Rexroth B.RUNNER BLOCK KWD-025-FKS-C1-N-1 Size 25 Linear Motion Ball Runner with 36mm Height and 170 Dynamic Load Capacity
The Bosch Rexroth B.RUNNER BLOCK SS KWD-025-FKS-C1-N-1 (R166121420) is a high-precision ball runner block engineered for demanding linear motion applications. This self-aligning component automatically compensates for alignment errors, ensuring smooth operation even with mounting inaccuracies or guide rail deflections.
- Self-aligning design compensates for alignment errors up to specified tolerances
- Carbon steel construction for exceptional durability and robustness
- Low preload class C with normal accuracy class N for precise movement
- Extracompact design enables greater parallelism and height offsets
- Optimized return, ball pickup, and entry design for excellent dynamic performance
- Compatible with all SNS ball guide rails across various accuracy classes
- Pre-lubricated with roller bearing grease Dynalub for reduced maintenance
- Straight lube connection for easy maintenance access
| Parameter | Value |
|---|---|
| Brand | Rexroth |
| Model | KWD-025-FKS-C1-N-1 |
| Size S1 (profiled rail systems) | 6.7 |
| Friction coefficient μ | 0.002 ... 0.003 |
| Size B tolerance (profiled rail systems) | +0.5 |
| Pitch T guide rail | 60 |
| Height of runner block with guide rail | 36 |
| Dynamic torsional moment load capacity Mt | 170 |
| Lubrication | With initial lubrication and preservation |
| Ball chain | Without ball chain (standard) |
This runner block is ideal for applications requiring precise linear motion where compensation for misalignments and high load ratings in all four main loading directions are critical. Its quiet and efficient operation makes it suitable for sophisticated linear motion assemblies in industrial automation, machinery, and precision equipment.
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