TIMKEN 39250 - 39412-B | Tapered Roller Bearings - TSF

TIMKEN Bearing 39250 - 39412-B

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.

Material: Bearing steels

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Specifications Product Description Literature & catalogs Videos Substitute products You may also like

Specifications of TIMKEN Bearing 39250 - 39412-B

Specifications

Series	39000
Cone Part Number	39250
Cup Part Number	39412-B
Design Unit	Inch
Bearing Weight	1.6 lb0.70 Kg
Cage Material	Stamped Steel

Dimensions

d – Bore	2.5 in63.5 mm
D – Cup Outer Diameter	4.125 in104.775 mm
D1 – Flange Outer Diameter	4.3084 in109.433 mm
B – Cone Width	0.8661 in21.999 mm
C – Cup Width	0.6250 in15.875 mm
C1 – Cup Flange Width	0.1875 in4.763 mm
T1 – Bearing Width to Flange	0.4063 in10.320 mm

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius¹	0.08 in2 mm
r – Cup Backface “To Clear” Radius²	0.08 in2 mm
da – Cone Frontface Backing Diameter	2.76 in70 mm
db – Cone Backface Backing Diameter	2.87 in73 mm
Da – Cup Frontface Backing Diameter	4.06 in102.11 mm
Ab – Cage-Cone Frontface Clearance	0.12 in3 mm
Aa – Cage-Cone Backface Clearance	0.05 in1.3 mm
a – Effective Center Location³	-0.06 in-1.5 mm

Basic Load Ratings

C90 – Dynamic Radial Rating (90 million revolutions)⁴	6680 lbf29700 N
C1 – Dynamic Radial Rating (1 million revolutions)⁵	25800 lbf115000 N
C0 – Static Radial Rating	27000 lbf120000 N
C_a90 – Dynamic Thrust Rating (90 million revolutions)⁶	4440 lbf19700 N

Factors

K – Factor⁷	1.51
e – ISO Factor⁸	0.39
Y – ISO Factor⁹	1.55
G1 – Heat Generation Factor (Roller-Raceway)	51.7
G2 – Heat Generation Factor (Rib-Roller End)	19.5
Cg – Geometry Factor¹⁰	0.0947

Literature & catalogs

TIMKEN -LUBRICATION

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TIMKEN -TYPE- TDI

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TIMKEN-TAPERED ROLLER BEARING CAGES

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TIMKEN-TYPE- TS

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Videos

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Timken Tricks of the Trade – Installing a Timken® Set Right® Bearing

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Timken Tricks of the Trade Wheel End Bearing Removal Tips

TIMKEN Bearing 39250 - 39412-B