Selecting Compatible Lead Screws and Nuts
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About Shafts
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Thread-Mount Idler Rotary Shafts
Thread these shafts into a tapped hole to support idler sprockets and pulleys in tensioning applications.
Shafts with a shaft collar come with a grease fitting for easy lubrication of your pulleys and sprockets. Adjust the collar to the width of your component.
For technical drawings and 3-D models, click on a part number.
Overall | Thread | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Lg. | Dia. | Size | Lg. | Edge Type | Fabrication | Hardness Rating | Hardness | Each | |
Inch with Shaft Collar—1215 Carbon Steel | |||||||||||
| 1/2" | 1 1/16" | 2 9/32" | 1" | 3/8"-16 | 7/16" | Chamfered | Hardened | Very Hard | Rockwell C58 | 00000000 | 000000 |
| 5/8" | 1 1/4" | 3 3/8" | 1 1/8" | 1/2"-20 | 7/8" | Chamfered | Hardened | Very Hard | Rockwell C58 | 00000000 | 00000 |
| 3/4" | 2 7/16" | 4 3/8" | 1 1/4" | 1/2"-20 | 7/8" | Chamfered | Hardened | Very Hard | Rockwell C58 | 00000000 | 00000 |
| 1" | 1 1/2" | 3 3/8" | 1 1/2" | 3/4"-16 | 7/8" | Chamfered | Hardened | Very Hard | Rockwell C58 | 000000 | 00000 |
| 1" | 2 1/2" | 4 3/8" | 1 1/2" | 3/4"-16 | 7/8" | Chamfered | Hardened | Very Hard | Rockwell C58 | 000000 | 00000 |
| 1" | 3 1/2" | 5 3/8" | 1 1/2" | 3/4"-16 | 7/8" | Chamfered | Hardened | Very Hard | Rockwell C58 | 000000 | 00000 |
| 1 1/2" | 3 1/4" | 5 11/16" | 2 1/4" | 1"-14 | 1 5/16" | Chamfered | Hardened | Very Hard | Rockwell C58 | 00000000 | 00000 |
| 1 1/2" | 5 1/4" | 7 11/16" | 2 1/4" | 1"-14 | 1 5/16" | Chamfered | Hardened | Very Hard | Rockwell C58 | 00000000 | 00000 |
Hollow Linear Motion Shafts
Lighter than solid shafts, hollow shafts reduce your total system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center. These shafts are smooth, hard, and wear resistant, so they work with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. The exterior of these shafts is turned, ground, and polished to tight diameter and straightness tolerances. The interior is unfinished.
These shafts are hardened on the surface, so they stand up to repeated motion. All have chamfered ends to remove sharp edges and reduce damage to bearings, housings, and other components during installation.
Alloy steel shafts are stronger and more wear resistant than carbon steel shafts.
Surface smoothness—The lower the microinch value, the smoother the finish and the less friction and wear it will cause on the bearing.
For technical drawings and 3-D models, click on a part number.
| Lg. | Lg. Tolerance | Dia. Tolerance | ID Tolerance | Surface Smoothness, microinch | Hardness Rating | Hardness | Each | |
Inch—52100 Alloy Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
3/4" Dia. (0.438" ID) | ||||||||
| __ | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 00000000 | 00 |
| 12" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 18" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 0000000 | 00000 |
| 24" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 36" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 48" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 60" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.0219" to 0.0219" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
1" Dia. (0.599" ID) | ||||||||
| __ | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 00000000 | 00 |
| 12" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 0000000 | 00000 |
| 18" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 24" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 36" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 48" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 60" | -0.03" to 0.03" | -0.001" to -0.0005" | -0.03" to 0.03" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
1 1/2" Dia. (0.89" ID) | ||||||||
| __ | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 00000000 | 00 |
| 12" | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 0000000 | 00000 |
| 18" | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 24" | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 36" | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 48" | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 60" | -0.03" to 0.03" | -0.0011" to -0.0006" | -0.0445" to 0.0445" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
2" Dia. (1 1/4" ID) | ||||||||
| __ | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 00000000 | 00 |
| 12" | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 18" | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 24" | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 36" | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 48" | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
| 60" | -0.06" to 0.06" | -0.0013" to -0.0006" | -0.0625" to 0.0625" | 8 | Very Hard | Rockwell C58 | 0000000 | 000000 |
Ball Screw/Splines and Bearings
From one compact system, transmit linear or rotary motion or both at once (sometimes called spiral motion). Because of these different motions, these ball screw/splines and bearings create efficient, fluid movements in complex automated applications, such as pick-and-place robots.
