About Ball and Roller Bearings
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About Plain Bearings
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Stainless Steel Ball Bearings
Bearings are 440C stainless steel for good corrosion resistance.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Bearings with extended inner ring provide additional shaft support.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number  | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
| R155 | 5/32" | 5/16" | 7/64" | 440C Stainless Steel | 80 | 25 | 63,000 | Lubricated | -40° to 240° | ABEC-5 | 000000000 | 00000 |
Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
| R155-2Z | 5/32" | 5/16" | 1/8" | 440C Stainless Steel | 80 | 25 | 63,000 | Lubricated | -40° to 240° | ABEC-5 | 000000000 | 00000 |
Inner Ring | Radial Load Cap., lbs. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
| R155-2Z | 5/32" | 5/16" | 1/8" | 0.218" | 0.156" | 440C Stainless Steel | 80 | 25 | 63,000 | Lubricated | -40° to 240° | ABEC-5 | 00000000 | 00000 |
Precision Stainless Steel Ball Bearings
Made to tight tolerances, these 440C stainless steel bearings combine speed and accuracy with corrosion resistance.
Open bearings dissipate heat more efficiently than shielded bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
| R155 | 5/32" | 5/16" | 7/64" | 440C Stainless Steel | 55 | 15 | 68,000 | Lubricated | -10° to 240° | ABEC-7 | 0000000 | 000000 |
Shielded | ||||||||||||
| R155-2Z | 5/32" | 5/16" | 1/8" | 440C Stainless Steel | 40 | 15 | 20,000 | Lubricated | -10° to 240° | ABEC-7 | 0000000 | 00000 |
Flanged Ball Bearings
440C stainless steel bearings are more corrosion resistant than steel bearings.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Bearings with extended inner ring provide additional shaft support.
For technical drawings and 3-D models, click on a part number.
Flange | Radial Load Cap., lbs. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
| R155 | 5/32" | 5/16" | 7/64" | 0.359" | 0.02" | 440C Stainless Steel | 80 | 25 | 63,000 | Lubricated | -20° to 250° | ABEC-5 | 000000000 | 00000 |
Flange | Radial Load Cap., lbs. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
| R155-2Z | 5/32" | 5/16" | 1/8" | 0.359" | 0.04" | 440C Stainless Steel | 80 | 25 | 63,000 | Lubricated | -20° to 250° | ABEC-5 | 000000000 | 00000 |
with Extended
Inner Ring
Flange | Inner Ring | Radial Load Cap., lbs. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | OD | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
| R155-2Z | 5/32" | 5/16" | 1/8" | 0.359" | 0.04" | 0.218" | 0.156" | 440C Stainless Steel | 80 | 25 | 63,000 | Lubricated | -20° to 250° | ABEC-5 | 0000000 | 000000 |
Precision Flanged Ball Bearings
When speed and accuracy matter most, opt for these bearings. They’re made to tighter tolerances than standard flanged ball bearings. All are 440C stainless steel for good corrosion resistance. The flange ensures proper positioning inside a tube or housing.
Open bearings dissipate heat more efficiently than shielded bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Flange | Radial Load Cap., lbs. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||||
| R155 | 5/32" | 5/16" | 7/64" | 0.359" | 0.02" | 440C Stainless Steel | 55 | 15 | 68,000 | Lubricated | -10° to 240° | ABEC-7 | 000000 | 000000 |
Shielded | ||||||||||||||
| R155-2Z | 5/32" | 5/16" | 1/8" | 0.359" | 0.04" | 440C Stainless Steel | 40 | 15 | 20,000 | Lubricated | -60° to 250° | ABEC-7 | 0000000 | 00000 |
Oil-Embedded Sleeve Bearings
Startup friction causes these bearings to release a thin layer of oil on the bearing’s surface. They are also known as Oilite® bearings.
Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.
