About Ball and Roller Bearings
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Set Screw Collar Ball Bearings


Slip these bearings onto a shaft and secure with the included set screws, no special tools required. All have an extended inner ring for additional shaft support.
Bearings with a black-oxide steel ring have some corrosion resistance.
Sealed bearings block out dust and other contaminants better than shielded bearings.
Bearings with a retaining ring have a removable retaining ring that holds the bearing inside a housing.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | ABEC Rating | Each | |
Sealed (Lubricated) | ||||||||||||||
Black-Oxide Steel—With Retaining Ring | ||||||||||||||
ER31 | 1 15/16" | 3.543" | 1 1/8" | 2.477" | 2.031" | 3.781" | 0.094" | 7,900 | 5,250 | 5,000 | -20° to 250° | Not Rated | 0000000 | 0000000 |
One-Piece Thrust Ball Bearings

In addition to handling higher loads than three-piece ball bearings, one-piece bearings are easier to handle. They have an outer band that holds the bearing together and acts as a shield against dust and other contaminants.
For technical drawings and 3-D models, click on a part number.
Thrust Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Features | Each | |
Shielded | |||||||||||
1 15/16" | 3 7/32" | 13/16" | Steel | 10,800 | 27,500 | 2,200 | Required | -40° to 245° | Lubrication Hole | 00000000 | 000000 |
Mounted Ball Bearings
Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
Bearings with nickel-plated cast iron housing are more corrosion resistant and durable than bearings with a cast iron housing.
Bearings with a set screw secure to shafts without using a collar. They let shafts rotate in both directions, so they’re good for applications where you need to reverse. However, the set screw will leave some marring on the shaft.
Bearings with eccentric lock have a collar that you twist in one direction to grip and the other to release. Compared to bearings with a set screw, they’re easier to install, require less adjustment over time, and are better for high-speed applications. But, they only work on shafts that spin in one direction.
For technical drawings and 3-D models, click on a part number.


Overall | Mounting | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Lg. | Hole Wd. | Hole 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 15/16" | 2 1/4" | 4 15/16" | 8 1/8" | 2 3/8" | 7/8" | 5/8" | 6 1/4" | 7,850 | 5,200 | 3,500 | -20° to 220° | Self Aligning | Lubricated | 0000000 | 0000000 |
Shaft Mount Type: Eccentric Lock | |||||||||||||||
1 15/16" | 2 3/16" | 4 1/2" | 8 1/8" | 2 3/8" | 7/8" | 25/32" | 6 1/4" | 7,850 | 5,200 | 4,000 | -20° to 210° | Self Aligning | Lubricated | 0000000 | 000000 |
Sealed Steel Bearings with Nickel-Plated Cast Iron Housing | |||||||||||||||
Shaft Mount Type: Set Screw | |||||||||||||||
1 15/16" | 2 1/4" | 4 7/16" | 8 1/8" | 2 15/32" | 7/8" | 25/32" | 6 1/4" | 7,850 | 5,200 | 2,500 | 0° to 210° | Self Aligning | Lubricated | 0000000 | 00000 |
Permanently Lubricated Mounted Ball Bearings

A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Seals block out dust and contaminants.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Lg. | Hole Wd. | Hole 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 15/16" | 2 1/4" | 4 1/2" | 8 1/8" | 2 3/8" | 15/16" | 11/16" | 6 7/32" | 7,900 | 5,200 | 2,900 | 15° to 210° | Self Aligning | Lubricated | 000000 | 0000000 |
Washdown Mounted Ball Bearings
Meeting IP69K for washdown environments, these mounted ball bearings are used in food, beverage, pharmaceutical, and chemical plants. All have NSF registered H1 lubrication, which is certified for incidental contact with food and is suitable for food and beverage applications. Made of 316 stainless steel, they resist corrosion and prevent rusting caused by salt water, chlorine solutions, and chemicals.
Set screw bearings secure to shafts as you tighten their screw. They don’t need a collar, but the screw does leave some marring on shafts.
Clamp on bearings have a locking collar to center shafts and secure them better than set screw bearings, so there’s less vibration and noise. To install them, tighten the locking collar’s screw until it grips the inner ring.
Snap optional covers onto bearings to shield them from moisture. Made of polypropylene, they resist corrosion, won’t absorb water, and are FDA compliant.
For technical drawings and 3-D models, click on a part number.


