About Shafts
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Rotary Shafts
Combine these general purpose drive shafts with gears, sprockets, and bearings to transmit rotary motion. All are turned, precision ground, and polished to meet tight diameter and straightness tolerances. This means these shafts evenly distribute loads, reduce vibration, and improve accuracy and stability.
Steel shafts are generally stronger than stainless steel shafts but not as corrosion resistant. Carbon steel shafts balance high strength and good machinability, making them ideal for general purpose use.
Stainless steel shafts are more corrosion resistant than steel shafts but more difficult to machine. 303 stainless steel shafts have good corrosion resistance and are easier to machine than other types of stainless steel. 316 stainless steel shafts are the most corrosion resistant stainless steel shaft.
Shafts with chamfered edges reduce damage to bearings, housings, and other components during installation.
For technical drawings and 3-D models, click on a part number.
Lg. | Lg. Tolerance | Straightness Tolerance | Edge Type | Hardness Rating | Hardness | Each | |
Metric—1045 Carbon Steel | |||||||
---|---|---|---|---|---|---|---|
8mm Dia. (Tolerance: -0.051mm to 0mm) | |||||||
50mm | -1.57mm to 1.57mm | 0.3 mm per 300 mm | Chamfered | Medium | Brinell 197 | 0000000 | 000000 |
100mm | -1.57mm to 1.57mm | 0.3 mm per 300 mm | Chamfered | Medium | Brinell 197 | 0000000 | 00000 |
200mm | -1.57mm to 1.57mm | 0.3 mm per 300 mm | Chamfered | Medium | Brinell 197 | 0000000 | 00000 |
400mm | -1.57mm to 1.57mm | 0.3 mm per 300 mm | Chamfered | Medium | Brinell 197 | 0000000 | 00000 |
1,000mm | -1.57mm to 1.57mm | 0.3 mm per 300 mm | Chamfered | Medium | Brinell 197 | 0000000 | 00000 |
2,000mm | -1.57mm to 1.57mm | 0.3 mm per 300 mm | Chamfered | Medium | Brinell 197 | 0000000 | 00000 |
Metric—303 Stainless Steel | |||||||
8mm Dia. (Tolerance: -0.005mm to 0mm) | |||||||
100mm | -0.25mm to 0.25mm | 0.18 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 0000 |
200mm | -0.25mm to 0.25mm | 0.18 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
400mm | -0.25mm to 0.25mm | 0.18 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
600mm | -0.25mm to 0.25mm | 0.18 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
800mm | -0.25mm to 0.25mm | 0.18 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
1,000mm | -0.25mm to 0.25mm | 0.18 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
Metric—316 Stainless Steel | |||||||
8mm Dia. (Tolerance: -0.005mm to 0mm) | |||||||
200mm | -0.25mm to 0.25mm | 4.50 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
400mm | -0.25mm to 0.25mm | 4.50 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
600mm | -0.25mm to 0.25mm | 4.50 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
800mm | -0.25mm to 0.25mm | 4.50 mm per 300 mm | Chamfered | Medium | Rockwell B83 | 0000000 | 00000 |
Flange-Mount Idler Rotary Shafts
Mount the flange to a machine or wall to support idler sprockets and pulleys in tensioning applications. They include washers and a nut to position your component and hold it in place.
For technical drawings and 3-D models, click on a part number.
Overall | Thread | Mounting Holes | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia. | Lg. | Lg. | Dia. | Size | Pitch | Lg. | Flange Thick. | Bolt Circle Dia. | No. of | Dia. | Edge Type | Hardness Rating | Hardness | Each | |
Metric—Zinc-Plated 1215 Carbon Steel | |||||||||||||||
8mm | 9mm | 24mm | 28mm | M6 | 1 mm | 6.6mm | 7mm | 20mm | 4 | 3mm | Straight | Medium | Rockwell B84 | 0000000 | 000000 |
Thread-Mount Idler Rotary Shafts
Thread these shafts into a tapped hole to support idler sprockets and pulleys in tensioning applications.
Shafts with retaining ring grooves come with a retaining ring and spacers to position your component and hold it in place.
For technical drawings and 3-D models, click on a part number.
