About Ball and Roller Bearings
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Selecting Compatible Lead Screws and Nuts
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About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
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Ball 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.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
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 | |
R10 | 5/8" | 1 3/8" | 9/32" | Steel | 1,340 | 730 | 24,000 | Lubricated | -65° to 275° | ABEC-1 | 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 | |
R4A-2Z | 1/4" | 3/4" | 9/32" | Steel | 520 | 200 | 38,000 | Lubricated | -58° to 302° | ABEC-1 | 000000000 | 00000 |
R6-2Z | 3/8" | 7/8" | 9/32" | Steel | 740 | 310 | 31,000 | Lubricated | -58° to 302° | ABEC-1 | 000000000 | 0000 |
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 | |
R4A-2RS | 1/4" | 3/4" | 9/32" | Steel | 520 | 200 | 19,000 | Lubricated | -58° to 302° | ABEC-1 | 000000000 | 00000 |
R6-2RS | 3/8" | 7/8" | 9/32" | Steel | 740 | 310 | 15,500 | Lubricated | -58° to 302° | ABEC-1 | 000000000 | 0000 |
Permanently Lubricated Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Because it's solid, the lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than 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 | ||||||||||||
R10 | 5/8" | 1 3/8" | 9/32" | Steel | 1,300 | 730 | 12,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
Sealed | ||||||||||||
R4A-2RS | 1/4" | 3/4" | 9/32" | Steel | 520 | 200 | 24,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
R6-2RS | 3/8" | 7/8" | 9/32" | Steel | 740 | 310 | 19,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
High-Load Ball Bearings
With a wider profile than standard ball bearings, these rugged bearings are good for handling heavy loads at low speeds.
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.
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 | |
1603 | 5/16" | 7/8" | 9/32" | Steel | 640 | 250 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
1604 | 3/8" | 7/8" | 9/32" | Steel | 640 | 250 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 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 | |
1603-2Z | 5/16" | 7/8" | 9/32" | Steel | 640 | 250 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
1604-2Z | 3/8" | 7/8" | 9/32" | Steel | 640 | 250 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
Light Duty Ball Bearings
Use these bearings where high speed and precision are not a concern.
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 | |
Shielded | ||||||||||||
3003-2Z | 5/16" | 7/8" | 9/32" | Steel | 320 | 250 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
3004-2Z | 3/8" | 7/8" | 9/32" | Steel | 320 | 250 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
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.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
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 | |
R10 | 5/8" | 1 3/8" | 9/32" | 440C Stainless Steel | 1,050 | 650 | 21,000 | Lubricated | -40° to 240° | ABEC-1 | 0000000 | 000000 |
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 | |
R6-2Z | 3/8" | 7/8" | 9/32" | 440C Stainless Steel | 590 | 300 | 32,000 | Lubricated | -40° to 240° | ABEC-1 | 0000000 | 000000 |
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 | |
R6-2RS | 3/8" | 7/8" | 9/32" | 440C Stainless Steel | 590 | 300 | 32,000 | Lubricated | -40° to 240° | ABEC-1 | 0000000 | 000000 |
Permanently Lubricated Stainless Steel Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than 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 | ||||||||||||
R10 | 5/8" | 1 3/8" | 9/32" | 440C Stainless Steel | 830 | 730 | 12,000 | Lubricated | -10° to 200° | ABEC-1 | 000000 | 000000 |
Sealed | ||||||||||||
R4A-2RS | 1/4" | 3/4" | 9/32" | 440C Stainless Steel | 405 | 198 | 24,000 | Lubricated | -10° to 200° | ABEC-1 | 0000000 | 00000 |
R6-2RS | 3/8" | 7/8" | 9/32" | 440C Stainless Steel | 460 | 310 | 19,000 | Lubricated | -10° to 200° | ABEC-1 | 0000000 | 00000 |
Food Industry Permanently Lubricated Stainless Steel Ball Bearings
Good for applications with incidental food contact, these 440C stainless steel bearings have a food-grade, solid polymer lubricant between the balls and ring that eliminates the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than 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 | Specifications Met | Each | |
Open | |||||||||||||
R10 | 5/8" | 1 3/8" | 9/32" | 440C Stainless Steel | 1,100 | 580 | 12,000 | Lubricated | -20° to 210° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 000000 | 000000 |
Sealed | |||||||||||||
R4A-2RS | 1/4" | 3/4" | 9/32" | 440C Stainless Steel | 440 | 160 | 24,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 0000000 | 00000 |
R6-2RS | 3/8" | 7/8" | 9/32" | 440C Stainless Steel | 630 | 250 | 19,000 | Lubricated | -20° to 210° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 0000000 | 00000 |
Ultra-Corrosion-Resistant Stainless Steel Ball Bearings
These 316 stainless steel bearings are more corrosion resistant than our other stainless steel bearings, but they have a lower load capacity.
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 | ||||||||||||
R4A | 1/4" | 3/4" | 9/32" | 316 Stainless Steel | 75 | 50 | 2,300 | Required | -40° to 140° | Not Rated | 00000000 | 000000 |
R6 | 3/8" | 7/8" | 9/32" | 316 Stainless Steel | 120 | 95 | 1,600 | Required | -40° to 140° | Not Rated | 0000000 | 00000 |
Plastic Ball Bearings
These acetal bearings have good all-around corrosion and chemical resistance.
316 stainless steel balls have excellent corrosion resistance.
Glass balls have even more corrosion resistance than stainless steel balls.
