About Shafts
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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.
Carbon steel shafts are strong and good for general purpose use.
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) | ||||||||
| 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) | ||||||||
| 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 | 00000 |
| 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) | ||||||||
| 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) | ||||||||
| 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 |
Metric—1055 Carbon Steel | ||||||||
12mm Dia. (4mm ID) | ||||||||
| 300mm | -0.5mm to 0.5mm | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 1,000mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
16mm Dia. (7mm ID) | ||||||||
| 300mm | -0.5mm to 0.5mm | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 1,000mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
20mm Dia. (14mm ID) | ||||||||
| 300mm | -0.5mm to 0.5mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
25mm Dia. (15.5mm ID) | ||||||||
| 300mm | -0.5mm to 0.5mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
30mm Dia. (18.2mm ID) | ||||||||
| 300mm | -0.5mm to 0.5mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
40mm Dia. (27mm ID) | ||||||||
| 500mm | -0.8mm to 0.8mm | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
Metric—52100 Alloy Steel | ||||||||
6mm Dia. (2mm ID) | ||||||||
| 50mm | -0.5mm to 0.5mm | -0.012mm to -0.004mm | Not Rated | 15 | Very Hard | Rockwell C59 | 00000000 | 00000 |
| 200mm | -0.5mm to 0.5mm | -0.012mm to -0.004mm | Not Rated | 15 | Very Hard | Rockwell C59 | 00000000 | 00000 |
8mm Dia. (3mm ID) | ||||||||
| 100mm | -0.5mm to 0.5mm | -0.014mm to -0.005mm | Not Rated | 15 | Very Hard | Rockwell C59 | 00000000 | 00000 |
10mm Dia. (4mm ID) | ||||||||
| 100mm | -0.5mm to 0.5mm | -0.014mm to -0.005mm | Not Rated | 15 | Very Hard | Rockwell C59 | 00000000 | 00000 |
| 200mm | -0.5mm to 0.5mm | -0.014mm to -0.005mm | Not Rated | 15 | Very Hard | Rockwell C59 | 00000000 | 00000 |
| 400mm | -0.5mm to 0.5mm | -0.014mm to -0.005mm | Not Rated | 15 | Very Hard | Rockwell C59 | 00000000 | 000000 |
Hollow Linear Motion Shafts with Material Certification
Keep a material certificate on hand for compliance and quality assurance needs. Certificates include a traceable lot number and material test report. These hollow shafts reduce system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center. Use them with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. They're smooth, hard, and wear resistant. Both the interior and exterior are ground and polished to tight diameter and straightness tolerances.
These shafts are heat treated to relieve internal stresses, which can cause them to warp out of tolerance. All have chamfered ends to remove sharp edges and reduce damage to bearings, housings, and other components during installation.
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 | Straightness Tolerance | Surface Smoothness, microinch | ID Surface Smoothness (RMS), microinch | Edge Type | Hardness Rating | Hardness | Each | |
Inch—1026 Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1 1/4" Dia. (3/4" ID) | |||||||||||
| 12" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 24" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 36" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 48" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
1 1/2" Dia. (1" ID) | |||||||||||
| 12" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 00000 |
| 24" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 36" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 48" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
2" Dia. (1 1/2" ID) | |||||||||||
| 12" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 24" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 36" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 48" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 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 |