Overall | Mounting | Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Dp. | Hole Ctr.-to-Ctr. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Lubrication | Specifications Met | Each | |
Self Aligning | ||||||||||||||
Shaft Mount Type: Set Screw | ||||||||||||||
1 15/16" | 2 1/4" | 4 9/16" | 8 1/8" | 2 15/32" | 0.75" | 6 1/4" | 7,850 | 5,200 | 1,500 | -20° to 220° | Lubricated | NSF Registered H1 | 0000000 | 0000000 |
Shaft Mount Type: Clamp On | ||||||||||||||
1 15/16" | 2 1/4" | 4 9/16" | 8 1/8" | 2 15/32" | 0.75" | 6 1/4" | 7,850 | 5,200 | 1,500 | -20° to 220° | Lubricated | NSF Registered H1 | 0000000 | 000000 |


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 15/16" | 2 1/4" | 4 5/8" | 5 1/2" | 2" | 5/8"-11 | 0.875" | 4" | 7,880 | 5,210 | 3,550 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 0000000 |
Shaft Mount Type: Concentric Lock | |||||||||||||||
1 15/16" | 2 1/4" | 4 5/8" | 5 1/2" | 2" | 5/8"-11 | 0.875" | 4" | 7,880 | 5,210 | 5,000 | -20° to 220° | Self Aligning | Lubricated | 00000000 | 000000 |
Extra-Clearance Mounted Ball Bearings

Keep shafts, such as those with a shoulder, clear of the mounting surface. These bearings have a higher mounting base that gives them more space to the mounting surface than standard mounting bases. All have a set screw for securing them to shafts without having to use a collar. The screw lets shafts rotate in both directions, so they’re good for applications where you need to reverse.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Lg. | Hole Wd. | Hole 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 15/16" | 4 21/64" | 6 1/2" | 8 1/8" | 2 3/4" | 7/8" | 25/32" | 6 1/4" | 7,850 | 5,200 | 2,500 | 0° to 210° | Self Aligning | Lubricated | 0000000 | 000000 |
High-Speed Mounted Ball Bearings

These bearings have the highest speed ratings of any mounted ball bearing that we offer. The clamp-on collar creates a 360° grip around the shaft for a strong, mar-free hold. Bearings are self-aligning to compensate for shaft misalignment.
Bearings with torque indicator tell you when the shaft is centered, ensuring smooth rotation in applications with high vibration.
Shielded bearings dissipate heat more efficiently than sealed bearings.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Lg. | Hole Wd. | Hole Ctr.-to-Ctr. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Lubrication | Each | |
Shielded Steel Bearings with Cast Iron Housing—Shaft Mount Type: Clamp On | |||||||||||||||
With Torque Indicator | |||||||||||||||
1 15/16" | 2 1/4" | 4 9/16" | 8 1/8" | 2 3/16" | 7/8" | 25/32" | 6 1/4" | 7,900 | 5,200 | 4,000 | -20° to 210° | Self Aligning | Lubricated | 0000000 | 0000000 |
Easy-Install Mounted Cylindrical-Roller Bearings


