be lubricated, and filled with hydraulic oil at assembly, or filled with transmission oil from the connected gearbox. To avoid wear in the splines, the installation must be within the specified tolerances in Figure "Flange mounting for CBm 2000 to 4000".

For requriements of spline shaft, see chapter "Information" – Table "Related documents".

Flange mounted motor with splines and through hole for cooling of the driven machine

Torque arm mounted motor with splines

Torque arm mounted motor with coupling adapter

Flange mounted motor with splines and low radial load from driven shaft

Flange mounted motor with splines and high radial load from driven shaft

Flange mounting with splines

Flange mounting for CBm 2000 to 4000

Features

• Possibility to use the motor as a one side shaft support bearing.

• Oil lubrication of splines give no wear.

• Easy mounting of motor to driven shaft.

Note!

Flange mounting gives high risk for overloading of motor main bearings. Always check that the shaft and motor bearings are statically determined.

Recommended material in the splineshaft

Torque arm mounting with splines

Recommended material in the shaft, see Table "Recommended material in the splineshaft"

Spline designation shaft, see Table "Spline designation shaft"

Submerged application

Valid for Hägglunds CBm 2000 to CBm 4000.

The motor is designed for flange mounted spline motors and submerged applications.

The dimensional drawing for design of flange, and item number for O-rings, see chapter "Information" – Table "Related documents".

Data

Max depth in water is 70 m.

To order

O-rings, see Dimension drawing submerged applications chapter "Information" – Table "Related documents".

Special index motor S-11, prepared for submerged applications.

Painting system C5M-Corrosivity category Very High.

Information

Related documents

Accessories

Torque arm mounting alternatives

Torque arm mounting

For dimensions, techical data, order code and material ID, see separate data sheet: RE 15355

Torque arm mounting with spline	Torque arm mounting with coupling adapter
1) Spline shaft on driven machine	1) Plain shaft on driven machine
Features	Features
Easy mounting i.e. no alignment problems.	Easy mounting i.e. no alignment problems.
Quick mounting of motor to driven shaft.	Quick mounting of motor to driven shaft.
Robust torque-transmitting.	Simplified machining of customer shaft.
Controlled external forces on driven shaft.	Controlled external forces on driven shaft.
Space saving. i.e. close mounting to the driven machine.
1) Spline shaft on driven machine	1) Plain shaft on driven machine
Features	Features
Easy mounting i.e. no alignment problems.	Easy mounting i.e. no alignment problems.
Quick mounting of motor to driven shaft.	Quick mounting of motor to driven shaft.
Robust torque-transmitting.	Simplified machining of customer shaft.
Reduction of external forces on driven shaft.	Reduction of external forces on driven shaft.

Coupling adapter

The coupling adapter includes shrink disk and adapter shaft.

Mounting kit must be ordered separately.

The coupling adapter is designed only for torque arm mounting.

Motor with coupling adapter

Dimensions motor with coupling adapter

Maßangaben in mm

​CBm	CBm 2000
CBm 3000	CBm 4000
CBm 5000	CBm 6000

Dimensions motor with coupling adapter

Dimensions and material for shaft end, plain shaft

Shaft end, normally loaded

Dimensions in mm

Design of driven shaft end on normally loaded shaft

In drives with only one direction of rotation and/or load where the stresses in the shaft are moderate, the shaft can be plain.

Shaft end, heavily loaded

Dimensions in mm

Design of driven shaft end on heavily loaded shaft

Where the driven shaft is heavily loaded and is subject to high stresses, for example for changes in the direction of rotation and/or load, it is recommended that the driven shaft should have a stress relieving groove.

Shaft recommendations

Note! The dimensions are valid at 20 °C

Threads for assembly tool (plain shaft)

Recommended material in the shaft

Hägglunds tandem motors

A Tandem motor consists of 3 major units, Front motor + Tandem kit TBM xx + Rear motor. On the stamping sign on the Tandem kit, the max pressure and the total weight for the complete unit are declared. Note that the complete Ordering code for a Tandem motor, contains of 3 individual Ordering codes (3 parts).

Dimensions drawings:

CBm 2000 + TBM 40 +CBP 400: See chapter "Information" – Table "Related documents".

Stamping for TBM-unit

Example for torque arm mounting, CBm 2000 XXXX SB0X0A XX XX + TBM 40 0 00 00 + CBP 400 XXX SA0V00F XX XX+ Mounting kit R939055413

Dimensions in mm

Speed sensor – Hägglunds CBm with SPDC

No through hole

With through hole

For technical data, see document nr: RE 15350

Features

• Slim design fully integrated in motors

• Non-contact, wear free sensing system

• Possibility to read directions of rotation from sensor

• 4544 pulses per revolution for good speed control possibility

• Protection class IP67

Description

Speed sensing unit, Hägglunds SPDC, is a digital incremental encoder using magnetic sensing technology.

