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Fafnir® ER51 ER Series Relubricatable Standard Duty Ball Insert Bearing Housed Unit, 3-3/16 in Dia Bore, 5.511 in OD, 1 Rows, 3-1/16 in W, 17900 lb Dynamic/12200 lb Static Load

  • Item#: ER51
  • Mfr#: ER51
  • UPC: 087796074637
  • Set screw wide-inner-ring
  • This bearing is designed for use in applications where low-starting torque and low-running torque are necessary
  • Test results indicate an average of 95% reduction in start-up torque when using ER-DD instead of the standard ER bearing
  • Running torque is reduced up to 85% to 90%
  • Min. Order Qty: 1
  • Qty. Interval: 1
  • loading


Timken® ball bearing housed units feature a wide-inner-ring ball bearing for additional shaft support. Designed for mounting on straight shafts with a slip fit, these housed units are available in an extensive array of types and sizes to accommodate many industrial applications. When set screws are used, Timken® suggests using shaftguarding Technology™, a stainless-steel, hardened band that is inserted in a groove on the inner ring. When the set screws are tightened, they press against the band, tightening the grip on the shaft. Unlike traditional set screws, which can dig into the shaft, there are no nicks, raised metal or permanent shaft damage. The stainless band resists the formation of corrosion on the shaft.

Fafnir® Ball Insert Bearing Housed Unit, Relubricatable Standard Duty, Series: ER Series, 3-3/16 in Bore, 5.511 in OD, 1 Rows, 3-1/16 in Width, Double Seal Closure, 17900 lb Dynamic/12200 lb Static Load, Steel Bearing, Rubber Seal, Nylon Cage, 1590 rpm Maximum, -30 to 275 deg F, Black Oxide


Bearing Material      :      Steel
Cage Material      :      Nylon
Closure Type      :      Double Seal
Finish      :      Black Oxide
Maximum Speed      :      1590 rpm
Seal Material      :      Rubber
Series      :      ER Series
Temperature Rating      :      -30 to 275 deg F
Type      :      Relubricatable Standard Duty
Bore Diameter      :      3-3/16 in
Outside Diameter      :      5.511 in
Number of Rows      :      1
Width      :      3-1/16 in
Load Capacity      :      17900 lb Dynamic/12200 lb Static


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