About Shafts
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Support-Rail Shafts
These shafts include a support rail for a stable setup that eliminates bending and prevents linear bearings from rotating. Shafts have a smooth surface to reduce friction and wear on linear bearings—the lower the microinch value a shaft has, the smoother its finish and the less friction it will create. They are case-hardened to increase hardness and wear resistance on the surface of the shaft while allowing the center to remain soft for absorbing stresses caused by shifting loads. The edges are chamfered to remove sharp corners, reducing damage to bearings, housings, and other components during installation. All are turned, ground, and polished to tight diameter and straightness tolerances.
One-piece shafts reduce vibration and assembly time. Two-piece shafts allow you to replace the shaft when it becomes worn.
Ceramic-coated aluminum shafts are good for use in harsh environments; a 0.002" thick ceramic coating prevents weld spatter, molten glass, and paint from sticking to the shaft. They are lighter in weight than steel and stainless steel shafts. Because they have a soft core, they are not for use with linear ball bearings, which may dent the shaft.
Carbon steel shafts are stronger than aluminum shafts but not as corrosion resistant. These shafts balance high strength and good machinability, making them ideal for general purpose use.
Stainless steel shafts have good corrosion resistance and are stronger than aluminum shafts.
For technical drawings and 3-D models, click on a part number.

Mounting Hole | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Lg. Tolerance | Ctr. Ht. | O'all Wd. | End-to-Mount. Hole Lg. | Ctr.-to-Ctr. Lg. | Ctr.-to-Ctr. Wd. | Dia. | Mounting Fasteners Included | Surface Smoothness, microinch | Hardness Rating | Hardness | Each | |
Inch—Ceramic-Coated 6063 Aluminum (T6 Temper) | |||||||||||||
1/2" Dia. (Tolerance: -0.0012" to -0.0004") | |||||||||||||
6" | -0.03" to 0.03" | 1 1/8" | 1 1/2" | 1" | 4" | 1" | 5/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
9" | -0.03" to 0.03" | 1 1/8" | 1 1/2" | 2 1/2" | 4" | 1" | 5/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 00000 |
12" | -0.03" to 0.03" | 1 1/8" | 1 1/2" | 2" | 4" | 1" | 5/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
18" | -0.03" to 0.03" | 1 1/8" | 1 1/2" | 1" | 4" | 1" | 5/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
24" | -0.03" to 0.03" | 1 1/8" | 1 1/2" | 2" | 4" | 1" | 5/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
3/4" Dia. (Tolerance: -0.0012" to -0.0004") | |||||||||||||
6" | -0.03" to 0.03" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 00000 |
9" | -0.03" to 0.03" | 1 1/2" | 1 3/4" | 1 1/2" | 6" | 1 1/4" | 7/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 00000 |
12" | -0.03" to 0.03" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
18" | -0.03" to 0.03" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
24" | -0.03" to 0.03" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
1" Dia. (Tolerance: -0.0012" to -0.0004") | |||||||||||||
6" | -0.03" to 0.03" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 00000 |
9" | -0.03" to 0.03" | 1 3/4" | 2 1/8" | 1 1/2" | 6" | 1 1/2" | 9/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
12" | -0.03" to 0.03" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
18" | -0.03" to 0.03" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |
24" | -0.03" to 0.03" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 12 | Ultra Hard | Rockwell C70 | 0000000 | 000000 |

Mounting Hole | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Lg. Tolerance | Ctr. Ht. | O'all Wd. | End-to-Mount. Hole Lg. | Ctr.-to-Ctr. Lg. | Ctr.-to-Ctr. Wd. | Dia. | Mounting Fasteners Included | Surface Smoothness, microinch | Hardness Rating | Hardness | Each | |
Inch—1566 Carbon Steel | |||||||||||||
