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 Double Ended Output Shaft for Series 50 Worm Gearbox

ID: TRM4009_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.

This double ended gearshaft allows you to mount something on either end of a series 50 worm gearbox.


Quantity Available: 31

Qty Price
5 $7.10
10 $6.81

25mm single ended shaft for series 50 worm gearboxes. W/ keyway and keys included as well as a pair of washers and snap rings for retention in the gearbox.

Worm Gearboxes

This shaft is designed to fit into a worm gearbox and act as an output shaft. You can install it by following these steps:

  • Put the keys into the keyways on the shaft.
  • Slide the shaft through the gearbox until it's centered inside.
  • Slide washers onto both ends of the shaft.
  • Put snap rings onto both ends of the shaft so that the washer is between the snap ring and the gearbox (There is a groove at the end of the shaft for the ring to rest inside).
Product Gearbox Properties
Image Part Number Price Gearbox Series Gear Ratio Maximum Strength of Gears Input Shaft Diameter
TRM4402_0 $92.50 50 30:1 85 N·m 14 mm

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 $4.65 25 mm 20
TRM4156_0 $8.00 25 mm 40
TRM4157_0 $13.35 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
Gearbox Series 50
Customs Information
Canadian HS Export Code 8483.10.00
American HTS Import Code 8483.10.50.00
Country of Origin CN (China)


Product Physical Properties
Image Part Number Price Gearbox Series
TRM4008_0 $6.85 50
TRM4009_0 $7.40 50