About Plain Bearings
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About Ball and Roller Bearings
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Ultra-Thin Ball Bearings
These bearings have twice as many contact points as angular-contact ball bearings. Fit onto large-diameter hollow shafts to run air and hydraulic lines, electrical wiring, and other components through moving parts in assemblies such as index and rotary tables, packaging equipment, and robotics.
Open bearings dissipate heat more efficiently than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | Moment Load Cap., ft.-lbs. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | For Housing ID | Wd. | Dynamic | Static | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Each | |
Steel Ring | |||||||||||||||
Open | |||||||||||||||
| 2 1/2" | 3" | 1/4" | 580 | 830 | 910 | 2,050 | 50 | 95 | 1,200 | Required | 30° | -60° to 250° | ABEC-1F | 0000000 | 0000000 |
Tapered-Roller Bearings
Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | For Housing ID | Wd. | Bearing Trade Number  | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Each | |
Steel Ring | ||||||||||||
Open | ||||||||||||
| 1 7/16" | 3" | 15/16" | 31597/31521 | 5,500 | 24,100 | 3,800 | 28,200 | 2,800 | Required | -60° to 200° | 00000000 | 0000000 |
| 1 1/2" | 3" | 3/4" | 2788/2720 | 4,650 | 23,000 | 2,400 | 20,300 | 2,800 | Required | -60° to 200° | 0000000 | 00000 |
Precision Needle-Roller Bearings
Install these bearings directly onto hardened and ground shafts. They have higher load capacity, speed, and accuracy than standard needle-roller bearings.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants.
Shaft liners allow you to use the bearing on unhardened and unground shafts.
For technical drawings and 3-D models, click on a part number.
Bearings | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Radial Load Cap., lbs. | Optional Shaft Liners | |||||||||||||
| For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range., °F | Each | For Shaft Dia. | Each | ||
Open | ||||||||||||||
| 2 1/4" | 3" | 1 1/2" | Steel | 15,100 | 33,200 | 5,900 | Required | 16 | 0° to 245° | 00000000 | 000000 | 1 3/4" | 00000000 | 000000 |
Sealed | ||||||||||||||
| 2 1/4" | 3" | 1 3/4" | Steel | 15,100 | 33,200 | 1,700 | Required | 16 | -30° to 250° | 00000000 | 000000 | 1 3/4" | 00000000 | 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 2 1/2" Shaft Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 3" | 2" | 10,000 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000000 |
| 3" | 2 1/2" | 12,500 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
| 3" | 3" | 15,000 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
| 3" | 4" | 20,000 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000000 |
For 2 3/4" Shaft Dia. | |||||||
| 3" | 1 1/2" | 8,250 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
| 3" | 2 1/2" | 13,750 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | 10° to 175° | 0000000 | 00000 |
High-Load Oil-Embedded Sleeve Bearings
Increased iron content makes these bearings stronger and more resistant to shock loads than standard oil-embedded bearings; however they operate at lower speeds. Startup friction causes them to release a thin layer of oil on the bearing’s surface. Color is silver because of the iron. These bearings are also magnetic due to the high iron content.
863 iron-copper bearings are also known as Super 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 2 1/2" Shaft Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 3" | 4" | 17,800 lbs. @ 30 rpm | Lubricated | SAE 90 Oil | -15° to 300° | 00000000 | 000000 |
High-Temperature Dry-Running Sleeve Bearings
Graphite provides a layer of dry lubrication that operates in high-temperature environments.
841 bearing bronze bearings are porous and embedded with graphite for continuous lubrication.
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 Method | Temperature Range, °F | Each | |
841 Bearing Bronze | ||||||
|---|---|---|---|---|---|---|
For 2 1/2" Shaft Dia. | ||||||
| 3" | 4" | 16,000 lbs. @ 30 rpm | Embedded | -50° to 700° | 00000000 | 0000000 |
Multipurpose Sleeve Bearings
These 932 bearing 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.