TIMKEN 3780-3720-B Bearing

TIMKEN 3780-3720-B tapered bearings with Flange

Also known as : 3780-3720-B

• Inside Diameter: 50.8 mm
• Outside Diameter: 93.264 mm
• Width: 11.113 mm
• Basic dynamic load rating: 122 kN
• Basic static load rating: 153 kN

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TIMKEN 3780-3720-B Bearing

Series	3700
model	3780-3720-B
Cone Part Number	3780
Cup Part Number	3720-B
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.900 Kg 1.90 lb
Dimensions
d - Bore	50.8 mm 2 in
D - Cup Outer Diameter	93.264 mm 3.6718 in
D1 - Flange Outer Diameter	97.937 mm 3.8558 in
B - Cone Width	30.302 mm 1.1930 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	57.90 mm 2.28 in
db - Cone Backface Backing Diameter	64 mm 2.52 in
Da - Cup Frontface Backing Diameter	89.92 mm 3.56 in
Ab - Cage-Cone Frontface Clearance	1.5 mm 0.06 in
Aa - Cage-Cone Backface Clearance	1.5 mm 0.06 in
a - Effective Center Location	-8.1 mm -0.32 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	31700 N 7120 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	122000 N 27500 lbf
C0 - Static Radial Rating	153000 N 34300 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	18300 N 4120 lbf
Factors
K - Factor	1.73
e - ISO Factor	0.34
Y - ISO Factor	1.77
G1 - Heat Generation Factor (Roller-Raceway)	49.9
G2 - Heat Generation Factor (Rib-Roller End)	14.5
Cg - Geometry Factor	0.0903

As TIMKEN bearing distributor, Nodes bearings have TIMKEN 3780-3720-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.