Overview
The Bosch Rexroth R200181304 Ball Runner Block NRII is a high-precision linear motion component engineered for demanding industrial applications. This size 20 runner block features Resist NRII corrosion-resistant steel construction, making it ideal for environments with high humidity, water-based media exposure, and temperature extremes. The optimized ball raceway geometry ensures smooth, accurate travel with minimal deflection variation across all loading directions.
Key Features
- Corrosion-resistant construction: Ball Runner Block body and all steel parts made of corrosion-resistant steel in accordance with DIN EN 10088, suitable for electroplating, pickling, and wash-down environments
- High-precision accuracy: Patented entry zone increases the travel accuracy up to a factor of six
- Low preload design: Reduces friction while maintaining rigidity for smooth operation
- Long-term lubrication: Long-term lubrication is possible over several years
- Multi-directional load capacity: High load ratings in all four primary directions
- Maintenance-friendly: Lube fittings with metal threads on all sides for easy access and servicing
Technical Specifications
- Size: 20 (FNS format—flange width, normal length, standard height)
- Material: Resist NRII corrosion-resistant steel per DIN EN 10088
- Preload: Low preload (C1)
- Ball arrangement: Without ball chain
- Accuracy class: High precision
- Sealing options: Standard SS seal, low-friction LS seal, double-lip DS seal, and specialty seals available for extreme conditions
- Lube nipple: DIN 3405-A (threaded fitting for centralized lubrication)
- Moisture resistance: Suitable for environments with relative humidity exceeding 70% and temperatures above 30 °C
- Condition: New in Box
Typical Applications
The R200181304 NRII ball runner block is well-suited for:
- Electroplating and chemical processing lines
- Pickling and metal treatment systems
- Pharmaceutical and food-processing machinery
- Wash-down and clean-room assembly stations
- Humid industrial environments requiring high rigidity and accuracy
- Long-stroke linear motion systems demanding precision and durability
Compatibility & Replacements
Compatible With
- Can be used on all SNS ball guide rails
- Rexroth standard ball guide rail systems
- Applications using size 20 FNS ball runner block mounting patterns
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The R200181304 is a standard size 20 FNS Resist NRII ball runner block; ensure your existing guide rail system supports this profile and load rating.
Works With
- Rexroth SNS ball guide rail systems
- Standard FNS mounting bracket configurations
- Centralized lubrication systems with standard DIN 3405 fittings
- Industrial linear motion automation platforms
