Material: self-lubricationg sliding material is polyacetal with a specific polyethylene.The linear slide bearings should be specifically chosen if, due to unusual operating conditions, linear bearings cannot be used.These self-holding linear slide bearings feature the same mounting and securing options as the linear bearings of the ISO Series 1 and can be fitted in the same housings. Tolerances: Mounting hole H6, shaft h6. Temperature range: -40°C to +80°C.* Nominal size for the mounting hole. The bearing is made with oversize for press fit, 0.1 to 0.3 mm, depending on the size.