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 Needle-Roller Bearings
Install these bearings directly onto hardened and ground shafts. They have higher load capacity, speed, and accuracy than standard needle-roller bearings.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants.
Shaft liners allow you to use the bearing on unhardened and unground shafts.
For technical drawings and 3-D models, click on a part number.
Bearings | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Radial Load Cap., lbs. | Optional Shaft Liners | |||||||||||||
| For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range., °F | Each | For Shaft Dia. | Each | ||
Open | ||||||||||||||
| 1 1/2" | 2 1/16" | 1" | Steel | 8,100 | 16,000 | 9,000 | Required | 16 | 0° to 245° | 0000000 | 000000 | 1 1/4" | 000000 | 000000 |
Sealed | ||||||||||||||
| 1 1/2" | 2 1/16" | 1 1/4" | Steel | 10,300 | 15,500 | 2,500 | Lubricated | 12 | -30° to 250° | 0000000 | 00000 | 1 1/4" | 0000000 | 00000 |
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 | Each | |
Steel Rollers | ||||||||||
Open | ||||||||||
| 1 3/8" | 2 1/16" | 5/64" | 4,600 | 21,600 | 5,500 | Required | 0.2 | 0° to 240° | 0000000 | 00000 |
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 1/4"-5 | 2 1/16" | 1/2" | 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.
Locknuts | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Thread | Spanner Sockets | ||||||||
| Size | Spacing | OD | Wd. | Insert Max. Temp., °F | Specifications Met | Each | Each | ||
Carbon Steel | |||||||||
Chamfered Face | |||||||||
| 1.312"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 00000000 | 0000000 |
| 1.376"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
303 Stainless Steel | |||||||||
Chamfered Face | |||||||||
| 1.312"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
| 1.376"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 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.
Carbon steel retaining nuts are strong and resist wear.
303 stainless steel retaining nuts resist corrosion better than steel. They also withstand washdowns and chemicals.
For technical drawings and 3-D models, click on a part number.
Nuts | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Thread | Optional Washers | Spanner Sockets | |||||||||
| Size | Spacing | OD | Wd. | Specifications Met | For Lock Washer Specifications Met | Each | Each | Each | |||
Carbon Steel | |||||||||||
Chamfered Face | |||||||||||
| 1.312"-18 | Extra Fine | 2 1/16" | 7/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 00000000 | 00000 | 000000000 | 00000 | 00000000 | 0000000 |
| 1.376"-18 | Extra Fine | 2 1/16" | 7/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 00000000 | 0000 | 000000000 | 0000 | 00000000 | 000000 |
303 Stainless Steel | |||||||||||
Chamfered Face | |||||||||||
| 1.376"-18 | Extra Fine | 2 1/16" | 7/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 0000000 | 00000 | 000000000 | 00000 | 00000000 | 000000 |