The sensor generates two square wave signals with 90°phase shift for detection of speed and direction of rotation.

Speed sensor – Explosion proof speed sensor SPDB 2

SPDB 2

For technical data, see document nr: RE 15352

Features

• ATEX/IECEx approved

• 1000 and 3600 pulses per revolution for good speed control possibility.

• Possibility to read directions of rotation from sensor

• Sensor is equipped with zero pulse

• Protection class IP65

• Optional cable set with juction box to simplify connection R939003770

Description

Digital incremental hollow shaft sensor with torque arm mounting.

Recommendations:

1000 pulses for speed 6 rpm and above.

3600 pulses for speed below 6 rpm.

Speed Sensor – Inductive speed sensor SPDE with through hole unit

Inductive speed sensor SPDE with trough hole unit

Dimensions in mm

For technical data, see document RE 15351

Features

• Non-contact, wear free system

• Robust design

• ATEX/IECEx -version available

• Through hole version available

Description

Two types of sensors are available.

• The standard type has a PNP output for direct driving of load or digital input.

• The ATEX/IECEx type (explosion proof) needs an isolation amplifier outside explosive area.

The sensor is mainly intended for speed indication.

Direction of rotation cannot be indicated.

Mounting is done by replacing a plug on the motor with the sensor and tighten to 35 Nm.

To order:

Valves

Cross-over valves, COCB 1000-1, -3

For technical data, see document nr: RE 15376

Features

• Compact and robust design

• Mounted directly on Hägglunds motors

• Protect the motor from high pressure peaks

• Provides cavitation protection

• Oil exchange for closed loop system

The valve COCB is designed for Hägglunds motors and provides cross-line relief at pressure shocks and cavitation protection. The relief valves have a standard setting of 350 bar but can be delivered with preset pressure levels down to 280 bar in steps of 10 bar. Pressure setting is made without charge pressure. The charge pressure relief valve (COCB 1000-3) has a standard setting of 15 bar but is adjustable down to 3 bar.

Hydraulic circuit COCB 1000 1

Counter balance valve, VCBCA 1000

For technical data, see document nr: RE 15379

Features

• Compact and robust design

• Mounted directly on Hägglunds motors

• Counter balance function with low pilot pressure

• Pilot pressure independent of load pressure

The VCBCA valve is designed for Hägglunds motors and provides counter balance functions on the motor high pressure line and straight through connection on the motor low pressure line. The maximum operating pressure is 350 bar and maximum flow 1000 l/min.

Hydraulic circuit VCBCA 1000 00 00

Free circulation valve with freewheeling, VFCCA 1000

For technical data, see document nr: RE 15381

Features

• Compact and robust design

• Mounted directly on Hägglunds motors

• Free circulation function with minimal pressure drop

• Free circulation shift allowed up to 40 rpm

• Freewheeling function

• Shifting from drive operation into freewheeling allowed up to 10 rpm

The VFCCCA valve is designed for Hägglunds motors and provides free circulation or freewheeling functions. The maximum operating pressure is 350 bar and maximum flow 1000 l/min.

The valve is available in two configurations:

VFCCA 1000 H Free circulation valve Hydraulic operated

VFCCA 1000 E Free circulation valve Electric operated 24 VDC

Four-way valve, V4WCA 1000

For technical data, see document nr: RE 15382

Features

• Compact and robust design

• Mounted directly on Hägglunds motors

• Four way directional and flow control of motor

• Proportionally controlled flow of the motor

• Counter balance function on motor pressure line

The V4WCA valve is designed for Hägglunds motors and provides four way directional and flow control of the motor. The flow is controlled proportional by external pilot pressure applied to ports X1 and X2. The valve includes a counter balance function on the motor pressure line. Maximum operating pressure is is 350 bar and maximum flow 1000 l/min.

The valve is available in one configuration:

V4WCA-1000 including adapter

Hydraulic quick stop valve, VQCB 800

For technical data, see document nr: RE 15375

Features

• Compact and robust design

• Mounted directly on Hägglunds motors

• Fast response time

The VQCB 800 valve is designed for Hägglunds motors and provides quick stop for a roll mill rolls without stopping the electric motor and without any need of mechanical brake. A very short braking time is possible due to the small moment of inertia and quick response from hydraulic valve. Maximum operating pressure is 350 bar and maximum flow 800 l/min.

Hydraulic circuit VQCB 800

Freewheeling valve VFWCB 600

For technical data, see document nr: RE 15380

Features

• Compact and robust design

• Multifunctional

• Mounted directly on Hägglunds motors

• Detent function on pilot valve

• Possible for remote control

The VFWCB 600 valve is designed for Hägglunds motors and provides freewheeling of the motor by means of disconnecting the motor from the main lines and connect both motor ports to T which has to be drained to tank. The valve can be mounted directly onto the motor via an adapter and can be used in both open and closed loop applications. Maximum operating pressure is 350 bar and maximum flow 1000 l/min. Nominal flow is 600 l/min.

