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Description
- With standard seals
- Preload class: C0, C2
- For precision screws PSR in tolerance grade T5, T7, T9 (with backlash only)
Product description
Product overview
Technical data
Operating conditions
| Size | Admissible operating temperature (min ... max) 1) | Admissible storage temperature (min ... max) |
| d0 x P | ||
| 20 x 5R | -10 °C ... +60 °C | -15 °C ... +80 °C |
| 25 x 5R | ||
| 25 x 10R | ||
| 30 x 5R | ||
| 30 x 10R | ||
| 39 x 5R | ||
| 39 x 10R | ||
| 48 x 5R | ||
| 48 x 10R | ||
| 60 x 10R | ||
| 60 x 20R | ||
| 75 x 10R | ||
| 75 x 20R |
| 1) | Standard design PLSAs allow a continuous temperature of 60 °C (measured on the outershell of the nut). |
Technical data for nuts
| Size | C | C0 | vmax | Mass |
| d0 x P | kN | kN | m/min | kg |
| 20 x 5R | 55 1) | 80 1) | 37.5 2) | 0.62 |
| 0.72 | ||||
| 25 x 5R | 65 1) | 122 1) | 30 2) | |
| 25 x 10R | 74 1) | 118 1) | 60 2) | |
| 30 x 5R | 87 1) | 178 1) | 25 2) | 1.25 |
| 30 x 10R | 101 1) | 174 1) | 50 2) | |
| 39 x 5R | 123 1) | 269 1) | 19.2 2) | 2 |
| 39 x 10R | 145 1) | 271 1) | 38.4 2) | |
| 48 x 5R | 188 1) | 481 1) | 15.6 2) | 4.2 |
| 48 x 10R | 220 1) | 475 1) | 31.2 2) | |
| 60 x 10R | 322 1) | 780 1) | 25 2) | 6.82 |
| 60 x 20R | 375 1) | 786 1) | 50 2) | 6.8 |
| 75 x 10R | 480 1) | 1487 1) | 20 2) | 14 |
| 75 x 20R | 544 1) | 1496 1) | 40 2) | 13.7 |
| 1) | The load ratings are valid for tolerance grade T5 only. For other tolerance grades, please take into account the correction factor fac (see general technical notes and information, “Technical Data”, (technical notes). |
| 2) | See “Characteristic speed” (see general technical notes and information, “Technical Data”, (technical notes), and “Critical speed ncr” (see general technical notes and information, “Project planning notes”) |
Legend
| Symbol | Description | Unit |
| d0 | Nominal diameter | mm |
| P | Lead (R = right-hand) | |
| C | Dynamic load capacity | kN |
| C0 | Static load capacity | kN |
| vmax | Maximum speed | m/min |
Technical notes
Dimensions

Dimensions
| Size | B | D1 | L | L5 | L6 | L11 | L12 | S | T1 |
| P9 | g6 | ||||||||
| d0 x P | mm | mm | mm | mm | mm | mm | mm | ||
| 20 x 5R | 4 | 42 | 65 | 34 | 23.5 | 18 mm +0.2 | 5 | 2 | 2.5 mm +0.1 |
| 5 | 45 | 64 | 22 | 20 mm +0.2 | 3 mm +0.1 | ||||
| 25 x 5R | 6 | 53 | 78 | 50 | 26.5 | 25 mm +0.2 | 5 | 3.5 mm +0.1 | |
| 25 x 10R | |||||||||
| 30 x 5R | 64 | 85 | 53 | 32 mm +0.2 | |||||
| 30 x 10R | |||||||||
| 39 x 5R | 8 | 80 | 100 | 64 | 30 | 40 mm +0.2 | 7 | 4 mm +0.1 | |
| 39 x 10R | |||||||||
| 48 x 5R | 100 | 127 | 87 | 41 | 45 mm +0.2 | ||||
| 48 x 10R | |||||||||
| 60 x 10R | 10 | 122 | 152 | 99 | 53.5 | 10.5 | 5 mm +0.1 | ||
| 60 x 20R | |||||||||
| 75 x 10R | 150 | 191 | 129 | 64 | 63 mm +0.2 | ||||
| 75 x 20R |
Legend
| Symbol | Description |
| d0 | Nominal diameter |
| P | Lead (R = right-hand) |
Project planning information
Calculation
Mounting
Installation
Maintenance
Lubrication
Accessories
Threaded Rings GWR

Threaded Rings GWR
- Ball Screw Assemblies BSA
- Planetary Screw Assemblies PLSA
- Smooth functioning due to the principle of internal recirculation
- Especially smooth running due to the optimal pick-up of balls from the raceway
- Adjustable-pre-tensioned single nut
- High load rating due to large number of balls
- Short nut length
- For angular-contact thrust ball bearing LGN
- For cylindrical single nut ZEM-E-S
Certification
Directives and standards
Delivery notes
Delivered only as a complete unit
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.
Notes
Ordering codes
Material numbers
| Size | Part number | Buy |
| d0 x P | ||
| 20 x 5R | R157CA1003 | |
| R157CA1013 | ||
| 25 x 5R | R157C21003 | |
| 25 x 10R | R157C23003 | |
| 30 x 5R | R157C31013 | |
| 30 x 10R | R157C33003 | |
| 39 x 5R | R157C41003 | |
| 39 x 10R | R157C43003 | |
| 48 x 5R | R157C61003 | |
| 48 x 10R | R157C63003 | |
| 60 x 10R | R157C73003 | |
| 60 x 20R | R157C77003 | |
| 75 x 10R | R157C83003 | |
| 75 x 20R | R157C87003 |
Legend
| Symbol | Description |
| d0 | Nominal diameter |
| P | Lead (R = right-hand) |
Ordering data:
| PLSA | 20 x 5R | ZEM-E-S | 00 | 4 | 0 | T7 | R | 822Z150 | 412Z120 | 1250 | 1 | 1 |
For more information on the short product name, see general technical notes and information, “Product description”
Downloads
| Planetary Screw Assemblies Manual | R320103883 | 2011-06-01 | English, French, German, Italian | PDF | 974k Product Groups: Linear Screw Assemblies | |
| Catalog screw assemblies Catalog | R999001185 | 2021-04-01 | English | PDF | 30.7MB Product Groups: Ball Screw Assemblies, Planetary Screw Assemblies Only available as PDF - Ball screw assemblies BASA/Planetary screw assemblies PLSA |



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