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 Linear Bearings
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High-Load Linear Ball Bearings for Support Rail Shafts
Designed for heavy loads, these bearings have higher load capacities than comparable standard linear ball bearings for support rails. Use them for applications that require maximum rigidity. All are self-aligning to compensate for shaft misalignment. To install, slide bearings into a housing (not included). For bearings with retaining ring grooves, secure with two retaining rings (sold individually).
Bearings with end seals keep lubricants in and dirt out.
Bearings with stainless steel balls are more corrosion resistant than bearings with steel balls.
For technical drawings and 3-D models, click on a part number.
Bearings | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Load Capacity, lbs. | External Retaining Rings | |||||||||||||
| For Shaft Dia. | Overall Lg. | Wd. | For Housing ID | With Retaining Ring Grooves | Retaining Ring Groove End-to-End Lg. | With End Seals | Dynamic | Static | Max. Temperature, ° F | For Shaft Material | Each | Each | ||
Acetal Plastic Bearings with Stainless Steel Balls | ||||||||||||||
| 3/4" | 1 5/8" | 13/32" | 1.2500" - 1.2505" | Yes | 1.285" | Yes | 790 | Not Rated | 176° | Stainless Steel, Steel | 0000000 | 0000000 | 0000000 | 00000 |
Acetal Plastic Bearings with Steel Balls | ||||||||||||||
| 3/4" | 1 5/8" | 13/32" | 1.2500" - 1.2505" | Yes | 1.285" | Yes | 1,100 | Not Rated | 176° | Stainless Steel, Steel | 0000000 | 00000 | 0000000 | 0000 |
High-Load Mounted Linear Ball Bearings for Support Rail Shafts
Designed to handle heavy loads, these bearings have higher load capacities than comparable standard mounted linear ball bearings for support rails. Use them for applications that require maximum rigidity. All are self-aligning to compensate for shaft misalignment and have end seals to keep lubricant in and dirt out.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Lg. | Wd. | Ht. | Center Ht. | Wd. | Dynamic Load Capacity, lbs. | Max. Temperature, °F | For Shaft Material | No. of | Dia. | Each | |
Acetal Bearings with Steel Balls in 6061 Aluminum Housing | ||||||||||||
| 3/4" | 1 7/8" | 2 3/4" | 1 9/16" | 15/16" | 13/32" | 1,100 | 185° | Steel, Stainless Steel | 4 | 3/16" | 0000000 | 0000000 |
| 3/4" | 4 1/2" | 2 3/4" | 1 9/16" | 15/16" | 13/32" | 2,200 | 185° | Steel, Stainless Steel | 4 | 3/16" | 0000000 | 000000 |
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.
303 stainless steel collars have good 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 | ||||||
|---|---|---|---|---|---|---|
303 Stainless Steel | ||||||
| 1/2"-10 | 1 1/8" | 13/32" | 1 | Brinell 228 | 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 | |||||||||
| 0.664"-32 | Extra Fine | 1 1/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 0000000 |
| 0.781"-32 | Extra Fine | 1 3/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
303 Stainless Steel | |||||||||
Chamfered Face | |||||||||
| 0.664"-32 | Extra Fine | 1 1/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
| 0.781"-32 | Extra Fine | 1 3/8" | 13/32" | 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 | |||||||||||
| 0.969"-32 | Extra Fine | 1 9/16" | 13/32" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 00000000 | 00000 | 000000000 | 00000 | 00000000 | 0000000 |
| 1.173"-18 | Extra Fine | 1 3/4" | 13/32" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 00000000 | 0000 | 000000000 | 0000 | 00000000 | 000000 |
303 Stainless Steel | |||||||||||
Chamfered Face | |||||||||||
| 0.969"-32 | Extra Fine | 1 9/16" | 13/32" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 0000000 | 00000 | 000000000 | 0000 | 00000000 | 000000 |
| 1.173"-18 | Extra Fine | 1 3/4" | 13/32" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 0000000 | 00000 | 000000000 | 00000 | 00000000 | 000000 |