BALL RUNNER BLOCK RESIST NRII KWD-025-FNS-C1-N-0

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth B.RUNN. BLOCK NRII KWD-025-FNS-C1-N-0 (R200121406) is a ball runner block designed for high rigidity requirements and maximum precision in linear motion applications. This component is part of the Ball Rail Systems and features a Resist NRII construction, which is highly corrosion-resistant and suitable for use in harsh environments such as those with water-based media, diluted acids, alkali or saline solutions, high humidity, or temperatures above 100°C. The runner block body, as well as all steel components, are made of corrosion-resistant steel according to DIN EN standards. With its size 25 profile and FNS format (width flange, normal length, standard height), this runner block offers a low preload class C and standard accuracy class N. It comes equipped with a ball chain that ensures low noise levels and smooth travel behavior. The product does not include initial lubrication or preservation and is designed without attachment elements on the left or right front reference edges. The Bosch Rexroth B.RUNN. BLOCK NRII KWD-025-FNS-C1-N-0 boasts an optimized entry zone geometry that increases travel accuracy by up to six times compared to other systems. It can be used with all SNS ball guide rails available in five common sizes. The dynamic characteristics of this product are enhanced due to the minimum quantity lubrication system with an integrated oil reservoir and the high number of balls that minimize variation in elastic deflection. This ball runner block has an overall length of 63 mm and offers excellent load ratings in all four main loading directions. Its design incorporates lube fittings with metal threads on all sides for long-term lubrication over several years. The permissible ambient temperature range for this product is from -10°C to +100°C (admissible for short time). For operations at negative temperatures or extreme environments, consultation with the manufacturer is recommended.