Plain Linear Bearing - FLA64 4.00" Self-Aligning Crowned OD Open Linear Plain Bearing The body is made of

The body is made of anodized aluminum while the 3 roller bearings are made of sealed 52100 chrome steel

Doible Sized Steel Closed Shell with a Round Center Flange

maintenance-free linear motion

Inch Series - Open anodized aluminum shell

Closed plain linear bearing with a JIS 25mm ID

Plain Linear Bearing - FLA64 4.00" Self-Aligning Crowned OD Open Linear Plain Bearing The body is made ofPlain linear bearing, self aligning, closed, with a 4" precision ID that provides a 0. 0005" running clearance per side on matching round shafts. Encased in a crowned OD cylindrical anodized aluminum shell, this bearing can pivot slightly within its housing to accommodate angular misalignment between parallel shafts. It features a bonded Simplicity self lubricating FrelonGOLD bore liner for maintenance free linear, rotational, and oscillating motion