Date: 2016-08-22

Timken 27880 - 27820 bearing stock, Dimensions, Drawing

Series  27800 Cone Part Number  27880 Cup Part Number  27820 Design Units  Imperial Bearing Weight  1.2000 lb 0.6000 Kg Cage Type  Stamped Steel D - Cup Outer Diameter  3.1510 in 80.035 mm d - Cone Bore  1.5000 in 38.100 mm B - Cone Width  0.9330 in 23.698 mm C - Cup Width  0.7288 in 18.512 mm T - Bearing Width  0.9688 in 24.608 mm Z - Number of Rollers Per Row  18 R - Cone Backface "To Clear" Radius1  0.030 in 0.760 mm r - Cup Backface "To Clear" Radius2  0.060 in 1.52 mm da - Cone Frontface Backing Diameter  1.85 in 46.99 mm db - Cone Backface Backing Diameter  1.89 in 48.01 mm Da - Cup Frontface Backing Diameter  2.99 in 75.90 mm Db - Cup Backface Backing Diameter  2.68 in 68.07 mm Ab - Cage-Cone Frontface Clearance  0.06 in 1.52 mm Aa - Cage-Cone Backface Clearance  0.13 in 3.30 mm a - Effective Center Location3  -0.10 in -2.50 mm C90 - Dynamic Radial Rating (90 million revolutions)1  4550 lbf 20200 N C1 - Dynamic Radial Rating (1 million revolutions)2  17500 lbf 78000 N C0 - Static Radial Rating  20500 lbf 91100 N Ca90 - Dynamic Thrust Rating (90 million revolutions)3  4370 lbf 19400 N K - Factor1  1.04 e - ISO Factor2  0.56 Y - ISO Factor3  1.07 G1 - Heat Generation Factor (Roller-Raceway)  24.6 G2 - Heat Generation Factor (Rib-Roller End)  12.6 Cg - Geometry Factor  0.0839

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