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

Spiral Beam Coupling 4mm - 4mm

ID: TRM4332_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 aluminium beam coupling connects two 4mm shafts together with set screws


Quantity Available: 214

Qty Price
5 $3.36
10 $3.22

This beam type coupling can be used to connect two 4mm shafts together. Each shaft is held in place by two set screws, allowing for easy installation. The spiral cut design allows for up to 2° of bending from angular misalignment of the shafts as well as 0.12mm of eccentric misalignment.

If you're having trouble with slipping, you can file a groove into the shaft where the set screws hold it in place. You can also use Loctite on the set screws to ensure that they remain in place.


If you want to be able to measure the speed that a rotary system is moving at, you can use this 4mm shaft coupler to connect to any of these encoders:

Product Physical Properties Encoder Properties
Image Part Number Price Shaft Diameter Encoder Resolution Encoder Speed Max
3530_1 $50.00 4 mm 360 CPR 3000 RPM

Product Specifications

Physical Properties
Material Aluminium
Coupling Rated Torque 10 kg·cm
Coupling Rated Speed 8000 RPM
Torsional Stiffness 110 N·m/rad
Shaft Angularity Tolerance
Shaft Eccentricity Tolerance 150 μm
Inner Diameter 4 mm
Weight 14 g
Hex Key Size Required 1.5 mm
Customs Information
Canadian HS Export Code 8483.60.00
American HTS Import Code 8483.60.80.00
Country of Origin CN (China)