About Ball and Roller Bearings
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Compact-Base Mounted Ball Bearings
Also known as tapped-base bearings, these ball bearings mount to surfaces from the bottom through threaded holes. Because of their narrow profile, they’re commonly used in tight-clearance spaces, including systems where multiple shafts are mounted close together.
Set screw shaft-mount bearings secure to shafts when you tighten the set screw, with no need for an additional collar. Set screws cause some amount of marring on shafts.
Concentric lock shaft-mount bearings have a locking collar that centers and secures the shaft in the bearing bore. To install these bearings, tighten the single screw on the locking collar around its inner ring on your shaft. Their firm grip on shafts reduces vibration for quieter operation.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Hole | Radial Load Cap., lbs. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Thread Size  | Dp. | Ctr.-to-Ctr. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Lubrication | Each | |
Sealed Steel Bearings with Cast Iron Housing | |||||||||||||||
Shaft Mount Type: Set Screw | |||||||||||||||
| 1/2" | 1 5/16" | 2 9/16" | 3 1/8" | 1 1/2" | 3/8"-16 | 0.5" | 2" | 2,610 | 1,440 | 7,300 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 0000000 |
| 5/8" | 1 5/16" | 2 9/16" | 3 1/8" | 1 1/2" | 3/8"-16 | 0.5" | 2" | 2,610 | 1,440 | 7,300 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 000000 |
| 3/4" | 1 5/16" | 2 9/16" | 3 1/8" | 1 1/2" | 3/8"-16 | 0.5" | 2" | 2,610 | 1,440 | 7,300 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 000000 |
| 20mm | 33.3mm | 65.1mm | 79.4mm | 38.1mm | 3/8"-16 | 12.7mm | 50.8mm | 2,610 | 1,440 | 7,300 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 000000 |
Shaft Mount Type: Concentric Lock | |||||||||||||||
| 3/4" | 1 5/16" | 2 9/16" | 3 1/8" | 1 1/2" | 3/8"-16 | 0.5" | 2" | 2,610 | 1,440 | 10,200 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 000000 |
Permanently Lubricated Washdown Mounted Ball Bearings with Four-Bolt Flange
Made to withstand frequent washdowns, these bearings are permanently lubricated, which means you’ll never have to add lubricant. Use them in hard-to-reach areas in food, beverage, pharmaceutical, and chemical plants. With a 316 stainless steel housing, these bearings won’t rust from salt water, chlorine, or chemicals. All are lubricated with NSF registered H1 grease, which is certified for incidental contact with food.
Set-screw bearings secure to shafts as you tighten their screw. They don’t need a collar; however, the screws leave some marring on the shaft.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting | Radial Load Capacity, lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Height | Length | Width | Flange Thick. | Hole Dia. | Hole Ctr.-to-Ctr. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Environmental Rating | Each | |
Sealed Steel Bearings with 316 Stainless Steel Housing | ||||||||||||||
Shaft Mount Type: Set Screw | ||||||||||||||
| 3/4" | 1 9/32" | 3 3/8" | 2 19/64" | 7/16" | 3/8" | 2 1/2" | 2,610 | 1,440 | 3,100 | -20° to 220° | Self Aligning | IP69K | 0000000 | 0000000 |
| 20mm | 32.5mm | 85.7mm | 58.3mm | 11.1mm | 9.5mm | 63.5mm | 2,610 | 1,440 | 3,100 | -20° to 220° | Self Aligning | IP69K | 0000000 | 000000 |