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Description
Product description
Structure and attachments
Structural design
1 Ball screw assembly (BASA) with zero-backlash cylindrical single nut
2 End block fixed bearing
3 Cover strip for MKK-040/-065/-080/-110/-140
4 Carriage with runner blocks
5 Strip fixing
6 End plate floating bearing
7 Main body
Attachments
8 Switch bracket
9 Proximity switch
10 Mechanical switch
11 Cable channel
12 Socket/plug
13 Bellows cover for MKK-165
14 Magnetic field sensor
15 Mount
16 Servo motor
17 Timing belt side drive
Motor attachment with mount and coupling
A motor can be attached via a mount and coupling to all linear modules equipped with a ball screw drive.
The mount serves to fasten the motor to the Linear Module and acts as a closed housing for the coupling.
The coupling transmits the motor drive torque free of distortive stresses to the Linear Module’s drive shaft.
Our standard couplings compensate for the system’s thermal expansion.
1 Motor
2 Mount
3 Coupling
4 Linear module
Motor attachment via timing belt side drive
On all linear modules with a ball screw drive the motor can be attached via a timing belt side drive.
This makes the overall length shorter than when attaching the motor with a mount and coupling.
The space-saving, closed pulley housing provides protection for the belt and acts as a motor bracket.
In addition, various gear ratios are available.
The timing belt side drive can be mounted in four different directions.
1 Pulley housing made of anodized aluminum
2In some cases with support bearing for Rexroth Ball Screw Assembly screw journal.
3 Linear module
4 Belt drive with gear ratio: i = 1; i = 1,5; i = 2
5 Servo motor
6 Pre-tensioning of the belt drive: Apply preload force Fpr to the motor (Fpr is stated upon delivery).
7 Cover
8 Belt pulleys attached using tensioning units
9 Cover plate
Technical data
General technical instructions
Note on dynamic load capacities and load moments
Determination of the dynamic load capacities and load moments is based on a travel life of 100 000 m. Often only 50 000 m is actually stipulated.
For comparison:
Multiply values C, Mt and ML from the table by 1.26.
Suitable loads
Regarding the desired nominal life, in general loads for Fcomb, Fm up to around 20 % of the dynamic characteristic values (C, Mt, ML) have generally proven suitable.
See the "Calculation" document in the "Project planning instructions" chapter for the respective Linear Module.
Do not exceed the technical data for the Linear Motion System.
Application point of the effective force (Z1)
Modulus of elasticity E of the Linear Motion System
General technical instructions
Length calculation of the Linear Motion System
| 1) | with protective bellows |
For length calculation values, see the "General Technical Data" table.
Note: Adhere to the section "General technical instructions" and the document "Calculation" in the chapter "Project planning instructions".
Load capacities and moments
| Size | MKK-165 | |||||
| Number of carriages | 1 | |||||
| Lca | mm | 400 | ||||
| d0 x P | mm | - | 40 x 5 | 40 x 10 | 40 x 20 | 40 x 40 |
| Cgw | N | 84100 | ||||
| Cbs | N | - | 31410 | 54000 | 40950 | 39960 |
| Cfb | N | 29000 | ||||
| Mt | Nm | 1803 | ||||
| ML | Nm | 5130 | ||||
| Mx max | Nm | 723 | ||||
| My max | Nm | 2085 | ||||
| Mz max | Nm | 2085 | ||||
| Fy max | N | 34100 | ||||
| Fz1 max | N | 34100 | ||||
| Fz2 max | N | 34100 | ||||
| Z1 | mm | 123 | ||||
| ly | cm⁴ | 2468 | ||||
| lz | cm⁴ | 3527 | ||||
General technical data
| Size | MKK-165 | |||||
| Number of carriages | 1 | |||||
| Lca | mm | 400 | ||||
| d0 x P | mm | - | 40 x 5 | 40 x 10 | 40 x 20 | 40 x 40 |
| Lad | mm | 50 | ||||
| smin 1) | mm | 80 | ||||
| Lmax | mm | 12000 | 4000 | |||
| mca | kg | 16.5 | 17.3 | 17.6 | 18.4 | |
| kg fix | kg | 4.5 | 7.5 | |||
| kg var | kg/mm | 0.037 | 0.045 | |||
| Repeatability (up to ...) | mm | ± 05 | ||||
| 1) | Minimum required travel to ensure a reliable lubrication distribution! If this cannot be achieved, please consult Bosch Rexroth. |
Note: Adhere to the section "General technical instructions" and the document "Calculation" in the chapter "Project planning instructions".
