ER Series

Low Breakaway Torque
Non-Coated
Standard

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Part Product Name Style2 Inch/Metric Inner Diameter Outer Diameter Width Dynamic Capacity Static Capacity Inner Ring Width Outer Ring Width Bearing Material Ring Material Finish Operating Temperature Enclosure Cage Material Fillet Radius Series Bore Size (in) Bore Size (mm) Dynamic Load Rating (lbf) Dynamic Load Rating (N) Inside Ring Width (in) Inside Ring Width (mm) Item Name Material Operating Temperature (Max) ºC Operating Temperature (Max) ºF Outside Diameter (in) Outside Diameter (mm) Outside Ring Width (in) Outside Ring Width (mm) Static Load Rating (lbf) Static Load Rating (N) Weight (lb) Bore Shape Fillet Radius/Chamfer (in) Fillet Radius/Chamfer (mm) Speed (Max) (rpm) Total Width (in) Total Width (mm) Clearance Filling Slot Include Snap Ring Outside Ring Shape Flange Diameter (in) Flange Diameter (mm) UPC
ER23 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter Precision Ground, Extended Inner Ring, Metric Outside Diameter Inch 1.4375" 72 mm 1.6875" 5755 lbf 3450 lbf 1.6875" 0.9375" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Black Oxide Less Than 300 ºF Double Sealed No Cage 0.04" Nice® 1.44 36.51 3450 15346 1.6875 42.8625 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter 52100 Bearing Quality Steel 148.9 300 2.84 72.00 0.9375 23.81 5755 25600 1.37 Round 0.040 1.02 5000 1.6875 42.86 C0 Single Row Non-Fill Slot No Flanged With Snap Ring Groove 3.0781 78.18 637400390730
ER23NC 1.6875" 0.9375" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Uncoated Less Than 300 ºF Double Sealed No Cage 0.04" 745795057029
ER23SFR RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter Inch 1.4375" 72 mm 1.6875" 5755 lbf 3450 lbf 1.6875" 0.9375" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Black Oxide Less Than 300 ºF Double Sealed No Cage 0.04" Nice® 1.44 36.51 3450 15346 1.6875 42.8625 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter 52100 Bearing Quality Steel 148.9 300 2.84 72.00 0.9375 23.81 5755 25600 1.37 Round 0.040 1.02 5000 1.6875 42.86 C0 Single Row Non-Fill Slot No Flanged With Snap Ring Groove 3.0781 78.18 637400400453
ER24 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter Precision Ground, Extended Inner Ring, Metric Outside Diameter Inch 1.5000" 80 mm 1.9375" 6535 lbf 4025 lbf 1.9375" 1.09375" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Black Oxide Less Than 300 ºF Double Sealed No Cage 0.062" Nice® 1.50 38.10 4025 17904 1.9375 49.2125 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter 52100 Bearing Quality Steel 148.9 300 3.15 80.00 1.0938 27.78 6535 29069 2 Round 0.062 1.57 5000 1.9375 49.21 C0 Single Row Non-Fill Slot No Flanged With Snap Ring Groove 3.4062 86.52 637400390747
ER24SFR RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter Inch 1.5000" 80 mm 1.9375" 6535 lbf 4025 lbf 1.9375" 1.09375" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Black Oxide Less Than 300 ºF Double Sealed No Cage 0.062" Nice® 1.50 38.10 4025 17904 1.9375 49.2125 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter 52100 Bearing Quality Steel 148.9 300 3.15 80.00 1.0938 27.78 6535 29069 2 Round 0.062 1.57 5000 1.9375 49.21 C0 Single Row Non-Fill Slot No Flanged With Snap Ring Groove 3.4062 86.52 637400400477
ER31 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter Precision Ground, Extended Inner Ring, Metric Outside Diameter Inch 1.9375" 90 mm 2.0313" 7900 lbf 5250 lbf 2.03125" 1.125" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Black Oxide Less Than 300 ºF Double Sealed No Cage 0.062" Nice® 1.94 49.21 5250 23353 2.0313 51.595 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter 52100 Bearing Quality Steel 148.9 300 3.54 90.00 1.1250 28.58 7900 35141 2.43 Round 0.062 1.57 5000 2.0313 51.6 C0 Single Row Non-Fill Slot No Flanged With Snap Ring Groove 3.7813 96.05 637400465476
ER31NC 2.03125" 1.125" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Uncoated Less Than 300 ºF Double Sealed No Cage 0.062" 745795057012
ER31SFR RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter Inch 1.9375" 90 mm 2.0313" 7900 lbf 5250 lbf 2.03125" 1.125" 52100 Bearing Quality Steel 52100 Bearing Quality Steel Black Oxide Less Than 300 ºF Double Sealed No Cage 0.062" Nice® 1.94 49.21 5250 23353 2.0313 51.595 RBC NICE Ball Bearings - ER SeriesTM Precision Ground Radial Bearings with Extended Inner Ring and Metric Outside Diameter 52100 Bearing Quality Steel 148.9 300 3.54 90.00 1.1250 28.58 7900 35141 2.43 Round 0.062 1.57 5000 2.0313 51.6 C0 Single Row Non-Fill Slot No Flanged With Snap Ring Groove 3.7813 96.05 637400465483
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