About Ball and Roller Bearings
More
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.
More
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 | Specifications Met | Each | |
6308 | 40mm | 90mm | 23mm | Steel | 9,550 | 5,600 | 10,800 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 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 | Specifications Met | Each | |
6308-2Z | 40mm | 90mm | 23mm | Steel | 9,550 | 5,600 | 7,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 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 | Specifications Met | Each | |
6308-2RS | 40mm | 90mm | 23mm | Steel | 9,550 | 5,600 | 4,800 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 000000 |
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 | ||||||||||||
6308 | 40mm | 90mm | 23mm | Steel | 7,050 | 5,050 | 4,600 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
Sealed | ||||||||||||
6308-2RS | 40mm | 90mm | 23mm | Steel | 7,050 | 5,050 | 4,600 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
Precision Ball Bearings
For greater accuracy and higher speeds, these bearings are made to tighter tolerances than standard ball bearings.
Shielded bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||
6213-2Z | 65 | 120 | 23 | Steel | 13,150 | 9,100 | 6,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
6308-2Z | 40 | 90 | 23 | Steel | 9,500 | 5,350 | 8,500 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
Sealed | ||||||||||||
6213-2RS | 65 | 120 | 23 | Steel | 13,150 | 9,100 | 3,600 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
6308-2RS | 40 | 90 | 23 | Steel | 9,500 | 5,350 | 5,000 | Lubricated | -30° to 210° | ABEC-3 | 00000000 | 000000 |
Self-Aligning Ball Bearings
With a spherical raceway and two rows of balls, these bearings compensate for shaft misalignment.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Misalignment Capability | Temp. Range, °F | ABEC Rating | Each | |
Open | |||||||||||||
1308 | 40 | 90 | 23 | Steel | 6,650 | 2,150 | 6,700 | Required | 4° | Not Rated | ABEC-1 | 00000000 | 0000000 |
2207 | 35 | 72 | 23 | Steel | 6,750 | 1,950 | 12,000 | Lubricated | 2.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
2208 | 40 | 80 | 23 | Steel | 7,150 | 2,200 | 11,000 | Lubricated | 2.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
Sealed | |||||||||||||
2207-2RS | 35 | 72 | 23 | Steel | 4,250 | 1,300 | 6,300 | Lubricated | 1.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
2208-2RS | 40 | 80 | 23 | Steel | 4,450 | 1,550 | 5,600 | Lubricated | 1.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
Electrically Insulated Ball Bearings
Good for use in electric motors and power generators, these bearings have ceramic balls that insulate against stray current to prevent damage to the bearing. The ceramic balls generate less heat than steel balls, so they require lubrication less frequently.
Shielded bearings block out dust and other contaminants.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||
6308-2Z | 40 | 90 | 23 | Steel | 11,400 | 6,900 | 11,000 | Lubricated | -20° to 245° | ABEC-1 | 0000000 | 0000000 |
Tapered Bore Self-Aligning Ball Bearings
For use on tapered shafts and round shafts with adapter sleeves, these ball-bearings have a spherical raceway to compensate for shaft misalignment.
For technical drawings and 3-D models, click on a part number.
Radial Load Capacity | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Diameter, mm | For Housing ID, mm | Width, mm | Ring Material | Dynamic | Static, lbs. | Maximum Speed, rpm | Lubrication | Misalignment Capability | Maximum Temperature, °F | Rate of Taper | ABEC Rating | Each | |
Open | ||||||||||||||
2208K | 40 | 80 | 23 | Steel | 5,000 | 1,650 | 7,500 | Required | 4° | 240° | 1:12 | ABEC-1 | 0000000 | 0000000 |
2209K | 45 | 85 | 23 | Steel | 5,200 | 1,800 | 7,100 | Required | 4° | 240° | 1:12 | ABEC-1 | 0000000 | 000000 |
Stainless Steel Ball Bearings
Bearings are 440C stainless steel for good corrosion resistance.
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 | |
6213-2RS | 65mm | 120mm | 23mm | 440C Stainless Steel | 12,900 | 9,000 | 3,500 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 0000000 |
Angular-Contact Thrust Ball Bearings
Single-row bearings handle thrust loads on one side. For applications with thrust loads on both sides, mount them in pairs.
Open bearings dissipate heat more efficiently than shielded and sealed 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.
Combined Load Cap., lbs. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
Single Row | ||||||||||||||
Open | ||||||||||||||
7308 | 40 | 90 | 23 | Steel | 10,300 | 6,850 | 9,000 | Required | 40° | -20° to 230° | ABEC-3 | __ | 0000000 | 0000000 |
Sealed | ||||||||||||||
7308-2RS | 40 | 90 | 23 | Steel | 11,900 | 7,750 | 4,500 | Lubricated | 40° | -20° to 230° | ABEC-1 | DIN 628-1 | 0000000 | 000000 |
Spherical-Roller Bearings
Two rows of rollers give these bearings dynamic radial load capacities over five times higher than comparably sized tapered-roller bearings. Also known as rock crusher bearings, they handle heavy shock loads and are used for metal milling machinery, mining and oil field equipment, and in paper mills.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Bearing Trade Number | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Max. Temp. Range, °F | Each | |
Open | |||||||||||
35 | 72 | 23 | 22207 | Steel | 15,500 | 15,900 | 5,300 | Required | 390 | 000000 | 0000000 |
40 | 80 | 23 | 22208 | Steel | 25,400 | 22,300 | 6,700 | Required | 390 | 000000 | 000000 |
45 | 85 | 23 | 22209 | Steel | 26,500 | 24,900 | 6,000 | Required | 390 | 000000 | 000000 |
50 | 90 | 23 | 22210 | Steel | 24,500 | 24,000 | 9,800 | Required | 212 | 0000000 | 000000 |
Combination Ball/Needle-Roller Bearings
A built-in thrust ball bearing reduces wear from adjacent shaft components, while the needle rollers support high radial loads. Install anywhere you would use separate bearings for radial and thrust loads.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ball Bearing OD, mm | Ball Bearing Wd., mm | Ring Material | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Each | |
Open | |||||||||||||||
12 | 21 | 23 | 27 | 9 | Steel | 1,650 | 1,900 | 2,170 | 2,490 | 9,000 | Required | 8 | -20° to 230° | 00000000 | 000000 |
15 | 24 | 23 | 29 | 9 | Steel | 2,150 | 2,800 | 2,230 | 2,740 | 8,500 | Required | 8 | -20° to 230° | 00000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Thread | Carbon Steel | |||||||
---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Spacing | OD | Wd., mm | Insert Max. Temp., °F | Specifications Met | Each | |
Chamfered Face | ||||||||
M120 | 2 | Extra Fine | 155mm | 23 | 160° | ISO 2982-2 | 00000000 | 0000000 |