Drive data
| Size | MKK-165 | |||||
| Number of carriages | 1 | |||||
| Lca | mm | 400 | ||||
| d0 x P | mm | - | 40 x 5 | 40 x 10 | 40 x 20 | 40 x 40 |
| mca | kg | 16.5 | 17.3 | 17.6 | 18.4 | |
| kJ fix | kg·mm² | - | 217 | 248 | 381 | 947 |
| kJ var | kg·mm | - | 1.564 | 1.355 | 1.352 | 1.342 |
| kJ m | mm² | - | 0.633 | 2.533 | 10.14 | 40.53 |
| MRs 1) | Nm | - | 2 | 2.4 | 2.2 | 2.6 |
| amax | m/s² | - | 12.2 | 16.8 | 33 | 50 |
| 1) | at 200 min-1 |
Note: For the max. drive torque Mp and max. speed vmax see section on "Diagrams / Characteristic curves".
Drive data for motor attachment using the timing belt side drive
| Size | Motor | d0 x P | up to L1) | Msd2) | Jsd | MRsd | msd | Bt | ||||
| mm | mm | Nm | 10‑6 kgm2 | Nm | kg | |||||||
| i = 1 | i = 2 | i = 1 | i = 2 | i = 1 | i = 2 | i = 1 | i = 2 | |||||
| MKK-165 | MS2N07 | 40 x 5 | 2800 | 26,00 | 13,00 | 7780 | 1260 | 0,60 | 8,40 | 7,20 | 50 AT10 | 50 AT10 |
| 40 x 10 | 2400 | 52,00 | 26,00 | |||||||||
| 40 x 20 | 2400 | 99,30 | 49,60 | |||||||||
| 40 x 40 | 3300 | 99,30 | 49,60 | |||||||||
| 1) | For longer lengths, the permissible drive torque is determined from the variable-length value Mp of the linear motion system as per the diagram. See the chapter "Project planning instructions" |
| 2) | Values for Msd without making allowance for the motor torque. |
Drive data for motor attachment via mount and coupling
| Size | Motor | Coupling | Mount and coupling | ||
| McN | Jc | mc | mfc | ||
| Nm | 10‑6 kgm2 | kg | kg | ||
| MKK-165 | MS2N07 | 115 | 390 | 0,9 | 2,8 |
Normal operating conditions
| Size | MKK-165 | |
| Permissible ambient temperature with Rexroth servo motor 1) | 0 °C ... +40 °C | |
| Permissible ambient temperature for mechanical system 2) | -10 °C ... +60 °C | |
| smin 3) | mm | 80 |
| 1) | Performance losses from 40°C |
| 2) | No passing below the dew point |
| 3) | Minimum required travel to ensure a reliable lubrication distribution! If this cannot be achieved, please consult Bosch Rexroth. |
Note: Application of dirt is not permitted!
