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.
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 | ||||||||||||||
| ER39 | 2 7/16" | 4.331" | 1 1/4" | 2.9844" | 2.5625" | 4 37/64" | 0.09375" | 11,750 | 8,150 | 3,000 | -20° to 220° | ABEC-1 | 0000000 | 0000000 |
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.
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 Nickel-Plated Cast Iron Housing | |||||||||||||||
Shaft Mount Type: Set Screw | |||||||||||||||
| 2 7/16" | 2 3/4" | 5 7/16" | 9 1/2" | 2 15/16" | 31/32" | 25/32" | 7 1/4" | 11,750 | 8,100 | 2,000 | 0° to 210° | Self Aligning | Lubricated | 0000000 | 0000000 |
Permanently Lubricated Mounted Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Seals block out dust and contaminants.
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 | |||||||||||||||
| 2 7/16" | 2 3/4" | 5 7/16" | 9 1/2" | 2 15/16" | 1 5/32" | 23/32" | 7 13/32" | 11,800 | 8,150 | 2,400 | 10° to 175° | Self Aligning | Lubricated | 000000 | 0000000 |
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.
Sealed bearings block out dust and other contaminants better than shielded bearings.
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: Clamp On | |||||||||||||||
Without Torque Indicator | |||||||||||||||
| 2 7/16" | 2 3/4" | 5 9/16" | 9 1/2" | 2 3/4" | 1" | 11/16" | 7 1/4" | 11,700 | 8,150 | 4,100 | -20° to 200° | Self Aligning | Lubricated | 0000000 | 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.
Snap optional covers onto bearings to shield them from moisture. Made of polypropylene, they resist corrosion, won’t absorb water, and are FDA compliant.
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 | ||||||||||||||
| 2 7/16" | 2 3/4" | 5 9/16" | 9 1/2" | 2 15/16" | 0.875" | 7 1/4" | 11,750 | 8,150 | 1,250 | -20° to 220° | Lubricated | NSF Registered H1 | 0000000 | 0000000 |
| For Shaft Diameter | OD | Material | Mount Type | Temperature Range,°F | Specifications Met | Each | |
Closed | |||||||
|---|---|---|---|---|---|---|---|
| 2 3/8", 2 7/16", 60mm | 4 5/8", 117mm | Polypropylene Plastic | Snap In | -20° to 220° | FDA Compliant 21 CFR 177.1520 | 0000000 | 000000 |
Open | |||||||
| 2 3/8", 2 7/16", 60mm | 4 11/16", 119mm | Polypropylene Plastic | Snap In | -20° to 220° | FDA Compliant 21 CFR 177.1520 | 0000000 | 00000 |
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.
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 | ||||||||||||||||||
| 2 7/16" | 3 5/32" | 7" | 11" | 2 3/4" | 3/4" | 9 1/2" | 20,250 | 24,850 | __ | __ | 4,460 | 35° to 210° | Self Aligning | Required | 0000000 | 000000000 | 0000000 | 0000000 |
For Combined Radial and Thrust Load Direction | ||||||||||||||||||
| 2 7/16" | 3 5/32" | 7" | 11" | 2 3/4" | 3/4" | 9 1/2" | 20,250 | 24,850 | 350 | 350 | 4,460 | 35° to 210° | Self Aligning | Required | 0000000 | 00000000 | 0000000 | 000000 |
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.
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 | ||||||||||||||
| 2 7/16" | 5 7/16" | 9 1/4" | 2 29/32" | 13/16" | 11/16" | 7 61/64" | 11,800 | 8,050 | 3,400 | -20° to 210° | Self Aligning | Lubricated | 00000000 | 0000000 |
Mounted Ball Bearings with Four-Bolt Flange
Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
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.
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 | ||||||||||||||
| 2 7/16" | 6 7/8" | 6 7/8" | 2 29/32" | 23/32" | 5/8" | 5 5/8" | 11,800 | 8,050 | 3,400 | -20° to 210° | Self Aligning | Lubricated | 00000000 | 0000000 |
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.
Concentric-lock bearings have a collar that centers and secures the shaft in the bearing bore. To install, tighten the single screw on the collar around its inner ring on your shaft. These bearings have a secure grip on the shaft that reduces vibration and noise.
