Application Story – Black Racer Linear Bearings

Black Racer holds the highest acceleration and system speeds we know of for a linear sleeve-type, ball or roller bearing.“Velociatem et Potentia” SPEED & POWER. That says it all.

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LM76’s high speed, “Black Racer,” ceramic coated linear bearings out perform linear ball bushing and linear polymer bearings in high speed and high acceleration/deceleration applications. These drop in replacement linear bearings are designed to be used in standard open and closed pillow blocks. “Black Racer” linear bearings are ideal for: Rocket sleds, crash test systems, and other high speed, high acceleration application.

Open and closed ceramic bearings are available in 12 inch sizes (0.250 in. to 4.000 in.) and 11 metric sizes (5 mm to 80 mm), and in LM76’s self aligning configuration, as well as their Lube/Plus DesignTM which incorporates an internal felt wiper to extend lubrication capabilities. A 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 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.

Motion Control Application  Mattress Stitching

Black Racer Linear Bearings

Founded in 1976, LM76 has been a leading designer/manufacturer of linear bearings, slides and linear motion systems. LM76 is renowned for its industry leading Minuteman TeflonĀ® Composite linear bearings. LM76 is a leading supplier of precision linear shafting: RC60, 300 Series Stainless Steel, and ceramic-coated aluminum shafting. LM76 also offers several FDA/USDA compliant linear bearings and slides for the food processing, pharmaceutical, medical, and packaging industries.

For additional information on any of LM76’s tandard or custom engineered components contact Mike Quinn at: LM76, 140 Industrial Dr., E. Longmeadow, MA 01028; Telephone: 413-525-4166, Fax: 413-525-3735 or E-Mail: or visit the website at

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