TIMKEN 12175 - 12303-B | Tapered Roller Bearings - TSF

TIMKEN Bearing 12175 - 12303-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 12175 - 12303-B

Specifications

Series	12000
Cone Part Number	12175
Cup Part Number	12303-B
Design Unit	Inch
Bearing Weight	2.50 lb1.1 Kg
Cage Material	Stamped Steel

Dimensions

d – Bore	1 3/4 in44.450 mm
D – Cup Outer Diameter	3.0312 in76.992 mm
D1 – Flange Outer Diameter	3.1718 in80.564 mm
B – Cone Width	0.6750 in17.145 mm
C – Cup Width	0.4688 in11.908 mm
C1 – Cup Flange Width	0.1406 in3.571 mm
T1 – Bearing Width to Flange	0.3593 in9.126 mm

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius¹	0.06 in1.5 mm
r – Cup Backface “To Clear” Radius²	0.06 in1.5 mm
da – Cone Frontface Backing Diameter	1.95 in49.5 mm
db – Cone Backface Backing Diameter	2.05 in52 mm
Da – Cup Frontface Backing Diameter	2.99 in74.93 mm
Ab – Cage-Cone Frontface Clearance	0.11 in2.8 mm
Aa – Cage-Cone Backface Clearance	0.04 in1 mm
a – Effective Center Location³	0 in0 mm

Basic Load Ratings

C90 – Dynamic Radial Rating (90 million revolutions)⁴	2890 lbf12800 N
C1 – Dynamic Radial Rating (1 million revolutions)⁵	11100 lbf49500 N
C0 – Static Radial Rating	13100 lbf58100 N
C_a90 – Dynamic Thrust Rating (90 million revolutions)⁶	2500 lbf11100 N

Factors

K – Factor⁷	1.15
e – ISO Factor⁸	0.51
Y – ISO Factor⁹	1.19
G1 – Heat Generation Factor (Roller-Raceway)	21
G2 – Heat Generation Factor (Rib-Roller End)	15.8
Cg – Geometry Factor¹⁰	0.0766

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 12175 - 12303-B