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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About Ball and Roller Bearings
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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 | Specifications Met | Each | |
6312 | 60mm | 130mm | 31mm | Steel | 18,300 | 11,600 | 7,900 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
Radial Load Cap., lbs. | |||||||||||||
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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 | |
6017-2Z | 85mm | 130mm | 22mm | Steel | 11,900 | 9,650 | 6,100 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 0000000 |
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 | |
6017-2RS | 85mm | 130mm | 22mm | Steel | 11,900 | 9,650 | 2,700 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 0000000 |
6312-2RS | 60mm | 130mm | 31mm | Steel | 18,300 | 11,600 | 3,300 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 00000 |
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 | ||||||||||||
6312 | 60mm | 130mm | 31mm | Steel | 14,150 | 10,800 | 3,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 0000000 |
Sealed | ||||||||||||
6017-2RS | 85mm | 130mm | 22mm | Steel | 8,500 | 7,500 | 2,700 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
6312-2RS | 60mm | 130mm | 31mm | Steel | 14,150 | 10,800 | 3,100 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
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 | ||||||||||||
6017-2Z | 85 | 130 | 22 | Steel | 11,650 | 9,650 | 5,300 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
6215-2Z | 75 | 130 | 25 | Steel | 15,450 | 11,000 | 5,300 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
6312-2Z | 60 | 130 | 31 | Steel | 19,150 | 11,650 | 5,600 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
Sealed | ||||||||||||
6017-2RS | 85 | 130 | 22 | Steel | 11,650 | 9,650 | 3,200 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
6215-2RS | 75 | 130 | 25 | Steel | 15,450 | 11,000 | 3,200 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
6312-2RS | 60 | 130 | 31 | Steel | 19,150 | 11,650 | 3,400 | Lubricated | -30° to 210° | ABEC-3 | 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 | |
6215-2RS | 75mm | 130mm | 25mm | 440C Stainless Steel | 14,900 | 11,100 | 4,800 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 0000000 |
6312-2RS | 60mm | 130mm | 31mm | 440C Stainless Steel | 18,400 | 11,700 | 3,400 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 000000 |
High-Load Crossed-Roller Bearings
The thicker inner and outer raceways on these bearings can handle heavier loads than the thin-profile crossed-roller bearings. The rollers face in alternating directions to allow for rigid, accurate motion under any combination of radial, thrust, and moment (twisting) loads. Use in applications where highly accurate motion is necessary, such as machine tools and industrial robots.
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.
Combined Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Features | Each | |
Open | |||||||||||
90 | 130 | 16 | Steel | 7,400 | 10,500 | 680 | Required | 0° to 245° | __ | 0000000 | 0000000 |
Sealed | |||||||||||
90 | 130 | 16 | Steel | 7,400 | 10,500 | 540 | Lubricated | 0° to 245° | Lubrication Groove, Two Lubrication Holes | 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 | |||||||||||
75 | 130 | 31 | 22215 | Steel | 53,500 | 54,750 | 4,000 | Required | 390 | 0000000 | 0000000 |
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. Zinc-plated steel locknuts resist rusting from some moisture, but you shouldn’t use them with salt water or chemicals.
For technical drawings and 3-D models, click on a part number.
Bearing Retaining Nuts
Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.
Chamfered-face retaining nuts weigh less and produce less heat than stepped-face nuts. Some meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.
Carbon steel retaining nuts are strong and resist wear.
For technical drawings and 3-D models, click on a part number.