TIMKEN 1985-1931-B Bearing

TIMKEN 1985-1931-B tapered bearings with Flange

Also known as : 1985-1931-B

• Inside Diameter: 28.575 mm
• Outside Diameter: 60.325 mm
• Width: 7.938 mm
• Basic dynamic load rating: 48.4 kN
• Basic static load rating: 50.2 kN

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TIMKEN 1985-1931-B Bearing

Series	1900
model	1985-1931-B
Cone Part Number	1985
Cup Part Number	1931-B
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.200 Kg 0.50 lb
Dimensions
d - Bore	28.575 mm 1.1250 in
D - Cup Outer Diameter	60.325 mm 2.3750 in
D1 - Flange Outer Diameter	64.186 mm 2.5270 in
B - Cone Width	19.355 mm 0.7620 in
C - Cup Width	15.875 mm 0.6250 in
C1 - Cup Flange Width	3.967 mm 0.1562 in
T - Bearing Width to Flange	7.938 mm 0.3125 in
T1 - Bearing Width	19.845 mm 0.7813 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	0.800 mm 0.03 in
r - Cup Backface "To Clear" Radius	0.80 mm 0.030 in
da - Cone Frontface Backing Diameter	33.5 mm 1.32 in
db - Cone Backface Backing Diameter	34 mm 1.34 in
Da - Cup Frontface Backing Diameter	57.40 mm 2.26 in
Ab - Cage-Cone Frontface Clearance	2 mm 0.08 in
Aa - Cage-Cone Backface Clearance	0 mm 0 in
a - Effective Center Location	-5.8 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)	6.33
Cg - Geometry Factor	0.0565

As TIMKEN bearing distributor, Nodes bearings have TIMKEN 1985-1931-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.