Bearing is optimally designed for Electric Motor, Mower Spindle, Snow-Blower, Snow-Thrower, and Cut-off Saws Applications. This Bearing Has Two Rubber Seals (2RS), Connected to the Inner Ring to Protect the Bearing from Dust or any Possible Contamination. Bearing is Pre-Lubricated with High-Quality Grease ideal for use in High and Low-temperature settings (-30C to +180C). If your Application Requires a Ball Bearing with One Seal or Opened Without Seals, you can easily remove one or both Seals. - Specification: Item GX20818, GX21510, JD8535, Inner Diameter 17.00 mm, Outside Diameter 40.00 mm, Width 12.00 mm, Dynamic Load Rating Cr 9950 N, Static Load Rating Cor 4750 N, Limiting Speed 12000 r/min, Clearance Normal, Tolerance Inner Ring 0 to -7 μm, Tolerance Outer Ring 0 to -9 μm, Tolerance Classes P6, Noise and Vibration Z3V3, Closures Two Rubber Seals (2RS), Lubrication Type Grease Chevron, Lubrication Temperature -030°C to +180°C, Rolling Element Indicator Ball, Material Gcr15, Product Weight 0.067 KG. - Application: Compatible with/Replacement for John Deere LX172, LX173, LX176, LX178, LX186, LX188, GT242,GT262, GT275 and Ztrak