The ball bearings move smoothly and precisely, even at high speeds. They're powered independently, so you can drive one bearing at a time or both together to coordinate movements.
The ball screw/splines are hardened on the surface, so they stand up to repeated motion. They’re also hollow, so you can run electrical wiring, compressed air tubing, coolants, or lubricant through their center.
For technical drawings and 3-D models, click on a part number.
Spline | Thread | Ball Screw Bearing | Ball Spline Bearing | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | No. of | Lg. | Direction | ID, mm | Lg., mm | Root Dia., mm | OD, mm | Overall Lg., mm | Dynamic Load Cap., lbs. | Static Load Cap., lbs. | OD, mm | Overall Lg., mm | Dynamic Load Cap., lbs. | Static Load Cap., lbs. | Max. Dynamic Torque, in.-lbs. | Temp. Range, ° F | Each | |
Metric—1055 Carbon Steel | ||||||||||||||||||
8mm Dia. (Tolerance: -0.015mm to 0mm) | ||||||||||||||||||
| 200 mm | 4 | 180 mm | Right Hand | 3 | 200 | 7.44 | 19 | 28.5 | 240 | 400 | 16 | 25 | 330 | 580 | 17 | 5° to 176° | 0000000 | 000000000 |
10mm Dia. (Tolerance: -0.015mm to 0mm) | ||||||||||||||||||
| 300 mm | 4 | 270 mm | Right Hand | 4 | 300 | 9.27 | 23 | 34.5 | 380 | 600 | 21 | 33 | 600 | 1,100 | 34 | 5° to 176° | 0000000 | 00000000 |
16mm Dia. (Tolerance: -0.018mm to 0mm) | ||||||||||||||||||
| 500 mm | 6 | 360 mm | Right Hand | 11 | 500 | 15.15 | 32 | 40 | 870 | 1,610 | 31 | 50 | 1,590 | 2,830 | 277 | 5° to 176° | 0000000 | 00000000 |
Ball Screws and Nuts
Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread direction and size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
For technical drawings and 3-D models, click on a part number.
Root diameter indicates the diameter the ball screw will be after machining away the threads.
Ball Screw | Flange Ball Nut | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg., mm | Root Dia., mm | Tensile Strength, psi | Lg., mm | Dia., mm | Length Tolerance | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Dynamic Thrust Load Capacity, lbs. | Max. Backlash, mm | Temp. Range, °F | Each | |
Carbon Steel Ball Screw with Alloy Steel Flange Ball Nut | |||||||||||||||
| M6 | 150 | 5.3 | 21,000 | 21 | 13 | Plus | 1 | 1 | ±0.210 mm per 300 mm | Rockwell C58 | 150 | 0.05 | 5° to 175° | 0000000 | 0000000 |
| M6 | 250 | 5.3 | 21,000 | 21 | 13 | Plus | 1 | 1 | ±0.210 mm per 300 mm | Rockwell C58 | 150 | 0.05 | 5° to 175° | 000000 | 000000 |
| M8 | 150 | 6.6 | 21,000 | 28 | 20 | Plus | 1 | 2 | ±0.210 mm per 300 mm | Rockwell C58 | 470 | 0.05 | 5° to 175° | 0000000 | 000000 |
| M8 | 250 | 6.6 | 21,000 | 28 | 20 | Plus | 1 | 2 | ±0.210 mm per 300 mm | Rockwell C58 | 470 | 0.05 | 5° to 175° | 000000 | 000000 |
| M10 | 200 | 8.6 | 21,000 | 28 | 23 | Plus | 1 | 2 | ±0.210 mm per 300 mm | Rockwell C58 | 510 | 0.05 | 5° to 175° | 0000000 | 000000 |
| M10 | 300 | 8.6 | 21,000 | 28 | 23 | Plus | 1 | 2 | ±0.210 mm per 300 mm | Rockwell C58 | 510 | 0.05 | 5° to 175° | 000000 | 000000 |
| M12 | 200 | 10.6 | 21,000 | 30 | 25 | Plus | 1 | 2 | ±0.210 mm per 300 mm | Rockwell C58 | 560 | 0.05 | 5° to 175° | 000000 | 000000 |
| M12 | 300 | 10.6 | 21,000 | 30 | 25 | Plus | 1 | 2 | ±0.210 mm per 300 mm | Rockwell C58 | 560 | 0.05 | 5° to 175° | 0000000 | 000000 |
Root diameter indicates the diameter the ball screw will be after machining away the threads.
