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Description
Product description
Product overview
Technical data
Technical notes
Fields of application
End bearings for screw ends in Forms 931, 93, 93A, 941, 94, 94A
| Pillow Block Unit SEB-F assembly | ||
 | ||
| Application | Bearing assembly LAF | Bearing assembly LAN |
 |  Shown with slotted nut NMA |  Shown with slotted nut NMZ |
Components
End bearings for screw ends
| Form | Version 1) | Size | Pillow block unit assembly | Bearing assembly | ||
| SEB-F | LAF | LAN | ||||
| d0 | P | Part number | Part number | Part number | ||
| 941 | 120 | 12 | 2/5/10 | R159111220 | - | R159011200 |
| 170 | 16 | 5/10/16 | R159111730 | R159001730 | R159011730 | |
| 94/94A | 200 | 20 | 5/10/20 | R159112030 | R159002030 | R159012030 |
| 250 | 25 | 5/10/25 | - | - | - | |
| 300 | 32 | 5/10/20/32 | R159113030 | R159003030 | R159013030 | |
| 400 | 40 | 5/10/12/16/20 | R159114030 | R159004030 | R159014030 | |
| 500 | 50 | 10/12/20 | R159115030 | R159005030 | R159015030 | |
| 1) | The allocation of screw ends to the bearing assemblies is clearly defined by the version. |
Legend
| Symbol | Description |
| d0 | Nominal diameter |
| P | Lead |
Slotted nuts NMA for fixed bearings
Slotted nuts NMA for fixed bearings
- For maximum vibratory loads
- For new designs
Slotted nuts NMZ for fixed bearings
Slotted nuts NMZ for fixed bearings
- For existing designs
- For timing belt side drive
- For driven nuts
Dimensions
| 1) | Undercut form E DIN 509 |
| 2) | Thread undercut 76 short |
Dimensions and technical data
| Form | Version 1) | Rexroth Ball Screw Assembly size | Dimensions | Keyway as per DIN 6885 | Wrench size | |||||||||||||||||
| d0 | P | Ljf | D1 | L1 | D2 | L2 | D3 | L3 | G1 | LG1 | DR | LR | DF | LF max | b | l | t | SW | bsw | lsw | ||
| h11 | h7 | h7 | P9 | |||||||||||||||||||
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |||||
| 941 | 120 | 12 | 2/5/10 | 75 | 12 | 23 | 10 | 25 | 6 | 15 | M12x1 | 12 | 16 | 15 | 8 | 1 | 3 | 20 | 1.8 | - | - | - |
| 170 | 16 | 5/10/16 | 90 | 17 | 15 | 30 | M17x1 | 22 | 23 | 17 | 12 | 5 | 25 | 3 | ||||||||
| 94/94A | 200 | 20 | 5/10/20 | 103 | 20 | 26 | 18 | 40 | M20x1 | 25 | 15 | 16.5 | 8 | 6 | 28 | 3.5 | 15 | 10 | 8.5 | |||
| 250 | 25 | 5/10/25 | 117 | 25 | 22 | 50 | M25x1,5 | 26 | 32 | 21 | 36 | 19 | 10.5 | |||||||||
| 300 | 32 | 5/10/20/32 | 116 | 30 | 25 | 25 | M30x1,5 | 40 | 20 | 28 | 8 | 4 | 24 | 15 | ||||||||
| 400 | 40 | 5/10/12/16/20 | 147 | 40 | 44 | 36 | 60 | M40x1,5 | 28 | 50 | 33.5 | 10 | 40 | 5 | 30 | 12.5 | ||||||
| 500 | 50 | 10/12/20 | 169 | 50 | 52 | 40 | 70 | M50x1,5 | 32 | 60 | 43.5 | 12 | 50 | 41 | 22 | 15.5 | ||||||
| 1) | The allocation of screw ends to the bearing assemblies is clearly defined by the version. |
Legend
| Symbol | Description |
| d0 | Nominal diameter |
| P | Lead |
Project planning information
Separate technical size selection of the permissible drive torque is essential in all cases.
Calculation
Mounting
Design notes, installation
Accessories
Assembly tool for slotted nut
Assembly tool for slotted nut
- General-purpose socket wrench insert for slotted nuts NMA / NMZ
- Available on request
Certification
Directives and standards
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
Ordering data:
| BASA | 20x5R x 3 | SEM-E-S - 4 | 00 | 1 | 2 | T7 | R | 94K200 | 41Z120 | 1250 | 0 | 1 |
For more information on the short product name, see general technical notes and information, “Product description”
Inquiries and orders
Downloads
 | Ball Screw Assemblies Manual | R320103992 | 2011-06-01 | English, French, German, Italian | PDF | 2MB Product Groups: Linear Screw Assemblies |
| Ball Screw Assemblies Manual | R320103993 | 2011-06-01 | English, German, Spanish, Portuguese | PDF | 2MB Product Groups: Linear Screw Assemblies only PDF |
| 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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