759/752 Timken Tapered Roller Bearing Cone&Cup Timken 759 - 752 USA 3-1/2 in ID

This is the most basic and most widely used type of tapered roller bearing. It 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.
Unit of Measure 

Specifications

Series

755

Cone Part Number

759

Cup Part Number

752

Design Unit

Inch

Cage Material

Stamped Steel

Related Assembly Number(s)

759-90032759-90033

Dimensions

d - Bore

3 1/2 in88.900 mm

D - Cup Outer Diameter

6-3/8 in161.925 mm

B - Cone Width

1.9000 in48.260 mm

C - Cup Width

1.5000 in38.100 mm

T - Bearing Width

1.8750 in47.625 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius10.14 in3.600 mm
r - Cup Backface "To Clear" Radius20.130 in3.30 mm

da - Cone Frontface Backing Diameter

3.98 in101 mm

db - Cone Backface Backing Diameter

4.25 in108 mm

Da - Cup Frontface Backing Diameter

5.94 in150.88 mm

Db - Cup Backface Backing Diameter

5.67 in144.02 mm

Ab - Cage-Cone Frontface Clearance

0.07 in1.8 mm

Aa - Cage-Cone Backface Clearance

0.11 in2.8 mm
a - Effective Center Location3-0.47 in-11.9 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)419100 lbf84800 N
C1 - Dynamic Radial Rating (1 million revolutions)573600 lbf327000 N

C0 - Static Radial Rating

99200 lbf441000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)611100 lbf49500 N

Factors

K - Factor71.71
e - ISO Factor80.34
Y - ISO Factor91.76

G1 - Heat Generation Factor (Roller-Raceway)

177.2

G2 - Heat Generation Factor (Rib-Roller End)

29.4
Cg - Geometry Factor100.0945
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 Geometry constant for Lubrication Life Adjustment Factor a3l.