TIMKEN 1988-1931 Bearing

TIMKEN 1988-1931 tapered roller bearings

Also known as : 1988-1931

• Inside Diameter: 28.575 mm
• Outside Diameter: 60.325 mm
• Width: 19.845 mm
• Basic dynamic load rating: 48.4 kN
• Basic static load rating: 50.2 kN

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TIMKEN 1988-1931 Bearing

Series	1900
model	1988-1931
Cone Part Number	1988
Cup Part Number	1931
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.300 Kg 0.60 lb
Dimensions
d - Bore	28.575 mm 1.1250 in
D - Cup Outer Diameter	60.325 mm 2.3750 in
B - Cone Width	19.355 mm 0.7620 in
C - Cup Width	15.875 mm 0.6250 in
T - Bearing Width	19.845 mm 0.7813 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	3.560 mm 0.14 in
r - Cup Backface "To Clear" Radius	1.27 mm 0.050 in
da - Cone Frontface Backing Diameter	33.53 mm 1.32 in
db - Cone Backface Backing Diameter	39.62 mm 1.56 in
Da - Cup Frontface Backing Diameter	55.88 mm 2.20 in
Db - Cup Backface Backing Diameter	52.07 mm 2.05 in
Ab - Cage-Cone Frontface Clearance	2 mm 0.08 in
Aa - Cage-Cone Backface Clearance	0 mm 0 in
a - Effective Center Location	-5.80 mm -0.23 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	12500 N 2820 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	48400 N 10900 lbf
C0 - Static Radial Rating	50200 N 11300 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	7080 N 1590 lbf
Factors
K - Factor	1.77
e - ISO Factor	0.33
Y - ISO Factor	1.82
G1 - Heat Generation Factor (Roller-Raceway)	12.5
G2 - Heat Generation Factor (Rib-Roller End)	6.3
Cg - Geometry Factor	0.0565

TIMKEN 1988-1931 bearings, TS (Tapered Single) Imperial, Tapered roller bearings.