The valve is available in three main configurations:

VFWCB 600 E Freewheeling valve electrically operated

VFWCB 600 H Freewheeling valve hydraulically operated

VFWCB 600 M Freewheeling valve manually operated

Hydraulic circuit VFWCB 600

Speed sensor

Hägglunds SPDC

Speed sensor

Hägglunds SPDC

• Valid for:
  • Hägglunds CA
  • Hägglunds CA with BICA
  • Hägglunds CB
  • Hägglunds CBP
  • Hägglunds CBM

• Data sheet

Speed sensor, explosion proof

Hägglunds SPDB 2 with mounting set

Speed sensor, explosion proof

Hägglunds SPDB 2 with mounting set

• Valid for: Hägglunds motors CA, CB, CBP and CBM

• Data sheet

Single ended torque arms

Hägglunds TCA

Single ended torque arms

Hägglunds TCA

• Valid for: Hägglunds motors CA, CB, CBP and CBM

• Data sheet

Hydraulic quick stop valve

Hägglunds VQCB 800

Hydraulic quick stop valve

Hägglunds VQCB 800

• Valid for Hägglunds CA, CB, CBP, CBM
• Maximum flow 800 l/min
• Fast response time, i.e. 100 ... 150 ms
• Maximum pressure 350 bar
• Open and closed loop

• Data sheet

Cross-over valve

Hägglunds COCB 700, COCB 1000
Includes valves for ATEX environment

Cross-over valve

Hägglunds COCB 700, COCB 1000
Includes valves for ATEX environment

• Valid for: Hägglunds motor CA, CB, CBM
• Maximum flow 700 l/min, 1000 l/min
• Maximum pressure 350 bar
• Open and closed loop hydraulic system

• Data sheet

Counter balance valve

Hägglunds VCBCA 1000

Counter balance valve

Hägglunds VCBCA 1000

• Valid for: Hägglunds motor CA, CB, CBM
• Maximum flow 1000 l/min
• Maximum pressure 350 bar

• Data sheet

Freewheeling valve

Hägglunds VFWCB 600
Includes valves for ATEX environment

Freewheeling valve

Hägglunds VFWCB 600
Includes valves for ATEX environment

• Valid for: Hägglunds motor CA, CB, CBM
• Maximum flow 1000 l/min
• Nominal flow 600 l/min
• For closed and open loop hydraulic system

• Data sheet

Free circulation valve

Hägglunds VFCCA 1000
Includes valves for ATEX environment

Free circulation valve

Hägglunds VFCCA 1000
Includes valves for ATEX environment

• Valid for: Hägglunds motor CA, CB, CBM
• Maximum flow 1000 l/min
• Maximum pressure 350 bar
• Open and closed loop hydraulic system

• Data sheet

Four-way valve including counter balance on load line

Hägglunds V4WCA 1000

Four-way valve including counter balance on load line

Hägglunds V4WCA 1000

• Valid for: Hägglunds motor CA, CB, CBM
• Maximum flow 1000 l/min
• Maximum pressure 350 bar

• Data sheet

Ordering codes

Downloads

	Product catalogue Hägglunds CBm Brochure | RE15300-01 | 2018-08-10 | English | PDF | 13MB Product Groups: Radial piston motors
	Radial piston hydraulic motor Data Sheet | RE15300 | 2021-06-30 | English | PDF | 14.3MB Product Groups: Hägglunds CBm Type Hägglunds CBM
	Hägglunds CBm Hydraulinen radiaalimäntämoottori Manual | R-SF 15300-WA | 2021-06-30 | Finnish | PDF | 13.5MB Product Groups: Hägglunds CBm Hägglunds CBm
	Hägglunds CBm Manual de instalación y mantenimiento Manual | RS15300-WA | 2018-11-30 | Spanish | PDF | 14.2MB Product Groups: Hägglunds CBm Hägglunds CBm
	Hägglunds CBm - Manual de instalação e manutenção Manual | RP15300-WA | 2018-11-30 | Portuguese | PDF | 12.1MB Product Groups: Hägglunds CBm Hägglunds CBm
	R-RS15300-WA Руководство по монтажу и техобслуживанию Manual | R-RS15300-WA | 2018-11-30 | Russian | PDF | 12.9MB Product Groups: Hägglunds CBm Hägglunds CBm
	Hägglunds CBm Installation and maintenance manual Manual | RE15300-WA | 2021-06-30 | English | PDF | 13.7MB Product Groups: Hägglunds CBm Hägglunds CBm