TIMKEN 3981-3920-B Bearing

TIMKEN 3981-3920-B tapered bearings with Flange

Also known as : 3981-3920-B

  • Inside Diameter: 58.738 mm
  • Outside Diameter: 112.713 mm
  • Width: 11.113 mm
  • Basic dynamic load rating: 139 kN
  • Basic static load rating: 191 kN

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TIMKEN 3981-3920-B Bearing

TIMKEN 3981-3920-B Bearing details

Series 3900
model 3981-3920-B
Cone Part Number 3981
Cup Part Number 3920-B
Design Units Imperial
Cage Type Stamped Steel
Bearing Weight 1.400 Kg
3.00 lb
Dimensions
d - Bore 58.738 mm
2.3125 in
D - Cup Outer Diameter 112.713 mm
4.4375 in
D1 - Flange Outer Diameter 117.373 mm
4.6210 in
B - Cone Width 30.048 mm
1.1830 in
C - Cup Width 23.813 mm
0.9375 in
C1 - Cup Flange Width 4.763 mm
0.1875 in
T - Bearing Width to Flange 11.113 mm
0.4375 in
T1 - Bearing Width 30.163 mm
1.1875 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius 3.600 mm
0.14 in
r - Cup Backface "To Clear" Radius 3.30 mm
0.130 in
da - Cone Frontface Backing Diameter 67.10 mm
2.64 in
db - Cone Backface Backing Diameter 72.90 mm
2.87 in
Da - Cup Frontface Backing Diameter 108.97 mm
4.29 in
Ab - Cage-Cone Frontface Clearance 2 mm
0.08 in
Aa - Cage-Cone Backface Clearance 1.5 mm
0.06 in
a - Effective Center Location -4.6 mm
-0.18 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions) 36000 N
8090 lbf
C1 - Dynamic Radial Rating (1 million revolutions) 139000 N
31200 lbf
C0 - Static Radial Rating 191000 N
43000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions) 24800 N
5570 lbf
Factors
K - Factor 1.45
e - ISO Factor 0.40
Y - ISO Factor 1.49
G1 - Heat Generation Factor (Roller-Raceway) 75.2
G2 - Heat Generation Factor (Rib-Roller End) 21.3
Cg - Geometry Factor 0.109

As TIMKEN bearing distributor, Nodes bearings have TIMKEN 3981-3920-B bearings in stock, TSF (Tapered Single with Flange) Imperial , Tapered roller bearings.

Like the TS bearing design, the TSF design consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft. TSF bearings have flanged cups to facilitate axial location and accurately align seals in through-bored housings.