Rotary Motion Guide
Rotary systems involve rotating mechanical parts such as motors, sprockets, and pulleys. Learn the basics about rotary motion here.
Products for USB Sensing and Control
Quantity Available: 59m
| Length | Price |
|---|---|
| 5m | $57.60 |
| 10m | $55.20 |
This shaft is made of 1045 carbon steel, precision ground to exactly 25mm, and chrome plated. The production process is the same as linear shaft - except the shaft is not case hardened, allowing you to easily drill and machine the shaft. This shaft has a keyway machined into the entire length.
25mm is one of the 'core' shaft diameters in our mechanical product line - in addition to 8mm, 12mm and 17mm. 25mm is ideal for heavy duty #40 chain systems.
We also sell the 25mm shaft without a keyway.
If you need to connect this shaft to a motor or another device with a shaft, you can use a shaft coupler:
| Product | Physical Properties | ||||
|---|---|---|---|---|---|
| Part Number | Price | Inner Diameter | Material | Coupling Rated Torque | Coupling Rated Speed |
 Jaw Coupling Half 25mm Series 24
|
$6.85 | 25 mm | Aluminum | 611.8 kg·cm | 4000 RPM |
 Jaw Coupling Half 25mm Series 38
|
$7.40 | 25 mm | Aluminum | 3.3 Mg·cm | 4000 RPM |
If you're using a rotary system that requires a lot of torque, you may be interested in pulleys and sprockets. By using a two pulleys or sprockets of different sizes, you can increase the gear ratio of the system. Pulleys and sprockets can also be used to transmit rotation over a long distance. For more guidance on building a transmission system, visit our Rotary Motion Guide. Here is a list of our 25mm bore pulleys and sprockets:
| Product | Physical Properties | ||
|---|---|---|---|
| Part Number | Price | Inner Diameter | Number of Teeth |
 #40 Chain Sprocket with 25mm Bore and 20 Teeth
|
$7.00 | 25 mm | 20 |
 #40 Chain Sprocket with 25mm Bore and 40 Teeth
|
$17.50 | 25 mm | 40 |
 #40 Chain Sprocket with 25mm Bore and 60 Teeth
|
$27.00 | 25 mm | 60 |
Systems with heavy loads or pulley/sprocket assemblies often put a lot of sideways strain on the shaft. In such a system, you can use rotary bearings to protect and support the shaft:
| Product | Physical Properties | Mechanical Properties | |||
|---|---|---|---|---|---|
| Part Number | Price | Inner Diameter | Bearing Type | Static Load | Dynamic Load |
 Flanged Rotary Bearing for 25mm Shaft
|
$5.25 | 25 mm | Rotary Shaft (Flanged) | 7.9 kN | 14 kN |
 Pillow Block Rotary Bearing for 25mm Shaft
|
$5.75 | 25 mm | Rotary Shaft (Pillow Block) | 7.9 kN | 14 kN |
| Physical Properties | |
|---|---|
| Diameter | 25 mm |
| Keyway Width | 8 mm |
| Customs Information | |
| Canadian HS Export Code | 8483.10.00 |
| American HTS Import Code | 8483.10.50.00 |
| Country of Origin | CA (Canada) |
| Product | Physical Properties | |
|---|---|---|
| Part Number | Price | Diameter |
 25mm Precision Ground Rotary Shaft (no keyway)
|
$20.00/Meter | 25 mm |
 25mm Precision Ground Rotary Shaft (w/ keyway)
|
$60.00/Meter | 25 mm |
 25mm Single Ended Output Shaft for Series 50 Worm Gearbox
|
$6.85 | 25 mm |
 25mm Double Ended Output Shaft for Series 50 Worm Gearbox
|
$7.40 | 25 mm |
 25mm Single Ended Output Shaft for Series 63 Worm Gearbox
|
$7.40 | 25 mm |
 25mm Double Ended Output Shaft for Series 63 Worm Gearbox
|
$8.90 | 25 mm |