A split housing means you can remove the top half of these bearings to inspect or repair shafts and components. This reduces downtime and minimizes the risk of damaging surrounding components.
Bearings for radial loads accommodate minor changes in your shaft’s length as it expands and contracts from your machinery heating up and cooling down. They are typically used in assemblies with long shafts and positioned away from the drive end.
Bearings for combined radial and thrust loads anchor the shaft in position and absorb the thrust load. However, they are not designed to handle your shaft expanding and contracting. They’re typically mounted near the drive side of an assembly.
For technical drawings and 3-D models, click on a part number.
Mounted Bearings | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Mounting | Radial Load Cap., lbs. | Thrust Load Cap., lbs. | Replacement Bearings | ||||||||||||||
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Dia. | Hole Ctr.-to-Ctr. | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Lubrication | Each | Each | ||
Sealed Steel Bearings with Iron Housing—Shaft Mount Type: Clamp On | ||||||||||||||||||
For Radial Load Direction | ||||||||||||||||||
1 15/16" | 2 3/4" | 6 1/4" | 10 5/8" | 2 3/8" | 5/8" | 8 7/8" | 18,290 | 22,490 | __ | __ | 5,420 | 35° to 210° | Self Aligning | Required | 0000000 | 000000000 | 0000000 | 0000000 |
For Combined Radial and Thrust Load Direction | ||||||||||||||||||
1 15/16" | 2 3/4" | 6 1/4" | 10 5/8" | 2 3/8" | 5/8" | 8 7/8" | 18,290 | 22,490 | 280 | 280 | 5,420 | 35° to 210° | Self Aligning | Required | 0000000 | 00000000 | 0000000 | 000000 |
Mounted Ball Bearings with Four-Bolt Flange
Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
Bearings with nickel-plated cast iron housing are more corrosion resistant and durable than bearings with a cast iron housing.
Set screw bearings secure to shafts as you tighten their screw. They don’t need a collar, but the screw leaves some marring on shafts. Use them in applications where shafts rotate in both directions.
Eccentric lock bearings are quick to install—twist them in one direction to tighten and the opposite to loosen. They’re better than set screw bearings for high speed applications, but they only work with shafts that rotate in one direction.
For technical drawings and 3-D models, click on a part number.


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 | |
Sealed Steel Bearings with Cast Iron Housing | ||||||||||||||
Shaft Mount Type: Set Screw | ||||||||||||||
1 15/16" | 5 5/8" | 5 5/8" | 2 27/64" | 5/8" | 9/16" | 4 3/8" | 7,850 | 5,200 | 4,000 | -20° to 210° | Self Aligning | Lubricated | 0000000 | 0000000 |
Shaft Mount Type: Eccentric Lock | ||||||||||||||
1 15/16" | 5 5/8" | 5 5/8" | 2 7/16" | 21/32" | 1/2" | 4 3/8" | 7,850 | 5,200 | 4,000 | -20° to 210° | Self Aligning | Lubricated | 0000000 | 000000 |
Sealed Steel Bearings with Nickel-Plated Cast Iron Housing | ||||||||||||||
Shaft Mount Type: Set Screw | ||||||||||||||
1 15/16" | 5 5/8" | 5 5/8" | 2 5/32" | 5/8" | 5/8" | 4 3/8" | 7,890 | 5,230 | 2,500 | 0° to 210° | Self Aligning | Lubricated | 0000000 | 00000 |
High-Speed Mounted Ball Bearings with Four-Bolt Flange

These bearings have the highest speed ratings of any mounted ball bearing that we offer. The clamp-on collar creates a 360° grip around the shaft for a strong, mar-free hold. Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
For technical drawings and 3-D models, click on a part number.
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 | |
Sealed Steel Bearings with Cast Iron Housing | ||||||||||||||
Shaft Mount Type: Clamp On | ||||||||||||||
1 15/16" | 5 5/8" | 5 5/8" | 2 7/32" | 9/16" | 19/32" | 4 3/8" | 7,850 | 5,200 | 5,000 | -40° to 200° | Self Aligning | Lubricated | 0000000 | 0000000 |
Mounted Ball Bearings with Two-Bolt Flange


Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
Bearings with a set-screw shaft mount secure to shafts with no need for an additional collar. They can be used for bi-directional shaft rotation when applications require reversing action. The set screw may cause some marring on the shaft.
Bearings with an eccentric-lock shaft mount are better than bearings with a set-screw shaft mount for high-speed applications, but only rotate in a single direction.
For technical drawings and 3-D models, click on a part number.
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 | |
Sealed Steel Bearings with Cast Iron Housing | ||||||||||||||
Shaft Mount Type: Set Screw | ||||||||||||||
1 15/16" | 4 9/16" | 7 7/16" | 2 15/32" | 9/16" | 9/16" | 6 3/16" | 7,850 | 5,200 | 4,000 | -20° to 210° | Self Aligning | Lubricated | 0000000 | 0000000 |
Shaft Mount Type: Eccentric Lock | ||||||||||||||
1 15/16" | 4 9/16" | 7 7/16" | 2 15/32" | 9/16" | 9/16" | 6 3/16" | 7,850 | 5,200 | 4,000 | -20° to 210° | Self Aligning | Lubricated | 00000000 | 000000 |
Easy-Align Mounted Ball Bearings with Two-Bolt Flange

An elongated mounting hole on one side of the flange lets you adjust the position of these bearings without having to remove your shaft. You only need to loosen the bolt instead of removing it to adjust. They’re self-aligning to compensate for shaft misalignment.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Ht. | Lg. | Wd. | Flange Thick. | Hole Dia. | Hole Lg. | Hole 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 15/16" | 4 9/16" | 7 7/16" | 2 5/32" | 9/16" | 19/32" | 2 15/16" | 6 3/16" | 7,850 | 5,200 | 2,500 | 0° to 210° | Self Aligning | Lubricated | 0000000 | 000000 |
High-Speed Mounted Ball Bearings with Two-Bolt Flange

These bearings have the highest speed ratings of any mounted ball bearing that we offer. The clamp-on collar creates a 360° grip around the shaft for a strong, mar-free hold. Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
For technical drawings and 3-D models, click on a part number.
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 | |
Sealed Steel Bearings with Cast Iron Housing | ||||||||||||||
Shaft Mount Type: Clamp On | ||||||||||||||
1 15/16" | 4 9/16" | 7 7/16" | 2 7/32" | 9/16" | 19/32" | 6 3/16" | 7,850 | 5,200 | 5,000 | -40° to 200° | Self Aligning | Lubricated | 0000000 | 0000000 |
Insert Bearings


Swap out worn inserts instead of replacing the entire mounted unit. Use the manufacturer model number on your existing mounted bearing to choose a compatible insert. Inserts must be used with the manufacturer model number specified.
Bearings with eccentric lock have a collar that grips in one direction and releases in the other. They are easier to install onto shafts than bearings with a set screw grip and require less adjustment over time. Use with shafts that spin in one direction only.
For technical drawings and 3-D models, click on a part number.
For Shaft Dia. | For Mounted Bearing Model No. | Each | |
SKF Steel Insert Bearings | |||
---|---|---|---|
Shaft Mount Type: Set Screw | |||
1 15/16" | F2B 115-TF, F4B 115-TF, FYT 1.15/16 RM | 0000000 | 0000000 |
Shaft Mount Type: Eccentric Lock | |||
1 15/16" | P2BL 115-WF, SYH 1.15/16 WF | 00000000 | 000000 |
Sealmaster Steel Insert Bearings | |||
Shaft Mount Type: Set Screw | |||
1 15/16" | FB-31, NP-31, NPG-31-12, NPG-31-18, NPL-32, SC-31, SCHB-31, SEHB-31, SF-31, SFC-31, SFT-31, SP-31, ST-31, STH-31-12, STH-31-18, TB-31 | 00000000 | 000000 |
Mounted Bearings with Three-Bolt Flange
Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
Steel bearings are stronger than stainless steel bearings, but not as corrosion resistant.
For technical drawings and 3-D models, click on a part number.

Overall | Mounting | Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Flange Thick. | Hole Dia. | Hole Ctr.-to-Ctr. Lg. | Hole Ctr.-to-Ctr. Ht. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Each | |
Sealed Steel Ball Bearings with Nickel-Plated Cast Iron Housing—Self Aligning | ||||||||||||||
Shaft Mount Type: Set Screw | ||||||||||||||
1 15/16" | 4 17/32" | 7 1/4" | 4 13/32" | 2 1/16" | 23/32" | 7/16" | 2 9/32" | 1 13/16" | 7,850 | 5,200 | 2,500 | 0° to 210° | 0000000 | 000000 |