BALL RUNNER BLOCK RESIST NRII KWD-020-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-020-FNS-C1-N-0 (R200181407) is a highly precise and corrosion-resistant ball runner block designed for linear motion systems. This model is part of Bosch Rexroth's Ball Rail Systems and is notable for its Resist NRII material, which provides exceptional durability in harsh environments, including exposure to water-based media, acidic materials, alkali or saline solutions, and high relative humidity. The runner block features size 20 with a flange width (FNS format), standard length and height, and is made of corrosion-resistant steel in accordance with DIN EN standards. It offers low preload (Preload class C) and standard accuracy (Accuracy class N), ensuring smooth motion with minimal friction due to its four rows of balls design that allows point contact in all loading directions. The block comes equipped with a ball chain to facilitate quiet operation and optimal travel behavior. This model does not include initial lubrication or preservation, allowing users the flexibility to apply their preferred lubrication system. It also lacks attachment elements on both the left front reference edge and right front reference edge but includes straight lube connections loosely attached for maintenance convenience. Designed for use across various applications where high rigidity is required, the B.RUNN. BLOCK NRII can sustain long-term lubrication over several years while maintaining maximum precision. It's compatible with all SNS Ball Guide Rails from Bosch Rexroth and can be interchanged with guide rails of every accuracy level. The product's optimized entry-zone geometry coupled with a high number of balls significantly reduces variation in elastic deflection, contributing to its excellent dynamic characteristics. Suitable seals like the standard seal SS, low-friction seal LS, double-lip seal DS, front seal, FKM seal, and cover plate wiper can be added as accessories for protection against contaminants such as dirt or metal particles—extending the product's service life even in challenging operating conditions.