Legend
| Symbol | Description | Unit |
| amax | Maximum acceleration travel | m/s2 |
| Bt | Belt type | - |
| Cbs | Dynamic load capacity, ball screw drive | N |
| Cfb | Dynamic load capacity, fixed bearing | N |
| Cgw | Dynamic load capacity, linear guide | N |
| d0 | Nominal diameter of ball screw drive | mm |
| Fy max | Maximum dynamic load in y-direction | N |
| Fz1 max | Maximum dynamic load in z-direction | N |
| Fz2 max | Maximum dynamic load in z-direction | N |
| i | Gear ratio | - |
| Jc | Mass moment of inertia of the coupling | kgm2 |
| Jsd | Reduced mass moment of inertia of timing belt side drive on the motor journal | kgm2 |
| kg fix | Constant for the fixed portion of the mass | kg |
| kg var | Constant for the variable-length portion of the mass | kg/mm |
| kJ fix | Constant for fixed-length portion of mass moment of inertia | kgmm2 |
| kJ m | Constant for mass-specific portion of mass moment of inertia | mm2 |
| kJ var | Constant for variable-length portion of mass moment of inertia | kgmm |
| L | Length | mm |
| Lad | Additional length | mm |
| Lca | Carriage length | mm |
| Lmax | Maximum length | mm |
| LW | Carriage center-to-center distance | mm |
| ly | Y-axis planar moment of inertia | cm4 |
| lz | Z-axis planar moment of inertia | cm4 |
| mc | Mass of the coupling | kg |
| mca | Moved mass of system (carriage) | kg |
| McN | Rated torque of coupling | Nm |
| mfc | Mass of mount and coupling | kg |
| ML | Dynamic longitudinal moment load capacity | Nm |
| MRs | Frictional torque of the system | Nm |
| msd | Mass of timing belt side drive | kg |
| Msd | Maximum permissible drive torque of the timing belt side drive | Nm |
| Mt | Dynamic torsional moment load capacity | Nm |
| Mx max | Maximum admissible torsional moment around the x-axis | Nm |
| My max | Maximum admissible torsional moment around the y-axis | Nm |
| Mz max | Maximum admissible torsional moment around the z-axis | Nm |
| P | Lead | mm |
| se | Excess travel | mm |
| seff | Effective travel distance | mm |
| smax | Maximum travel range | mm |
| smin | Minimum travel | mm |
| Z1 | Application point of the effective force | mm |
Diagrams/characteristic curves
Permissible drive torque
The values for Mp apply for the following conditions:
- Screw journal without keyway
- No radial load on screw journal
Permissible speed vmax
Deflection
Take note of the "General Technical Instructions" section of the "Technical Data" chapter.
Example
Linear Module MKK-080: L = 3000 mm, F = 1500 N
From diagram MKK-080: f = 1.8 mm, fmax = 3.5 mm
The deflection f is significantly less than the maximum permissible deflection fmax, and no additional support is therefore necessary.
The following diagram is valid for:
- both ends firmly fixed (200 to 250 mm per side)
- 6 to 8 screws per side
- solid mounting base
- Lmax must be noted; see the "General Technical Data" table in the "Technical Data" chapter
Dimensions
All dimensions in mm. Drawings not to scale.
| 1) | M4 - 8 deep (4x per side) |
| 2) | Central lubrication (grease lubrication): at any one of the three funnel-type lube nipples DIN 3405-AM6 |
| 3) | Lad = additional length, see "Technical data" chapter |
| 1) | M10 - 20 deep (4x) |
| 2) | For DIN 508-M8 and DIN 557-M10 nut |
| 3) | For cable duct |
Project planning information
Calculation example MKK with timing belt side drive
Calculation
Mounting
Mounting
General information
The linear modules are mounted using various fastening elements:
- Clamping fixtures
- Sliding blocks for size -110 and up
- Square nuts
- Spring nuts
- Screws for T-slots as per DIN 787 (no picture).
Length depends on base.
When mounting Linear Modules, please note the maximum tightening torques listed in the table.
Tightening torques of fastening screws
with friction factor 0.125 strength class 8.8
 | 8.8 | M4 | M5 | M6 | M8 | M10 | M12 |
 | (Nm) | 2,7 | 5,5 | 9,5 | 23 | 46 | 80 |
Mounting with clamping fixtures
Mounting with sliding blocks
| 1) | 85 (size .. -110) 120 (size -165) |
| Size | A | B | C |
| (mm) | (mm) | (mm) | |
| -040 | 52,2 | 65,5 | - |
| -065 | 81,0 | 95,0 | - |
| -080 | 96,0 | 110,0 | - |
| -110 | 132,0 | 150,0 | 85,0 |
| -140 | 170,0 | 196,0 | 105,0 |
| -145 | 172,0 | 198,0 | 78,0 |
| -165 | 192,0 | 218,0 | 120,0 |
Do not support the linear module on end enclosures, end blocks or on end plates!