| Thread Size | Lg. | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Root Dia. | Hardness | Tensile Strength, psi | Temp. Range, °F | Each | |
Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M14 | 500 mm | 1 | 4mm | ±0.210 mm per 300 mm | 11.5mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| M14 | 1,000 mm | 1 | 4mm | ±0.210 mm per 300 mm | 11.5mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| M16 | 500 mm | 1 | 5mm | ±0.210 mm per 300 mm | 13.5mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| M16 | 1,000 mm | 1 | 5mm | ±0.210 mm per 300 mm | 13.5mm | Rockwell C58 | 21,000 | 5° to 175° | 000000 | 000000 |
| M20 | 500 mm | 1 | 5mm | ±0.210 mm per 300 mm | 17.2mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| M20 | 1,000 mm | 1 | 5mm | ±0.210 mm per 300 mm | 17.2mm | Rockwell C58 | 21,000 | 5° to 175° | 000000 | 000000 |
| M20 | 1,500 mm | 1 | 10mm | ±0.210 mm per 300 mm | 16.4mm | Rockwell C58 | 21,000 | 5° to 175° | 000000 | 000000 |
| M25 | 500 mm | 1 | 5mm | ±0.210 mm per 300 mm | 22.2mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| M25 | 1,000 mm | 1 | 5mm | ±0.210 mm per 300 mm | 22.2mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| M25 | 1,500 mm | 1 | 10mm | ±0.210 mm per 300 mm | 20.2mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
| Thread Size | Lg., mm | Wd., mm | Ht., mm | Center Ht., mm | No. of Thread Starts | Travel Distance per Turn, mm | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash, mm | Temp. Range, °F | Each | |
Alloy Steel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M14 | 35 | 34 | 30 | 13 | 1 | 4 | Rockwell C58 | 1,200 | 0.1 | 5° to 175° | 0000000 | 0000000 |
| M16 | 36 | 42 | 32.5 | 16 | 1 | 5 | Rockwell C58 | 1,200 | 0.1 | 5° to 175° | 0000000 | 000000 |
| M20 | 35 | 48 | 39 | 17 | 1 | 5 | Rockwell C58 | 1,300 | 0.1 | 5° to 175° | 0000000 | 000000 |
| M20 | 58 | 48 | 46 | 18 | 1 | 10 | Rockwell C58 | 2,350 | 0.1 | 5° to 175° | 0000000 | 000000 |
| M25 | 35 | 60 | 45 | 20 | 1 | 5 | Rockwell C58 | 1,500 | 0.1 | 5° to 175° | 0000000 | 000000 |
| M25 | 94 | 60 | 55 | 23 | 1 | 10 | Rockwell C58 | 7,000 | 0.1 | 5° to 175° | 0000000 | 000000 |
Flange | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Travel Distance per Turn | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Each | ||
Alloy Steel | |||||||||||||
| C | M14 | 40mm | 31mm | 50mm | 37mm | 10mm | 1 | 4mm | Rockwell C58 | 1,200 | 0.1mm | 0000000 | 0000000 |
| C | M16 | 40mm | 34mm | 54mm | 40mm | 10mm | 1 | 5mm | Rockwell C58 | 1,200 | 0.1mm | 0000000 | 000000 |
| C | M20 | 40mm | 40mm | 60mm | 46mm | 10mm | 1 | 5mm | Rockwell C58 | 1,300 | 0.1mm | 0000000 | 000000 |
| C | M20 | 64mm | 52mm | 82mm | 64mm | 12mm | 1 | 10mm | Rockwell C58 | 2,350 | 0.1mm | 0000000 | 000000 |
| C | M25 | 40mm | 43mm | 67mm | 50mm | 10mm | 1 | 5mm | Rockwell C58 | 1,500 | 0.1mm | 0000000 | 000000 |
| C | M25 | 98mm | 60mm | 96mm | 72mm | 15mm | 1 | 10mm | Rockwell C58 | 7,000 | 0.1mm | 0000000 | 000000 |