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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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 | ||||||||||||
6318-2Z | 90 | 190 | 43 | Steel | 33,900 | 24,250 | 3,800 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
Sealed | ||||||||||||
6318-2RS | 90 | 190 | 43 | Steel | 33,900 | 24,250 | 2,400 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
Needle-Roller Thrust Bearings
Thinner rollers allow these bearings to fit in tighter spaces than tapered-roller thrust bearings. Because of the large contact area between the rollers and washers (not included), these bearings are great for medium to heavy duty, low-friction jobs. For use on hardened and ground surfaces.
Washers allow you to use the bearing on unhardened and unground surfaces.
For technical drawings and 3-D models, click on a part number.
Thrust Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microns | Temp. Range, °F | Specifications Met | Each | |
Steel Rollers | |||||||||||
Open | |||||||||||
150mm | 190mm | 5mm | 32,100 | 215,800 | 1,680 | Required | 0.2 | 0° to 240° | DIN 5405-3, ISO 303 | 00000000 | 0000000 |
For Shaft Dia. | OD | Thick. | Washer Material | Specifications Met | Each | |
150mm | 190mm | 1mm | Steel | DIN 5405-3, ISO 303 | 00000000 | 0000000 |
Washers for Needle-Roller Thrust Bearings
Adapt needle-roller thrust bearings to use on unhardened, unground surfaces.
For technical drawings and 3-D models, click on a part number.
For Shaft Dia. | OD | Thick. | Washer Material | Specifications Met | Each | |
150mm | 190mm | 1mm | Steel | DIN 5405-3, ISO 303 | 00000000 | 0000000 |
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.