BOSCH Rexroth R165171320 Runner Block (Ball Runner Block)

Description

The R165171320 BOSCH Rexroth runner block, also designated KWD-030-FNS-C1-H-1, is a high-precision ball runner block engineered for demanding linear motion systems. It is built on a robust carbon steel body with a flanged construction (FNS), offering both structural rigidity and ease of mounting in industrial applications.

This runner block features preload class C1 (moderate preload) that balances freedom of motion with stability, and accuracy class H for reliable positional repeatability. The block comes pre-lubricated with factory grease and includes porting for additional maintenance. Standard sealing (SS) protects the internal ball path from contaminants and debris, enhancing longevity.

In operation, the R165171320 excels in reducing frictional oscillations under external load due to its refined internal geometry — resulting in smoother motion profiles and reduced wear. Its dynamic load capacity and flare for rigidity make it ideal for one-block-per-rail designs in selected cases.

Use cases span automation, CNC machinery, robotics, material handling, and precision transport systems — wherever linear guide movement must be reliable under load. Its compatibility with Bosch Rexroth profile rails ensures integration into existing linear motion systems without redesign.

Applications

• Linear guide systems in automation and robotics

• CNC machines and precision machining centers

• Pick-and-place and material handling gantries

• Linear motion axes in industrial assembly lines

• Positioning tables, optical benches, and instrumentation

• Structure frames requiring high rigidity and low friction motion

Technical Specifications

H2 - Advantages

• ⚙️ High precision motion — optimized ball path geometry for smooth travel

• 🛡️ Contamination protection — standard sealing reduces ingress of particles

• 🔧 Pre-lubricated & maintainable — factory fill with serviceable ports

• 🏗 Robust flanged mounting — simplifies structural integration into frames

• 📏 Compact yet rigid — flanged block offers rigidity with minimal footprint

• 🌐 Interchangeable in Rexroth systems — drops into many Bosch linear setups

FAQ

Q1: What does “KWD-030-FNS-C1-H-1” mean?
This code denotes a flanged runner block (FNS), size series 30, preload class C1, accuracy class H, version 1.

Q2: Is the block ready to use on delivery?
Yes — the block is factory-lubricated with grease and comes sealed for immediate integration.

Q3: Can I relubricate it in operation?
Yes — the block includes porting to allow injection of additional lubricant during maintenance.

Q4: Is it compatible with other brands’ linear rails?
It is optimized for Bosch Rexroth rails, but compatibility may exist when dimensions align.

Q5: What environments is it intended for?
Ideal for industrial, automated, and high-duty-cycle environments requiring reliable linear motion.