The frame is the load-bearing part!
Overview of the switching system
1 Socket and plug
2 Mechanical switch with attachments
3 Proximity switch
4 Switch bracket
5 Mounting channel / cable channel
6 Magnetic field sensor with fixed potted cable
(Reed/Hall sensor (for mounting channel))
7 Reed/Hall sensor with plug and sensor holder
7a: Magnetic sensor
7b: Sensor holder incl. set screws (loose) and square nut
7c: Cable holder (3 pcs) incl. set screw (loose)
7d: M8x1 plug (3-pin)
8 Magnetic switch with M8x1 plug
9 Clamping screw
10 Sliding block
Switch mounting MKK/MKR/MLR-xxx-NN-x
MKK/MKR/MLR-xxx-NN-x
Proximity sensors, mechanical switches and accessories (MKK/MKR/MLR)
Mounting instructions:
The mechanical switches, the proximity sensors and the socket with plug and cable channel are fastened with attachments in T-grooves of the main body. Switch activation is carried out by a switch bracket on the carriage.
| Position | Name | Size -065/-080/-140 /-145-NN-3 | -110-NN-3 | -165-NN-2 |
| Material number | ||||
| 1 | Socket-plug | R117500153 | ||
| 2 | Mechanical switch | see accessories | ||
| Mechanical switch with attachments | R117500151 | |||
| 3 | Proximity sensor | see accessories | ||
| - Attachment parts without sensor | R117500152 | R117520152 | R117500152 | |
| 4 | Switching angle | R117500149 | R117500150 | |
| 5 | Cable duct | R039662017 | ||
| These switching versions can only be ordered with these material numbers. |
| Proximity sensor with additional attachment for | Proximity sensor with additional attachment for | Mechanical switch with attachment for |
 |  |  |
| 1) | Cable length: 3 m |
Socket and plug, cable duct
Attach the socket to the side with the most switches. The socket and plug are not pre-wired. The variable sliding attachment allows switching positions to be optimized during start-up. The plug can be mounted in three directions.
Cable duct
The cable duct is fastened in the T-slots on the side of the frame. Fastening screws widen the profile and ensure that the cable duct is securely mounted.
See the illustration for the position of the slot.
The cable duct will accommodate up to two cables for mechanical switches and three cables for proximity switches.
Fastening screws and cable grommets are included.
Mounting examples of switches
Determination of the switching position
Switching distance: The switching distance is the distance between the carriage center (TM) and the zero point (0) when a switch is actuated (indicated in mm). Example of a mechanical limit switch (assuming the zero point is at L/2):
Maximum switching distance = 0.5 x (max. travel distance) – excess travel = 0.5 x effective stroke
For safe operation of the linear module the excess travel must be greater than the braking path.
For MKR... and MLR...: The acceleration travel sa can be assumed as the reference value for the braking distance.
For MKK...: In most cases, the following is sufficient as a guideline value for the excess travel (braking path): Excess travel = 2 x screw lead P.
Note the smallest possible switching distance (determined by attachments):
mechanical-mechanical = 60 mm; mechanical-proximity = 45 mm; proximity-proximity = 28 mm.
for MKR-145: mechanical-mechanical = 62 mm; mechanical-proximity = 49 mm; proximity-proximity = 35 mm
The switches as well as socket with plug are fixed in the upper T-slots of the frame and actuated by a switch tab on the carriage.
