SUPER LINEAR BUSHING KBB-20-D

***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 SUPER LINEAR BUSH KBB-20-D (R067212040) is a high-precision linear motion component designed for smooth and accurate travel along a guiding shaft. This closed-type linear bushing is engineered without a self-alignment feature, which makes it ideal for applications where lower tipping forces are transferred axially. The KBB-20-D features steel bearing plates with meticulously machined ball guide grooves and optimized ball lead-in chamfers, ensuring exceptional travel smoothness and an extended service life. With a shaft diameter of 20mm, the SUPER LINEAR BUSH KBB-20-D incorporates one seal to protect against contaminants while maintaining low frictional drag. The bushing's ball retainer and outer sleeve are constructed from durable PA or POM materials, while the balls themselves are made from high-quality rolling bearing steel. This design allows for high-speed operations—up to 5 meters per second—though it should be noted that at such speeds, the service life may be reduced due to increased wear on plastic parts. The dynamic load capacities of the KBB-20-D suggest robust performance with a total travel range between 100 million and 500 million cycles without failure. It operates efficiently within an ambient temperature range of -30°C to +80°C, demonstrating versatility across various environments. This linear bushing does not require initial lubrication, simplifying installation and maintenance processes. It also features integrated wiper seals that contribute to its low friction coefficient, which ranges from 0.01 under heavy loads to a maximum of 0.25 even under light loads. With its compact weight of just 0.07 kilograms and precise engineering for minimal radial clearance on the shaft bore, the Bosch Rexroth SUPER LINEAR BUSH KBB-20-D offers reliable performance for linear motion applications requiring precision, durability, and efficiency.