Series HM720200 Cone Part Number JHM720249 Cup Part Number JHM720210 Design Unit Metric Cage Material Stamped Steel Full Timken Part Number HM720200 Dimensions d - Bore 100 mm 3.9370 in D - Cup Outer Diameter 160 mm 6.2992 in B - Cone Width 40.000 mm 1.5748 in C - Cup Width 32.000 mm 1.2598 in T - Bearing Width 41.000 mm 1.6142 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 3.050 mm 0.12 in r - Cup Backface "To Clear" Radius2 2.54 mm 0.1 in da - Cone Frontface Backing Diameter 109.4 mm 4.3 in db - Cone Backface Backing Diameter 117.0 mm 4.61 in Da - Cup Frontface Backing Diameter 154.43 mm 6.08 in Db - Cup Backface Backing Diameter 143.00 mm 5.63 in Ab - Cage-Cone Frontface Clearance 4.3 mm 0.17 in Aa - Cage-Cone Backface Clearance 2.8 mm 0.11 in a - Effective Center Location3 -2.5 mm -0.1 in Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)4 85800 N 19300 lbf C1 - Dynamic Radial Rating (1 million revolutions)5 331000 N 74400 lbf C0 - Static Radial Rating 416000 N 93500 lbf Ca90 - Dynamic Thrust Rating (90 million revolutions)6 69100 N 15500 lbf Factors K - Factor7 1.24 e - ISO Factor8 0.47 Y - ISO Factor9 1.28 G1 - Heat Generation Factor (Roller-Raceway) 187.7 G2 - Heat Generation Factor (Rib-Roller End) 45.3 Cg - Geometry Factor10 0.107