Mounting side of the switches:
| 1) | links (L) |
| 2) | right (R) |
| 3) | Direction of travel |
| 4) | 0.5 x stroke |
| 5) | Excess travel |
| 6) | 0.5 x max. travel path |
Commissioning
Parameterization (start-up)
The nameplate contains reference information on the production of the linear motion system as well as technical start-up parameters.
| Position | Symbol | Description |
| 1 | CNR | Customer's part number |
| 2 | TYP | Short product name |
| 3 | 110 | Size |
| 4 | CS | Customer information |
| 5 | MNR | Part number |
| 6 | FD | Manufacturing date |
| 7 | 7210 | Manufacturing location |
| 8 | smax | Maximum travel range |
| 9 | u | Lead constant without motor attachment |
| 10 | vmax | Maximum speed |
| 11 | amax | Maximum acceleration travel |
| 12 | M1max | Maximum drive torque at motor journal |
| 13 | d | Direction of motor rotation to move in positive (+) direction CW = clockwise CCW = counter clockwise  |
| 14 | i | Gear ratio |
| 15 | QR code |
Maintenance
load errorDelivery notes
Form of delivery
Product generation 2:
Linear Modules with a ball screw drive or belt drive are delivered fully assembled.
Motor attachment - motor:
If a combination of motor mounting and motor has been chosen, the attachment of the components is done as shown in the figure below. When ordering Linear Modules only with a motor mounting (without motor!), not all parts can be mounted. Final assembly must then be carried out by the customer. All necessary instructions and parameters for professional assembly are included.
The installation version is selected and determined during product configuration, and it is a part of the order key.
MKK with flange and coupling (MF01)
MKK with timing belt side drive (RV01 - RV04)
1 Linear module
2 Motor
3 Mount and coupling
4 Timing belt side drive
5 Carriage
6 Motor connector
7 Gearing
Motor connector position
An individually selectable motor connector position is not configurable for product generation 2 linear modules, therefore a standard position is specified upon delivery. For motor connector location, see "Order details" chapter, "Configuration and ordering" document.
Switching system
Cable duct, switch, switching cam and socket with plugs are included as loose parts.
Lubrication
Product generation 2 Linear Modules are delivered with initial greasing.
For information on lubricants, see the "Maintenance" chapter.
Documentation
Each Linear Module is supplied together with the appropriate documentation upon delivery.
Safety Instructions
Required and supplementary documentation
For further instructions and information, please refer to the documentation for this product.
You can find PDF files of these documents on the Internet at www.boschrexroth.com/mediadirectory.
We would also be happy to send you the documents that you want.
If you are unsure about using this product, please contact Bosch Rexroth.
Motor attachment
All dimensions in mm. Drawings not to scale.
Abmessungen
| Version | Motor coding | E | ▢ E | Lf | F | G | H | K | Lsd | ||
| i = 1 | i = 1,5 | i = 2 | |||||||||
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | ||
| RV01 - RV04 | MS2N07-C0BQN | 240 | - | 238 | - | - | 160 | 90 | 140 | 77 | 409 |
| MS2N07-C1BRN | |||||||||||
| MS2N07-D0BRN | |||||||||||
| MS2N07-E0BQN | - | ||||||||||
| MF01 | MS2N07-C0BQN | - | - | - | see dimension ▢ A → "Motors" chapter | 148 | - | - | - | - | - |
| MS2N07-C1BRN | |||||||||||
| MS2N07-D0BRN | |||||||||||
| MS2N07-E0BQN | |||||||||||
Measurement and test reports
load errorDownloads
 | Declaration of Incorporation for single axis Linear Motion Systems Certificate | R320103141 | 2020-06-01 | All languages | PDF | 409k Product Groups: Linear axes and electromechanical cylinders |
| Safety Instructions for Linear Motion Systems Manual | R320103152_en | 2015-01-01 | English | PDF | 593k Product Groups: Linear axes and electromechanical cylinders |
| Linear Modules MKK / MKR / MLR Catalog | R999000496 | 2021-03-01 | English | PDF | 17.5MB Product Groups: Linear Modules |
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