LM76 has expanded its popular “Black Racer” family of ceramic-coated linear bearings. The new series, Linear/Rotary Thin Wall Bushings, features the same high speed, high load, high acceleration, low friction characteristics of the standard “Black Racer,” ceramic coated linear bearings. This new series of thin wall bushings is designed to replace a variety of thin wall bearings used in linear, rotary, and oscillatory applications. Used in place of sintered or cast bronze, various non-metallic materials, and needle bearings, they can enhance performance and dramatically reduce downtime. Each ceramic coated Linear/Rotary Thin Wall Bushing has internal and external grease groves for simplified lubrication.

Standard tolerances for all “Black Racer” Thin Wall Bushings are ID and OD – .252 ID to 1.752 ID +.000/-.001 and 2.003 ID to 3.003 ID +.000/-.002, Concentricity – Up to and including 1.252 ID .0005 TIR and 1.502 to 2.002 ID .001 TIR.

The LS series of straight bushings are available in 31 different combinations of ID and OD combinations and 8 are specifically designed as die and mold replacement bushings. The LF series are flanged bushings available in 22 combinations of IDs and ODs with 9 specifically designed as die and mold replacement bushings.

All “Black Racer” Ceramic Coated Linear Bearings feature a .001 in. penetration of ceramic into the aluminum substrate and a .001-in. surface build-up for a total of .002-in. of ceramic. The file hard RC 89 ceramic shell over an aluminum substrate has a coefficient of friction of .04 to .08 (1/3 the coefficient of friction of polymer bearings), withstands up to 5000 PSI, 40,000 PV, and unlimited SFM! Additionally, these bearings have a typical life expectancy of 100 million linear feet. Shafting options include RC60 steel shafting and other shafting options available from LM76.