Pitchlign Caged Roller Followers - With and Without Seals

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Series SRF without seals

Part Number: SRF 25
Without Seals

D. Max: 1.250
Inside Diameter Nominal: 5/8
Corner Radius: 0.06
Approx Weight [lbs]: 0.129
Matching Inner Rings:
Critical Angle [deg] 2: 60.1
Speed Limit [rpm] 3: 8700
Roller D Min: 1.249
Roller B Min +.000/-.005: 0.620
Inside Dia. Min: 0.6258
Inside Dia. Max: 0.6267
Bearing Dynamic Capacity C [lbf]: 2700
Bearing Static Capacity Co [lbf] 1: 3300
Track Capacity at 40 Rc [lbf]: 1950
Max: 0.6250
Min: 0.6246

All dimensions are in inches

Normal operating loads should not exceed the bearing dynamic capacity

Roller followers used without inner rings require a shaft with minimum hardness of Rc 58 and surface finish of 16 rms or better

Standard configuration of roller follower series SRF-- SS is with seal lips facing outward. To specify roller followers with seal lips facing inward, replace suffix -SS with suffix -RR. (example: SRF 30 RR)

  1. Bearing Static Capacity provided for comparison only
  2. For oscillatory application with angle of oscillation less than critical angle, consult RBC engineering department for revised fatigue calculation
  3. Speed limit of sealed roller followers is determined by maximum seal surface speed.
    For roller followers without seals, speed limit may be increased by 30% with oil lubrication.