Timken 3978 - 3920 bearing

 

Series: 3900                Cone Part Number: 3978                Cup Part Number: 3920                Cage Type: Stamped Steel                C90 - Dynamic Radial Rating (90 million revolutions)1: 8090 lbf      36000 N                r - Cup Backface "To Clear" Radius2: 0.130 in      3.30 mm                Design Units: Imperial                R - Cone Backface "To Clear" Radius1: 0.060 in      1.520 mm                C - Cup Width: 0.9375 in      23.813 mm                Y - ISO Factor3: 1.49                Da - Cup Frontface Backing Diameter: 4.18 in      106.17 mm                Z - Number of Rollers Per Row: 22                db - Cone Backface Backing Diameter: 2.76 in      70.10 mm                Ab - Cage-Cone Frontface Clearance: 0.04 in      1.02 mm                Ca90 - Dynamic Thrust Rating (90 million revolutions)3: 5570 lbf      24800 N                Bearing Weight: 2.9000 lb      1.3000 Kg                C1 - Dynamic Radial Rating (1 million revolutions)2: 31200 lbf      139000 N                e - ISO Factor2: 0.4                G2 - Heat Generation Factor (Rib-Roller End): 21.3                C0 - Static Radial Rating: 43000 lbf      191000 N                D - Cup Outer Diameter: 4.4375 in      112.713 mm                Db - Cup Backface Backing Diameter: 3.90 in      99.06 mm                d - Cone Bore: 2.3437 in      59.530 mm                a - Effective Center Location3: -0.18 in      -4.60 mm                T - Bearing Width: 1.1875 in      30.163 mm                da - Cone Frontface Backing Diameter: 2.68 in      68.07 mm                Cg - Geometry Factor: 0.109                Aa - Cage-Cone Backface Clearance: 0.09 in      2.29 mm                G1 - Heat Generation Factor (Roller-Raceway): 75.2                K - Factor1: 1.45                B - Cone Width: 1.1830 in      30.048 mm                Type:

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We provid brand: NSK INA IKO KOYO ZWZ LYC C&U HRB TMB TWB

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