1/2" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 1/8" | 1 1/2" | 2" | 4" | 1" | 5/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 0000000 |
48" | -0.0313" to 0.0313" | 1 1/8" | 1 1/2" | 2" | 4" | 1" | 5/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
5/8" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 1/8" | 1 5/8" | 2" | 4" | 1 1/8" | 3/16" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 1/8" | 1 5/8" | 2" | 4" | 1 1/8" | 3/16" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
3/4" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
1" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
1 1/4" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 2 1/8" | 2 1/2" | 3" | 6" | 1 7/8" | 11/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
48" | -0.0313" to 0.0313" | 2 1/8" | 2 1/2" | 3" | 6" | 1 7/8" | 11/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
1 1/2" Dia. (Tolerance: -0.0011" to -0.0006") | |||||||||||||
24" | -0.0313" to 0.0313" | 2 1/2" | 3" | 4" | 8" | 2 1/4" | 11/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
48" | -0.0313" to 0.0313" | 2 1/2" | 3" | 4" | 8" | 2 1/4" | 11/32" | No | 8 | Very Hard | Rockwell C60 | 00000000 | 000000 |
Inch—440C Stainless Steel | |||||||||||||
1/2" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 1/8" | 1 1/2" | 2" | 4" | 1" | 5/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 1/8" | 1 1/2" | 2" | 4" | 1" | 5/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
5/8" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 1/8" | 1 5/8" | 2" | 4" | 1 1/8" | 3/16" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 1/8" | 1 5/8" | 2" | 4" | 1 1/8" | 3/16" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
3/4" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 1/2" | 1 3/4" | 3" | 6" | 1 1/4" | 7/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
1" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
48" | -0.0313" to 0.0313" | 1 3/4" | 2 1/8" | 3" | 6" | 1 1/2" | 9/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 00000000 |
1 1/4" Dia. (Tolerance: -0.001" to -0.0005") | |||||||||||||
24" | -0.0313" to 0.0313" | 2 1/8" | 2 1/2" | 3" | 6" | 1 7/8" | 11/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
48" | -0.0313" to 0.0313" | 2 1/8" | 2 1/2" | 3" | 6" | 1 7/8" | 11/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 00000000 |
1 1/2" Dia. (Tolerance: -0.0011" to -0.0006") | |||||||||||||
24" | -0.0313" to 0.0313" | 2 1/2" | 3" | 4" | 8" | 2 1/4" | 11/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 000000 |
48" | -0.0313" to 0.0313" | 2 1/2" | 3" | 4" | 8" | 2 1/4" | 11/32" | No | 8 | Very Hard | Rockwell C50 | 0000000 | 00000000 |
Metric—1055 Carbon Steel | |||||||||||||
12mm Dia. (Tolerance: -0.011mm to 0mm) | |||||||||||||
600mm | -3mm to 3mm | 28mm | 43mm | 37.5mm | 75mm | 29mm | 4.5mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
1,200mm | -5mm to 0mm | 28mm | 43mm | 37.5mm | 75mm | 29mm | 4.5mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
16mm Dia. (Tolerance: -0.011mm to 0mm) | |||||||||||||
600mm | -3mm to 3mm | 30mm | 48mm | 50mm | 100mm | 33mm | 5.5mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
1,200mm | -5mm to 0mm | 30mm | 48mm | 50mm | 100mm | 33mm | 5.5mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
20mm Dia. (Tolerance: -0.013mm to 0mm) | |||||||||||||
600mm | -3mm to 3mm | 38mm | 56mm | 50mm | 100mm | 37mm | 6.6mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
1,200mm | -5mm to 0mm | 38mm | 56mm | 50mm | 100mm | 37mm | 6.6mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
25mm Dia. (Tolerance: -0.013mm to 0mm) | |||||||||||||
1,200mm | -5mm to 0mm | 42mm | 60mm | 60mm | 120mm | 42mm | 6.6mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |
30mm Dia. (Tolerance: -0.013mm to 0mm) | |||||||||||||
1,200mm | -5mm to 0mm | 53mm | 74mm | 75mm | 150mm | 51mm | 9mm | No | 12 | Very Hard | Rockwell C60 | 00000000 | 000000 |