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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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 | ||||||||||||
6024-2Z | 120 | 180 | 28 | Steel | 19,850 | 17,950 | 3,800 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
6217-2Z | 85 | 150 | 28 | Steel | 19,550 | 14,350 | 4,500 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
Sealed | ||||||||||||
6024-2RS | 120 | 180 | 28 | Steel | 19,850 | 17,950 | 2,800 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 00000000 |
6217-2RS | 85 | 150 | 28 | Steel | 19,550 | 14,350 | 2,800 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 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.
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 | |||||||||||||
2212 | 60 | 110 | 28 | Steel | 7,600 | 2,800 | 5,300 | Required | 4° | Not Rated | ABEC-1 | 00000000 | 0000000 |
Clamp-On Collar Ball Bearings
Quickly secure these bearings onto shafts with the clamp-on collar for a concentric, mar-free hold. Tighten the single screw on the locking collar around its inner ring on your shaft to center and secure the shaft in the bearing bore. The collar’s firm grip reduces vibration and noise in your system. The steel rings on these bearings have a black-oxide finish for some corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | |||||||||||||||
Black-Oxide Steel Ring | |||||||||||||||
ER208 | 40mm | 80mm | 28mm | 52mm | 49mm | 88mm | 1.6mm | 7,300 | 4,450 | 4,150 | Lubricated | -20° to 220° | ABEC-1 | 0000000 | 0000000 |
ER209 | 45mm | 85mm | 28mm | 58mm | 49mm | 91mm | 1.6mm | 7,900 | 5,100 | 3,800 | Lubricated | -20° to 220° | ABEC-1 | 0000000 | 000000 |
High-Load Face-Mount Crossed-Roller Bearings
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 | |||||||||||
115 | 240 | 28 | Steel | 18,950 | 31,000 | 400 | Required | 0° to 230° | Lubrication Groove, Two Lubrication Holes | 0000000 | 0000000 |
Sealed | |||||||||||
115 | 240 | 28 | Steel | 18,950 | 31,000 | 300 | Lubricated | 0° to 210° | Lubrication Groove, Two Lubrication Holes | 0000000 | 00000000 |
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 | |||||||||||
60 | 110 | 28 | 22212 | Steel | 40,000 | 39,100 | 4,800 | Required | 390 | 000000 | 0000000 |
Metric Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction, size, pitch, and number of thread starts. Class 7e and 7H components are compatible.
360 brass components have excellent machinability and good 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.
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
Thread Size | Thread Pitch, mm | Ht., mm | Wd., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Hardness | Each | |
360 Brass | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
M16 | 4 | 35 | 28 | 1 | 1:1 | 4 | 7H | Not Rated | 000000000 | 000000 |
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.
Thread | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Spacing | OD | Wd., mm | Specifications Met | For Lock Washer Specifications Met | Each | |
Carbon Steel | ||||||||
Chamfered Face | ||||||||
M190 | 3 | Extra Fine | 240mm | 28 | DIN 981, ISO 2982 | DIN 5406 | 0000000 | 0000000 |