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: Concentric Lock | ||||||||||||||
| 2 7/16" | 2 11/16" | 6 7/8" | 3 51/64" | 13/16" | 5/8" | 5 5/8" | 11,780 | 8,150 | 1,250 | -20° to 220° | Self Aligning | IP69K | 0000000 | 0000000 |
Washdown Mounted Ball Bearings with Four-Bolt Flange
Meeting IP69K for washdown environments, these mounted ball bearings are used in food, beverage, pharmaceutical, and chemical plants. They have excellent corrosion resistance and prevent rusting caused by salt water, chlorine solutions, and chemicals because their housing is 316 stainless steel. All have USDA H1 approved lubrication, which is certified for incidental contact with food and is suitable for food and beverage applications.
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.
Snap optional covers onto bearings to shield them from moisture. Made of polypropylene, they resist corrosion, won’t absorb water, and are FDA compliant.
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 | Specifications Met | Each | |
Sealed Steel Bearings with 316 Stainless Steel Housing | |||||||||||||||
Shaft Mount Type: Set Screw | |||||||||||||||
| 2 7/16" | 6 7/8" | 6 7/8" | 2 11/16" | 13/16" | 21/32" | 5 5/8" | 11,750 | 8,510 | 1,250 | -20° to 220° | Self Aligning | Lubricated | NSF Registered H1 | 00000000 | 0000000 |
| For Shaft Diameter | OD | Material | Mount Type | Temperature Range,°F | Specifications Met | Each | |
Closed | |||||||
|---|---|---|---|---|---|---|---|
| 2 3/8", 2 7/16", 60mm | 4 5/8", 117mm | Polypropylene Plastic | Snap In | -20° to 220° | FDA Compliant 21 CFR 177.1520 | 0000000 | 000000 |
Open | |||||||
| 2 3/8", 2 7/16", 60mm | 4 11/16", 119mm | Polypropylene Plastic | Snap In | -20° to 220° | FDA Compliant 21 CFR 177.1520 | 0000000 | 00000 |
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.
| For Shaft Dia. | For Mounted Bearing Model No. | Each | |
Sealmaster Steel Insert Bearings | |||
|---|---|---|---|
Shaft Mount Type: Set Screw | |||
| 2 7/16" | NP-39, NPG-39-12, NPG-39-18, NPL-39, SC-39, SCHB-39, SEHB-39, SF-39, SFC-39, SP-39, ST-39, STH-39-12, STH-39-18 | 00000000 | 0000000 |
Thread-Mount Bearings
Combine with threaded pipe to mount these bearings in a variety of positions without the need for a flat mounting surface. Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.
NPSM (National Pipe Straight Mechanical) threads are compatible with NPT threads. See more about pipe thread type and sizing.
Overall | Radial Load Cap., lbs. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Pipe Size | Thread Type | Thread Lg. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Lubrication | Each | |
Sealed Steel Bearings with Ductile Iron Housing | |||||||||||||||
Shaft Mount Type: Set Screw | |||||||||||||||
| 2 7/16" | 4" | 6 13/16" | 5 5/8" | 2 9/16" | 1 1/4 | NPSM | 1 1/8" | 11,700 | 8,150 | 3,000 | -20° to 220° | Self Aligning | Lubricated | 000000 | 0000000 |
Hub-Mount Screw-Clamp Bushings
Transfer torque directly from a shaft to a hub. These bushings install over your hub to mount a sprocket, pulley, or gear to a shaft at the same time. Common in industrial gearbox applications, they can also connect a hollow shaft over a solid shaft. As screw-clamp bushings, they're good for shock loads. When you tighten the included clamping screws, the outer rings compress against a sprocket, pulley, or gear in between them, causing the inner rings to tighten around the shaft.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Fastener Tightening Torque, in.-lbs. | Material | Each | |
| 2 7/16" | 4 5/16" | 1 5/16" | 20,600 | 100 | Zinc-Plated Steel | 0000000 | 0000000 |
Taper-Lock Bushings
Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing style. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.
Quick-Disconnect (QD) Bushings
The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys. Bushings fit quick-disconnect (QD) sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.