About Plain Bearings
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Selecting Compatible Lead Screws and Nuts
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Oil-Embedded Sleeve Bearings
Startup friction causes these porous bronze 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 3/4" Shaft Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1" | 2 1/4" | 3,350 lbs. @ 60 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000000 |
For 7/8" Shaft Dia. | |||||||
| 1 1/8" | 2 1/4" | 3,900 lbs. @ 60 rpm | Lubricated | SAE 30 Oil | 10° to 175° | 00000000 | 0000 |
For 1" Shaft Dia. | |||||||
| 1 1/4" | 2 1/4" | 4,500 lbs. @ 60 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
| 1 3/8" | 2 1/4" | 4,500 lbs. @ 60 rpm | Lubricated | SAE 30 Oil | 10° to 175° | 00000000 | 00000 |
For 1 1/8" Shaft Dia. | |||||||
| 1 3/8" | 2 1/4" | 5,050 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | 10° to 175° | 0000000 | 00000 |
For 1 1/2" Shaft Dia. | |||||||
| 1 3/4" | 2 1/4" | 6,750 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
For 1 3/4" Shaft Dia. | |||||||
| 2" | 2 1/4" | 7,850 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
For 2 1/2" Shaft Dia. | |||||||
| 2 7/8" | 2 1/4" | 11,250 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 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.
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 1" Shaft Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1 1/4" | 2 1/4" | 5,000 lbs. @ 60 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.
Graphalloy bearings perform at extreme temperatures and under water. They are electrically conductive and wear resistant.
932 bearing bronze bearings are cast, making them strong, wear resistant, and excellent at handling shock loads. They are sometimes called 660 leaded bronze bearings.
Grooved bearings have a graphite-filled groove on the inside of the bearing that distributes lubricant evenly along the bearing’s surface.
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 1" Shaft Dia. | ||||||
| 1 1/4" | 2 1/4" | 3,600 lbs. @ 60 rpm | Embedded | -50° to 700° | 00000000 | 000000 |
Graphalloy | ||||||
For 1 7/16" Shaft Dia. | ||||||
| 1 15/16" | 2 1/4" | 2,400 lbs. @ 30 rpm | Embedded | -450° to 750° | 0000000 | 000000 |
For 1 1/2" Shaft Dia. | ||||||
| 2" | 2 1/4" | 2,500 lbs. @ 30 rpm | Embedded | -450° to 750° | 0000000 | 000000 |
932 Bearing Bronze | ||||||
For 1 1/4" Shaft Dia. | ||||||
| 1 1/2" | 2 1/4" | 9,800 lbs. @ 30 rpm | Grooved | -350° to 450° | 00000000 | 00000 |
Multipurpose Dry-Running Sleeve Bearings
Reinforced with polyester fabric, these plastic bearings have load and speed capabilities comparable to metal bearings. Bearings resist corrosion in outdoor and saltwater environments.
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 | Color | Temperature Range, °F | Each | |
For 2 1/4" Shaft Dia. | ||||||
|---|---|---|---|---|---|---|
| 2 1/2" | 2 1/4" | 7,150 lbs. @ 30 rpm | Blue | -40° to 150° | 0000000 | 000000 |
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.
| For Housing ID | Lg. | Dynamic Radial Load Capacity | Lubrication | Temperature Range, °F | Each | |
932 Bearing Bronze Bearings | ||||||
|---|---|---|---|---|---|---|
For 1" Shaft Dia. | ||||||
| 1 1/4" | 2 1/4" | 9,000 lbs. @ 60 rpm | Required | -350° to 450° | 00000000 | 000000 |
Press-Fit Drill Bushings
Mount flush with jig plates for precise drilling. These bushings can also be used as spacers, shims, and machinery bushings.
Don't see the size you need? Additional sizes are available.
For technical drawings and 3-D models, click on a part number.