For technical drawings and 3-D models, click on a part number.
| For Housing ID | Lg. | Dynamic Radial Load Capacity | Lubrication | Lubricant | Temperature Range, °F | Each | |
For 5/32" Shaft Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 7/32" | 1/4" | 75 lbs. @ 120 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
| 1/4" | 1/4" | 75 lbs. @ 120 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000 |
| 1/4" | 5/16" | 95 lbs. @ 120 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000 |
| 1/4" | 3/8" | 115 lbs. @ 120 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 0000 |
Oil-Embedded Flanged Sleeve Bearings
Startup friction causes these bearings to release a thin layer of oil on the bearing’s surface. They’re flanged, so they handle loads both parallel and perpendicular to the shaft. They’re also known as Oilite® bearings.
Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.
For technical drawings and 3-D models, click on a part number.
| For Housing ID | Lg. | Flange OD | Flange Thick. | Dynamic Radial Load Capacity | Dynamic Thrust Load Capacity | Lubrication | Lubricant | Temperature Range, °F | Each | |
841 Bronze Bearings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For 5/32" Shaft Dia. | ||||||||||
| 1/4" | 3/8" | 3/8" | 1/16" | 115 lbs. @ 120 rpm | 180 lbs. @ 120 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000000 |
Multipurpose Flanged Sleeve Bearings
These bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 660 leaded bronze bearings.
Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.
For technical drawings and 3-D models, click on a part number.
| For Housing ID | Lg. | Flange OD | Flange Thick. | Dynamic Radial Load Capacity | Dynamic Thrust Load Capacity | Lubrication | Temperature Range, °F | Each | |
932 Bearing Bronze Bearings | |||||||||
|---|---|---|---|---|---|---|---|---|---|
For 5/32" Shaft Dia. | |||||||||
| 1/4" | 3/8" | 3/8" | 1/16" | 230 lbs. @ 120 rpm | 360 lbs. @ 120 rpm | Required | -350° to 450° | 00000000 | 000000 |
| 5/16" | 1/4" | 7/16" | 1/16" | 155 lbs. @ 120 rpm | 520 lbs. @ 120 rpm | Required | -350° to 450° | 00000000 | 00000 |
| 5/16" | 3/8" | 7/16" | 1/16" | 230 lbs. @ 120 rpm | 520 lbs. @ 120 rpm | Required | -350° to 450° | 00000000 | 00000 |
| 3/8" | 3/8" | 7/16" | 1/16" | 230 lbs. @ 120 rpm | 520 lbs. @ 120 rpm | Required | -350° to 450° | 00000000 | 00000 |
Needle-Roller Bearings
Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.
Open bearings dissipate heat more efficiently than sealed bearings.
Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Specifications Met | Each | |
Open | ||||||||||||
| 5/32" | 9/32" | 1/4" | Steel | 280 | 210 | 44,000 | Required | 8 | -20° to 280° | DIN 281, ISO 76 | 00000000 | 000000 |
Low-Profile Mounted Ball Bearings
Designed with a thin, compact housing, these bearings are good for space-constrained applications.
Sealed bearings block out dust and other contaminants better than shielded bearings.
Shielded bearings dissipate heat more efficiently than sealed bearings.
For technical drawings and 3-D models, click on a part number.
Overall | Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Ctr.-to-Ctr. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Lubrication | Each | |
Sealed 440C Stainless Steel Bearings with Aluminum Housing | |||||||||||||
Shaft Mount Type: Press Fit | |||||||||||||
| 5/32" | 3/8" | 3/4" | 1 29/64" | 13/64" | 1 1/8" | 65 | 27 | 26,500 | 0° to 230° | Fixed Alignment | Lubricated | 0000000 | 000000 |
Overall | Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Center Ht. | Ht. | Lg. | Wd. | Hole Ctr.-to-Ctr. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | Alignment Style | Lubrication | Each | |
Shielded 440C Stainless Steel Bearings with Aluminum Housing | |||||||||||||
Shaft Mount Type: Press Fit | |||||||||||||
| 5/32" | 3/8" | 3/4" | 1 29/64" | 13/64" | 1 1/8" | 65 | 27 | 53,000 | -30° to 300° | Fixed Alignment | Lubricated | 00000000 | 000000 |