REXROTH KWD-025-FNS-C0-H-2 R200129335

Rexroth Ball Runner Block Size 25

Description

This Bosch Rexroth Ball Runner Block, model KWD-025-FNS-CO-H-2 with material number R200129335, is a high-performance component for linear guide systems. It is designed to provide smooth, precise, and low-friction movement in a wide range of industrial automation and machinery applications. Its robust construction ensures long service life and high reliability under heavy loads.

Specifications

• Manufacturer: Rexroth (Bosch Group)
• Type: Ball Runner Block
• Format: FNS (Flanged, Normal length, Standard height)
• Size: 25
• Preload Class: C0 (No preload)
• Accuracy Class: H (High)
• Seals: Standard seals on both sides

Label Info

• MNR: R200129335
• Model: KWD-025-FNS-CO-H-2

Application

Ideal for use in machine tools, robotics, packaging machinery, and other automation systems where precise linear motion is critical.

Country of Origin

Made in Romania.

CO2 Impact

By purchasing this reused component, you are contributing to a circular economy and helping to avoid approximately 0.9 kg of CO2 emissions associated with the production of a new part.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the recommended lubrication procedure for the KWD-025-FNS-CO-H-2 runner block?

Rexroth recommends using a lithium-based grease of consistency class NLGI 2, such as Dynalub 510 or equivalent. Lubrication should be applied via the grease nipples on the block, with intervals depending on the application’s load, speed, and environmental conditions.

Can this C0 preload class runner block be used on a single rail application, or is it better suited for paired rails?

A C0 (no preload) runner block can be used in single rail applications, especially where high rigidity is not the primary concern. However, for applications requiring higher moment rigidity and accuracy, using two parallel rails with preloaded blocks (e.g., class C1 or higher) is recommended.

How does the ‘H’ accuracy class of this runner block affect its performance in high-precision positioning applications?

The ‘H’ (High) accuracy class provides tight tolerances on the parallelism between the mounting surfaces and the direction of motion. This results in superior travel accuracy and repeatability, making it well-suited for applications like precision assembly, measurement equipment, and machine tools.

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Last Update: Friday, March 13, 2026