Products for USB Sensing and Control
Products for USB Sensing and Control


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

8mm Precision Ground Rotary Shaft

ID: TRM4000_0
Recommended for new designs: Phidgets Inc. is not the original manufacturer for this product, but we intend to sell it (or a similar replacement with a compatible form, fit and function) for as long as it is available from the supplier.

High carbon steel shaft for rotary power transmission.

$6.50 /Meter

Quantity Available: 249m

Length Price
5m $6.24
10m $5.98
Cut Fee
Sold by the
Cut Range
50 - 2000mm

Number of Pieces
Piece Length in mm

This shaft is made of 1045 carbon steel and is 8mm in diameter. This is the same diameter as the gearbox output shaft on all our NEMA 17 steppers as well as mid sized DC motors.

Shaft Couplers

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
Image Part Number Price Inner Diameter Material Coupling Rated Torque Coupling Rated Speed Torsional Stiffness
TRM4313_0 $3.00 8 mm Aluminum 35.7 kg·cm 12000 RPM
TRM4334_0 $3.35 8 mm Aluminium 10 kg·cm 8000 RPM 110 N·m/rad

Pulleys and Sprockets

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 Primer. Here is a list of our 8mm bore pulleys and sprockets:

Product Physical Properties
Image Part Number Price Inner Diameter Number of Teeth
TRM4102_0 $2.75 8 mm 22
TRM4103_0 $2.50 8 mm 32
TRM4104_0 $3.00 8 mm 44
TRM4105_0 $3.00 8 mm 60
TRM4106_0 $4.00 8 mm 80
TRM4111_0 $3.00 8 mm 12
TRM4112_0 $3.15 8 mm 24
TRM4113_0 $4.45 8 mm 34
TRM4114_0 $6.70 8 mm 50
TRM4135_0 $3.00 8 mm 10
TRM4158_0 $3.50 8 mm 44

Rotary Bearings

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
Image Part Number Price Inner Diameter Bearing Type Static Load Dynamic Load
TRM4500_0 $4.00 8 mm Rotary Shaft (Flanged) 1.3 kN 3.3 kN
TRM4501_0 $4.25 8 mm Rotary Shaft (Pillow Block) 1.3 kN 3.3 kN

Product Specifications

Physical Properties
Diameter 8 mm
Customs Information
Canadian HS Export Code 8483.10.00
American HTS Import Code 8483.10.50.00
Country of Origin CA (Canada)