Pitchlign Caged Roller Followers - With and Without Seals

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Series SRF--SS with seals

Part
Number
Roller D
Max
Roller D
Min
Roller B Inside
Diameter
Nominal
Bearing
Dynamic
Capacity
C [lbf]
Speed Limit
[rpm]
Matching
Inner
Rings
SRF 20 SS 1.000 0.999 0.620 1/2 1200 7600
SRF 25 SS 1.250 1.249 0.620 5/8 1600 6100
SRF 30 SS 1.500 1.499 0.745 3/4 2300 5100 IR 7153, IR 7153 C
SRF 35 SS 1.750 1.749 0.745 7/8 2400 4400 IR 7173, IR 7173 C
SRF 40 SS 2.000 1.999 0.995 1 5000 3800 IR 7194, IR 7194 C
SRF 45 SS 2.250 2.249 0.995 1 1/4 4900 3100 IR 7234
SRF 50 SS 2.500 2.499 0.995 1 3/8 5100 2800 IR 7254, IR 7254 D
SRF 55 SS 2.750 2.749 1.245 1 1/2 8000 2500 IR 7275, IR 7275 C
  1. All dimensions are in inches
  2. Normal operating loads shoud not exceed the bearing dynamic capacity.
  3. Roller followers used without inner rings require a shaft with minimum hardness of Rc 58 and surface finish of 16 rms or better
  4. 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).
  5.  Speed limit of sealed roller followers is determind by maximum seal surface speed.