Overall | Thread | Groove | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia. | Lg. | Lg. | Dia. | Size | Pitch | Lg. | Wd. | Dia. | End-to-Groove Lg. | Edge Type | Hardness Rating | Hardness | Each | |
Metric with Retaining Ring Grooves—Zinc-Plated 1215 Carbon Steel | ||||||||||||||
8mm | 9mm | 28mm | 15mm | M6 | 1 mm | 8mm | 0.733mm | 6.35mm | 2.56mm | Chamfered | Medium | Rockwell B84 | 0000000 | 00000 |
Keyed Rotary Shafts
Combine these shafts with a machine key (not included) to transmit torque to gears, sprockets, and other power transmission components. All have an ANSI standard keyway (keys not included; see our selection of key stock). Their edges are chamfered to remove sharp corners, reducing damage to bearings, housings, and other components during installation. All are turned, ground, or polished to tight diameter and straightness tolerances.
Steel shafts are generally stronger than aluminum and stainless steel shafts but not as corrosion resistant. 1045 carbon steel shafts balance high strength and good machinability, making them ideal for general purpose use.
For technical drawings and 3-D models, click on a part number.
Keyway | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Lg. | Lg. | Wd. | Dp. | ANSI Keys Included | Straightness Tolerance | Edge Type | Hardness Rating | Hardness | Each | |
Metric—1045 Carbon Steel | ||||||||||
8mm Dia. (Tolerance: -0.0635mm to 0mm) | ||||||||||
300mm | 300mm | 2mm | 1.2mm | No | 0.33 mm per 300 mm | Chamfered | Medium | Rockwell B95 | 00000000 | 000000 |
500mm | 500mm | 2mm | 1.2mm | No | 0.33 mm per 300 mm | Chamfered | Medium | Rockwell B95 | 00000000 | 00000 |
1,000mm | 1,000mm | 2mm | 1.2mm | No | 0.33 mm per 300 mm | Chamfered | Medium | Rockwell B95 | 00000000 | 00000 |
1,200mm | 1,200mm | 2mm | 1.2mm | No | 0.33 mm per 300 mm | Chamfered | Medium | Rockwell B95 | 00000000 | 00000 |
1,500mm | 1,500mm | 2mm | 1.2mm | No | 0.33 mm per 300 mm | Chamfered | Medium | Rockwell B95 | 00000000 | 00000 |
1,800mm | 1,800mm | 2mm | 1.2mm | No | 0.33 mm per 300 mm | Chamfered | Medium | Rockwell B95 | 0000000 | 00000 |
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 |
Ball Splines and Bearings
Create a compact linear and rotary motion system for applications requiring complex, fast movements, such as robotics. The grooves on the ball splines transmit rotary power as ball bearings move smoothly and precisely along their length, even at high speeds.
Ball splines are alloy steel for high strength and wear resistance. They're hardened on the outside for additional wear resistance while the center is soft enough to absorb stress from shifting loads.
Bearings have a retaining ring groove, so they can be positioned in your system with a retaining ring (not included). Bearings with a keyway include a machine key for attaching your load. Flanged bearings have a surface with mounting holes for attaching your load.
Spline | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia., mm | Dia. Tolerance, mm | Lg., mm | Lg. Tolerance, mm | Lg., mm | No. of | Root Dia., mm | Surface Smoothness, microinch | Edge Type | Hardness Rating | Hardness | Heat Treatment | Each | |
Metric—52100 Alloy Steel | |||||||||||||
Splined on Both Ends | |||||||||||||
8 | -0.015 to 0 | 150 | -0.7874 to 0.7874 | 150 | 4 | 7.2 | 16 | Chamfered | Very Hard | Rockwell C60 | Case Hardened | 00000000 | 0000000 |
8 | -0.01 to 0 | 200 | -0.05 to 0.05 | 200 | 4 | 7.2 | 16 | Chamfered | Very Hard | Rockwell C60 | Case Hardened | 000000000 | 000000 |
Material | Keyway | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Spline Dia., mm | For No. of Splines | Overall Lg., mm | OD, mm | Bearing | Ball | Dynamic Load Cap., lbs. | Max. Dynamic Torque, in.-lbs. | With Retaining Ring Grooves | Includes | Dp., mm | Lg., mm | Wd., mm | Each | |
8 | 4 | 25 | 16 | Steel | Steel | 325 | 18 | Yes | Machine Key | 1.2 | 10.5 | 2.5 | 00000000 | 000000 |
Material | Mounting Hole | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Spline Dia., mm | For No. of Splines | Overall Lg., mm | Flange OD, mm | OD, mm | Bearing | Ball | Dynamic Load Cap., lbs. | Max. Dynamic Torque, in.-lbs. | With Retaining Ring Grooves | No. of | Thread Size | Each | |
8 | 4 | 25 | 32 | 16 | Steel | Steel | 325 | 18 | Yes | 4 | M3 × 0.5 mm | 00000000 | 000000 |