Timken 387-S – Steel Tapered Bearing w/ Micro Blue Coating – Outer Rear
Timken 387-S – Steel Tapered Bearing w/ Micro Blue Coating – Outer Rear This is a tapered bearing commonly used in the NASCAR hubs. We have a large lot along with the tapered bearings, races, and more. These come REM finished with a Micro Blue coating to reduce friction. Use: • Tapered Bearing – NASCAR Speedway – REAR – 5×5 – Outer Rear Specifications Series 385 Cone Part Number 387-S Design Units Imperial Cage Type Stamped Steel C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)1 42200 lbf188000 N C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)2 10900 lbf48700 N Dimensions d – Cone Bore 2 1/4 in57.150 mm B – Cone Width 0.8640 in21.946 mm Abutment and Fillet Dimensions R – Cone Backface “To Clear” Radius3 0.03 in0.800 mm da – Cone Frontface Backing Diameter 2.48 in63 mm db – Cone Backface Backing Diameter 2.52 in64 mm Ab – Cage-Cone Frontface Clearance 0.11 in2.8 mm Aa – Cage-Cone Backface Clearance 0.03 in0.8 mm a – Effective Center Location4 -0.12 in-3 mm Basic Load Ratings C90 – Dynamic Radial Rating (90 million revolutions)5 6280 lbf28000 N C1 – Dynamic Radial Rating (1 million revolutions)6 24200 lbf108000 N C0 – Static Radial Rating 24100 lbf107000 N Ca90 – Dynamic Thrust Rating (90 million revolutions)7 3810 lbf16900 N Factors K – Factor8 1.65 G1 – Heat Generation Factor (Roller-Raceway) 42 G2 – Heat Generation Factor (Rib-Roller End) 15.7 Cg – Geometry Factor9 0.0859