Unit of Measure

Key Dimensions

Cone Part Number

 N/A X30218MQ

Cup Part Number

 N/A Y30218MQ

Bore (d)

 N/A 90 mm3.5433 in

O.D. (D)

 N/A 160 mm6.2992 in

Width (T)

 N/A 32.5 mm1.2795 in
Dynamic Radial Load Rating - 1M Revs (C1) 1 N/A 285000 N64100 lbf
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 73900 N16600 lbf
e Factor 3 N/A 0.42
K Factor 4 N/A 1.39
Y Factor 5 N/A 1.43

Other Dimensions

Weight

 N/A 2.6 Kg5.8 lb

Inner Ring Width (B)

 N/A 30.000 mm1.1811 in

Outer Ring Width (C)

 N/A 26 mm1.0236 in
Effective Center Location6 N/A -0.5 mm-0.02 in
Max Shaft Fillet Radius7 N/A 2.540 mm0.100 in
Max Housing Fillet Radius8 N/A 2.03 mm0.08 in

Shaft Backing Shoulder Dia. - Frontface (da)

 N/A 102 mm4.02 in

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 106 mm4.17 in

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 146.05 mm5.75 in

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 151.90 mm6.00 in

Cage Location rel. to BF (Aa)

 N/A 0.3 mm0.01 in

Cage Location rel. to FF (Ab)

 N/A 5.6 mm0.22 in

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)9 N/A 53100 N11900 lbf

Static Radial Load Rating (C0)

 N/A 295000 N66200 lbf

Factors

G1 Factor

 N/A 125.9

G2 Factor

 N/A 47.7
Geometry Factor (Cg)10 N/A 0.0844
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 Negative value indicates effective center inside cone backface.
  • 7 These maximum fillet radii will be cleared by the bearing corners.
  • 8 These maximum fillet radii will be cleared by the bearing corners.
  • 9 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.
  • 10 Geometry constant for Lubrication Life Adjustment Factor a3l.