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• Longer bearing life achieved from higher capacity (vs. competitors)
• Longer lubrication life achieved from lower operating temperatures due to reduced internal friction and running torque from cage guided rollers
• Better contaminant purging from slots on cage face helps extend bearing life
• Greater fatigue strength and increased wear resistance provide tougher protection against shock and acceleration loading from a hardened steel cage
Unit of Measure

Specifications

Design Unit

 N/A Metric

d - Bore

 N/A 120 mm

Cage Type

 N/A EJ

Cage Material

 N/A Steel

Dimensions

D - Outer Diameter

 N/A 8.4646 in215 mm

B' - Inner Ring Width

 N/A 2.2835 in58 mm

B - Outer Ring Width

 N/A 2.2835 in58 mm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius1 N/A 0.080 in2.0 mm
r - Outer Ring "To Clear" Radius2 N/A 0.08 in2 mm

da - Inner Ring Backing Diameter

 N/A 143 mm5.6000 in

Da - Outer Ring Backing Diameter

 N/A 196 mm7.700 in

Basic Load Ratings

C0 - Static Radial Rating

 N/A 174000 lbf772000 N

C1(2) - Dynamic Radial Rating (Two-Rows)

 N/A 145000 lbf647000 N

Factors

e - ISO Factor3 N/A 0.25
Y0 - ISO Factor4 N/A 2.64
Y1 - ISO Factor5 N/A 2.7
Y2 - ISO Factor6 N/A 4.02

Reference Thermal Speed Rating (Grease)

 N/A 2700 rpm
Reference Thermal Speed Rating (Oil)7 N/A 3200 rpm
Cg - Geometry Factor8 N/A 0.0778
  • 1 Maximum housing fillet radius that bearing corners will clear.
  • 2 Maximum shaft fillet radius that bearing corners will clear.
  • 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. See engineering
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 7 See thermal speed ratings in the engineering section.
  • 8 Geometry constant for Lubrication Life Adjustment Factor a3l.