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 | |
316 Stainless Steel Ball | ||||||||||||
Open | ||||||||||||
R4A | 1/4" | 3/4" | 9/32" | Acetal Plastic | 25 | 15 | 2,300 | Not Required | -40° to 180° | Not Rated | 0000000 | 00000 |
R6A | 3/8" | 7/8" | 9/32" | Acetal Plastic | 40 | 30 | 1,600 | Not Required | -40° to 180° | Not Rated | 000000 | 0000 |
Glass Ball | ||||||||||||
Open | ||||||||||||
R4A | 1/4" | 3/4" | 9/32" | Acetal Plastic | 25 | 15 | 2,300 | Not Required | -40° to 180° | Not Rated | 0000000 | 0000 |
R6A | 3/8" | 7/8" | 9/32" | Acetal Plastic | 40 | 30 | 1,600 | Not Required | -40° to 180° | Not Rated | 000000 | 00000 |
Water-Resistant Plastic Ball Bearings
Made of PVDF, these bearings resist moisture absorption, so they won’t warp in underwater applications. They also have excellent chemical and corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | 316 Stainless Steel Ball | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||||
R4A | 1/4" | 3/4" | 9/32" | PVDF Plastic | 25 | 15 | 2,300 | Not Required | -40° to 180° | Not Rated | 0000000 | 000000 |
R6A | 3/8" | 7/8" | 9/32" | PVDF Plastic | 40 | 30 | 1,600 | Not Required | -40° to 180° | Not Rated | 0000000 | 00000 |
Lubrication-Free Plastic Flanged Ball Bearings
Install these acetal bearings in caustic environments and where lubrication can’t be used. They have good all-around corrosion and chemical resistance. The flange ensures proper positioning inside a tube or housing.
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 | ||||||||||||||
R6A | 3/8" | 7/8" | 9/32" | 0.965" | 0.06" | Acetal Plastic | 40 | 30 | 1,600 | Not Required | -40° to 180° | Not Rated | 000000 | 000000 |
Self-Aligning Flanged Ball Bearings
No need to worry about precisely aligning these bearings—they swivel to compensate for up to 5° of shaft misalignment. The flange ensures proper positioning inside a tube or housing.
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.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
Stainless steel bearings are more corrosion resistant than steel bearings.
For technical drawings and 3-D models, click on a part number.
Flange | Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | Misalignment Capability | Temp. Range, °F | ABEC Rating | Each | |
Open | |||||||||||||
Steel | |||||||||||||
3/16" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 000000 |
1/4" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
5/16" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
440C Stainless Steel | |||||||||||||
1/4" | 5/8" | 9/32" | 0.69" | 0.03" | 55 | 20 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
5/16" | 5/8" | 9/32" | 0.69" | 0.03" | 55 | 20 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
Shielded | |||||||||||||
Steel | |||||||||||||
3/16" | 5/8" | 9/32" | 0.69" | 0.03" | 120 | 60 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 000000 | 00000 |
1/4" | 5/8" | 9/32" | 0.69" | 0.03" | 120 | 60 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 000000 | 00000 |
5/16" | 5/8" | 9/32" | 0.69" | 0.03" | 120 | 60 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 000000 | 00000 |
440C Stainless Steel | |||||||||||||
1/4" | 5/8" | 9/32" | 0.69" | 0.03" | 55 | 20 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
5/16" | 5/8" | 9/32" | 0.69" | 0.03" | 55 | 20 | 40,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
Sealed | |||||||||||||
Steel | |||||||||||||
1/8" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 20,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
3/16" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 20,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
1/4" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 20,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
5/16" | 5/8" | 9/32" | 0.69" | 0.03" | 65 | 25 | 20,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
440C Stainless Steel | |||||||||||||
1/4" | 5/8" | 9/32" | 0.69" | 0.03" | 55 | 20 | 20,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
5/16" | 5/8" | 9/32" | 0.69" | 0.03" | 55 | 20 | 20,000 | Lubricated | 5° | -30° to 250° | ABEC-3 | 00000000 | 00000 |
High-Temperature Ball Bearings
Made with either PEEK or graphite, these ball bearings work in applications that are too hot for most other ball bearings.
PEEK bearings handle temperatures almost twice as high as that of our other plastic ball bearings. They also have good chemical resistance and excellent corrosion resistance.
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 | ||||||||||||
PEEK Plastic Cage—316 Stainless Steel Ball | ||||||||||||
R4A | 1/4" | 3/4" | 9/32" | PEEK Plastic | 30 | 20 | 2,800 | Not Required | -40° to 330° | Not Rated | 0000000 | 000000 |
R6A | 3/8" | 7/8" | 9/32" | PEEK Plastic | 50 | 35 | 1,900 | Not Required | -40° to 330° | Not Rated | 0000000 | 00000 |
Clamping Acme Lead Screw Collars
Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance. 303 stainless steel collars have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Two-Piece Clamping Acme Lead Screw Collars
Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Thread Size | OD | Wd. | No. of Thread Starts | Hardness | Each | |
Right-Hand Threaded | ||||||
---|---|---|---|---|---|---|
Black-Oxide 1215 Carbon Steel | ||||||
1/4"-16 | 5/8" | 9/32" | 1 | Brinell 167 | 0000000 | 000000 |
Bearing Retaining Locknuts
With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.
When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as stainless steel locknuts. 303 stainless steel locknuts resist corrosion better than steel locknuts but aren’t as strong. They withstand washdowns and chemicals.
For technical drawings and 3-D models, click on a part number.