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

25mm Precision Ground Rotary Shaft (w/ keyway)

ID: TRM4003_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 with machined keyway for rotary power transmission.

$60.00 /Meter

Quantity Available: 72m

Length Price
5m $57.60
10m $55.20
Cut Fee
Sold by the
Cut Range
50 - 2000mm

Number of Pieces
Piece Length in mm

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.

  • TRM4018 - 25mm Precision Ground Rotary Shaft - 1500mm (no keyway)
  • 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
    TRM4325_0 $6.85 25 mm Aluminum 611.8 kg·cm 4000 RPM
    TRM4329_0 $14.80 25 mm Aluminum 3.3 Mg·cm 4000 RPM

    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 25mm bore pulleys and sprockets:

    Product Physical Properties
    Image Part Number Price Inner Diameter Number of Teeth
    TRM4155_0 $7.00 25 mm 20
    TRM4156_0 $8.00 25 mm 40
    TRM4157_0 $27.00 25 mm 60

    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
    TRM4506_0 $5.25 25 mm Rotary Shaft (Flanged) 7.9 kN 14 kN
    TRM4507_0 $5.75 25 mm Rotary Shaft (Pillow Block) 7.9 kN 14 kN

    Product Specifications

    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)


    Here are all of our 25mm shafts:

    Product Physical Properties
    Image Part Number Price Diameter
    TRM4003_0 $60.00/Meter 25 mm
    TRM4008_0 $6.85 25 mm
    TRM4009_0 $7.40 25 mm
    TRM4010_0 $7.40 25 mm
    TRM4011_0 $8.90 25 mm
    TRM4018_0 $20.00/Meter 25 mm