Use these bearings for light loads and small shafts. The closed backing blocks out dust and other contaminants from one side.

Shielded bearings are protected from dust and contaminants on both sides.Overall
Mounting
Radial Load
Cap., lbs.
For Shaft
Dia. Ht. Lg. Wd. Flange
Thick. Hole
Dia. Hole
Ctr.-to-Ctr. Dynamic Static Max.
Speed, rpm Temp.
Range, °F Alignment Style Lubrication Each
Open 440C Stainless Steel Bearings with PEEK Plastic Housing
Shaft Mount Type: Press Fit
1/8" 5/8" 1 5/32" 5/16" 11/64" 11/64" 3/4" 125 50 53,000 -140° to 480° Fixed Alignment Lubricated 4575N21 $9.16
3/16" 27/32" 1 3/8" 3/8" 11/64" 11/64" 31/32" 290 110 38,000 -140° to 480° Fixed Alignment Lubricated 4575N22 9.26
1/4" 27/32" 1 11/32" 19/64" 11/64" 11/64" 15/16" 80 230 36,000 -140° to 480° Fixed Alignment Lubricated 4575N23 9.70
5/16" 29/32" 1 1/2" 11/32" 3/16" 11/64" 1 3/32" 120 250 40,000 -140° to 480° Fixed Alignment Lubricated 4575N24 11.44
3/8" 1 35/64" 2 1/8" 31/64" 13/64" 3/16" 1 5/8" 740 310 32,000 -140° to 480° Fixed Alignment Lubricated 4575N25 14.90
Shielded 440C Stainless Steel Bearings with PEEK Plastic Housing
Shaft Mount Type: Press Fit
1/8" 5/8" 1 5/32" 5/16" 11/64" 11/64" 3/4" 125 50 53,000 -140° to 480° Fixed Alignment Lubricated 4575N31 9.46
3/16" 27/32" 1 3/8" 3/8" 11/64" 11/64" 31/32" 290 110 38,000 -140° to 480° Fixed Alignment Lubricated 4575N32 9.56
1/4" 27/32" 1 11/32" 19/64" 11/64" 11/64" 15/16" 80 230 36,000 -140° to 480° Fixed Alignment Lubricated 4575N33 10.00
5/16" 29/32" 1 1/2" 11/32" 3/16" 11/64" 1 3/32" 120 250 40,000 -140° to 480° Fixed Alignment Lubricated 4575N34 12.20
3/8" 1 35/64" 2 1/8" 31/64" 13/64" 3/16" 1 5/8" 740 310 32,000 -140° to 480° Fixed Alignment Lubricated 4575N35 15.20