Tolerance | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | Lg. | For Drill Bit Size | ID | OD | Lg. | Drill Bushing Type | Material | Hardness | 1-5 | 6-11 | 12-Up | |
0.75" ID | ||||||||||||
| 1" | 2 1/4" | 3/4" | 0.0002" to 0.0006" | 0.0015" to 0.0018" | -0.015" to 0.015" | P | Steel | Rockwell C61 | 00000000 | 000000 | 000000 | 000000 |
| 1 1/2" | 2 1/4" | 3/4" | 0.0002" to 0.0006" | 0.0018" to 0.0022" | -0.015" to 0.015" | P | Steel | Rockwell C61 | 00000000 | 00000 | 00000 | 00000 |
0.875" ID | ||||||||||||
| 1 1/8" | 2 1/4" | 7/8" | 0.0002" to 0.0006" | 0.0017" to 0.002" | -0.015" to 0.015" | P | Steel | Rockwell C61 | 00000000 | 00000 | 00000 | 00000 |
Tolerance | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | Lg. | For Drill Bit Size | ID | OD | Lg. | Drill Bushing Type | Material | Hardness | 1-5 | 6-11 | 12-Up | |
1.25" ID | ||||||||||||
| 1 1/2" | 2 1/4" | 1 1/4" | 0.0002" to 0.0006" | 0.0018" to 0.0022" | -0.015" to 0.015" | P | Steel | Rockwell C61 | 00000000 | 000000 | 000000 | 000000 |
Precision Acme Lead Screws and Nuts
Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, please select components that have the same thread direction and size.
932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Platform nuts have wide, machinable surfaces for custom mounting.
| Thread Size  | Lg. | Wd. | Ht. | Center Ht. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
932 Bearing Bronze | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/4"-5 | 2 1/4" | 2 5/8" | 1 5/8" | 15/16" | 1 | 1:1 | 0.2" | Class 2C | Brinell 65 | 2,800 | 000000 | 0000000 |
| 3/4"-6 | 2 1/4" | 2 5/8" | 1 5/8" | 15/16" | 1 | 1:1 | 0.167" | Class 2C | Brinell 65 | 2,800 | 000000 | 000000 |
| 3/4"-10 | 2 1/4" | 2 5/8" | 1 5/8" | 15/16" | 1 | 1:1 | 0.1" | Class 2C | Brinell 65 | 2,800 | 0000000 | 000000 |
Platform nuts have wide, machinable surfaces for custom mounting.
| Thread Size | Lg. | Wd. | Ht. | Center Ht. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
932 Bearing Bronze | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/4"-5 | 2 1/4" | 2 5/8" | 1 5/8" | 15/16" | 1 | 1:1 | 0.2" | Class 2C | Brinell 65 | 2,800 | 0000000 | 0000000 |
| 3/4"-6 | 2 1/4" | 2 5/8" | 1 5/8" | 15/16" | 1 | 1:1 | 0.167" | Class 2C | Brinell 65 | 2,800 | 0000000 | 000000 |
| 3/4"-10 | 2 1/4" | 2 5/8" | 1 5/8" | 15/16" | 1 | 1:1 | 0.1" | Class 2C | Brinell 65 | 2,800 | 0000000 | 000000 |
Flange nuts have wide, machinable surfaces for custom mounting.
Flange | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Dia. | Thick. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Each | |
932 Bearing Bronze | |||||||||||||
| 3/4"-5 | 2 1/4" | 1.375" | 2 5/8" | 9/16" | 1 | 1:1 | 0.2" | Class 2C | Brinell 65 | 35,000 | 2,800 | 000000000 | 0000000 |
| 3/4"-6 | 2 1/4" | 1.375" | 2 5/8" | 9/16" | 1 | 1:1 | 0.167" | Class 2C | Brinell 65 | 35,000 | 2,800 | 000000000 | 000000 |
| 3/4"-10 | 2 1/4" | 1.375" | 2 5/8" | 9/16" | 1 | 1:1 | 0.1" | Class 2C | Brinell 65 | 35,000 | 2,800 | 000000000 | 000000 |
Wheel Bearings
Replace worn or damaged wheel bearings to keep your equipment rolling. Use flanged bearings and ball bearings in pairs. Change the axle diameter with wheel reducer bushings (sold separately).
Note: Not for use in towing applications.
For impact-resistant tapered roller bearings, as well as other bearing materials and sizes, please see Ball and Roller Bearings and Sleeve Bearings. Roller bearings provide smooth rolling.
Retaining washers hold roller bearings in place.
For technical drawings and 3-D models, click on a part number.
| For Axle Dia. | OD | Lg. | Each | |
Roller Bearings | ||||
|---|---|---|---|---|
| 1" | 1 9/16" | 2 1/4" | 00000000 | 000000 |
Wheel Reducer Bushings
Reduce the inside diameter of a bearing to fit a particular axle size. Also known as spanner bushings, they also reduce wear on the axle when used in plain bores and with straight roller bearings. All have a hole for lubrication.
Washers slide over the bushing and add 3/32" to the hub length of your wheel. Multiple washers can be used to match the length of the bushing.
For technical drawings and 3-D models, click on a part number.
