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Description
- Extra-reinforced and high-precision drive unit with very small dimensions
- Optimal travel, high load capacities, high precision and rigidity thanks to the integrated Rexroth Ball Rail System
- High positioning accuracy and repeatability thanks to the ball screw assembly with backlash-free nut system
- High movement speed with simultaneously high precision thanks to the ball rail systems, large screw diameters and leads, and double floating bearing system
- Precise alignment and secure mounting of attachments thanks to the thread and pin holes in the carriage
Features
- Repeatability of up to ± 05 mm
- Positioning accuracy of up to ± 0.01 mm
- Guiding accuracy of up to ± 05 mm
- Quick installation and easy alignment of the axes thanks to the machined reference edge on the frame
- Simple motor mounting thanks to the centering recess and fastening thread
- Protection of the installation elements by selectable sheet cover
Product description
Rexroth precision modules are precise, ready-to-install linear systems with high performance features in compact dimensions. Rexroth offers an attractive price/performance ratio and short delivery times.
Attachments
- Motor attachments via mount and coupling or timing belt side drive
- Motor attachment kits according to customer specification
- Maintenance-free servo motors with optional brake and attached feedback
- Adjustable sensors over the entire travel range
- Aluminum mounting duct for sensors
- Various connection accessories
Structural design
PSK without cover
| 1) | 1 standard carriage |
| 2) | 2 standard carriages |
| 3) | 1 long carriage |
| 4) | 2 long carriages |
1 Fixed bearing end block
2 Ball screw with zero-backlash cylindrical single nut
3 One or two steel carriages, standard length or long
4 Floating bearing end block
5 Frame with reference edge and integrated guideway geometry
PSK with sheet cover
| 1) | 1 standard carriage |
| 2) | 2 standard carriages |
| 3) | 1 long carriage |
| 4) | 2 long carriages |
6 Cover plate
7 One or two carriages, standard length or long
8 Carriage plate, aluminum
9 Carriage plate guide unit, steel
PSK with sealing strip
| 1) | 1 standard carriage |
| 2) | 1 long carriage |
10 Cover made of corrosion-resistant steel strip
11 One carriage, standard or long
12 Table top, aluminum
13 Guide unit, aluminum
Additional components for all PSK
14 Switch
15 Mounting duct
16 Switch tab
Technical data
Maximum values for each size
| Size | PSK-040 | PSK-050 | PSK-060 | PSK-090 | |
| C | N | 4980 | 11850 | 14620 | 44670 |
| Cbs | N | 900 | 2200 | 3800 | 12300 |
| Cfb | N | 820 | 1600 | 4000 | 13400 |
| Mt | Nm | 70 | 244 | 341 | 1478 |
| ML 1) | Nm | 14.8 | 356 | 541 | 1557 |
| Lmax | mm | 350 | 600 | 940 | |
| amax | m/s² | 27 | |||
| vmax | m/s | 0.38 | 0.29 | 1.15 | 1.6 |
| 1) | For table parts, the maximum values are variable. |
| For the maximum permissible forces (Fy max, Fz max) and moments (Mx max, My max, Mz max) half of the dynamic characteristic values (C, Mt, ML) apply. | |
| Maximum values depends on the selected configuration. |
Legend
| Symbol | Description | Unit |
| C | Dynamic load capacity, linear guide | N |
| Cbs | Dynamic load capacity, ball screw drive | N |
| Cfb | Dynamic load capacity, fixed bearing | N |
| Mt | Dynamic torsional moment load capacity | Nm |
| ML | Dynamic longitudinal moment load capacity | Nm |
| Lmax | Maximum length | mm |
| amax | Maximum acceleration travel | m/s2 |
| vmax | Maximum permissible speed | m/s |
Mounting
Mounting
Do not secure or support the precision module at the end blocks! The frame is the load-bearing part!
The Precision Modules are mounted with screws via through-holes in the frame.
When mounting the Precision Modules, please note the maximum tightening torques listed in the table.
The reference edge on the frame makes it easier to align the Precision Module.
Remove the cover plate, if present, before mounting. For connection dimensions, see the relevant dimension drawings.
Fastening with screws in the frame
The reference edge on the frame makes it easier to align the precision module.
Suitable for the cover variants:
- without cover
- with sheet cover (remove the cover strip before attaching). The connection dimensions can be found on the respective dimension drawing.
Mounting with clamping fixtures PSK-050 to PSK-090
The reference edge cannot be used in the clamping fixture area.
Suitable for all cover variants.
Fastening with screws in the frame
| 1) | Reference edge |
| 2) | Radius Rmax = 0.2 |
Mounting with clamping fixtures PSK-050 to PSK-090
| Size | A | B |
| (mm) | (mm) | |
| PSK-050 | 60 | 70 |
| PSK-060 | 72 | 85 |
| PSK-090 | 100 | 115 |
Switch mounting arrangements
Switching system overview
1 Sensor
2 Switching cam
3 Fastening duct (aluminum alloy, black anodized)
4 Cylinder screw with washer
| 1) | links (L) |
| 2) | right (R) |
Notes for mounting
The switch mounting is only permitted on one side of the precision module (left or right).
A fastening duct is required for the attaching of the switches. The switches are pushed into the slot on the fastening duct and secured with set screws.
Switch
The switches for the PSK precision modules are magnetic field sensors with fixed potted cable.
Models
- Hall sensor PNP NC contact
- Reed sensor (changeover)
Accessories
Clamping fixtures for Precision Modules
Clamping fixtures for Precision Modules
Switch tab for PSK without and without cover and with sheet cover
Switch tab for PSK without and without cover and with sheet cover
Switch tab for PSK with sheet cover
Switch tab for PSK with sheet cover
Magnetic sensor with free line end
Magnetic sensor with free line end
Mounting duct
Mounting duct
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.
If you are unsure about using this product, please contact Bosch Rexroth.
Ordering codes
Order overview
| Size | Part number | Short product name | CAD data | Buy |
| PSK-040 | R146510000 | PSK-040-NN-1 | ||
| PSK-050 | R146520000 | PSK-050-NN-1 | ||
| PSK-060 | R146530000 | PSK-060-NN-1 | ||
| PSK-090 | R146540000 | PSK-090-NN-1 |
Explanation of short product name
| Precision Module PSK example | PSK-050-NN-1 | |
| System | P = | Precision module |
| Linear guide | S = | Integrated BallRail System |
| Drive | K = | Ball screw assembly |
| Size | 050 = | 040/050/060/090 |
| Version | NN = | Normal version |
| Generation | 1 = | Product generation 1 |
Downloads
 | 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 |
| Precision Modules PSK Manual | R320103187 | 2006-09-01 | English, French, German, Italian | PDF | 5MB Product Groups: Precision Modules R310D42475 |
| Precision Modules PSK Catalog | R999000500 | 2015-11-01 | English | PDF | 6.1MB Product Groups: Precision Modules only available as PDF file |
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