Selecting Compatible Lead Screws and Nuts
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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.
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 | ||
Sealed | ||||||||||||||
| 2 1/4" | 3" | 1 3/4" | Steel | 15,100 | 33,200 | 1,700 | Required | 16 | -30° to 250° | 00000000 | 0000000 | 1 3/4" | 00000000 | 000000 |
| 2 1/2" | 3 1/4" | 1 3/4" | Steel | 15,800 | 36,400 | 1,500 | Required | 16 | -30° to 250° | 00000000 | 000000 | 2" | 00000000 | 00000 |
| 2 3/4" | 3 1/2" | 1 3/4" | Steel | 16,300 | 39,600 | 1,400 | Required | 16 | -30° to 250° | 00000000 | 000000 | __ | 000000 | 00 |
| 3" | 3 3/4" | 1 3/4" | Steel | 17,600 | 44,200 | 1,300 | Required | 16 | -30° to 250° | 00000000 | 000000 | 2 1/2" | 00000000 | 00000 |
Press-Fit Skate Wheels
Create a low-profile conveying surface.
Steel wheels are stronger than nylon.
Nylon wheels are nonmarking and quieter than steel.
For technical drawings and 3-D models, click on a part number.
Wheel | Flange | Bearing | Housing | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Wd. | Projection | Color | Cap., lbs. | Lg. | Wd. | O'all Ht. | Wd. | Lg. | Type | Material | Ball Bearing Material | Material | Color | Temperature Range, °F | Each | |
Steel—Zinc-Plated | |||||||||||||||||
| 1 1/4" | 1 1/4" | 9/16" | __ | 400 | 2" | 2" | 1 9/16" | 1 3/4" | 1 3/4" | Ball | Steel | Steel | Nylon Plastic | Black | -50° to 120° | 0000000 | 000000 |
Nylon Plastic | |||||||||||||||||
| 1 1/4" | 1 1/4" | 9/16" | Black | 400 | 2" | 2" | 1 9/16" | 1 3/4" | 1 3/4" | Ball | Steel | Steel | Nylon Plastic | Black | 0° to 120° | 0000000 | 00000 |
Acme 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, thread size, and number of thread starts.
360 brass components have excellent machinability and good corrosion resistance. 18-8 stainless steel components have good corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Hex nuts fasten and position lead screw components.
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
360 Brass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/8"-5 | 1 1/8" | 1 3/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 000000 |
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 | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
360 Brass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/8"-5 | 1 1/8" | 1 3/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B55 | ASTM B16 | 000000000 | 000000 |