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

2GT Idler Pulley with 8mm Bore and 44 Teeth

ID: TRM4158_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.

Free spinning pulley for tensioning.


Quantity Available: 149

Qty Price
5 $3.36
10 $3.22

Idler pulleys are standard pulleys with an integrated bearing. This allows them to spin freely without impeding the rotation in your system. This is useful for when you want an adjustable way to tension a belt system that doesn't impact the movement of the belt or place additional load on the motor.

Note: A small amount of Loctite can be used on the shaft to prevent the idler pulley from shifting laterally on the shaft if this is an issue.


This pulley can be used with any 2GT series belt. The size of belt required depends on the desired distance between your two pulleys; for installation details see the Rotary Motion Primer.

Product Physical Properties
Image Part Number Price Pulley Series Belt Circumference Working Tensile Strength
TRM4200_0 $1.50 2GT 120 mm 27 N
TRM4201_0 $1.50 2GT 156 mm 27 N
TRM4202_0 $1.50 2GT 184 mm 27 N
TRM4203_0 $1.50 2GT 220 mm 27 N
TRM4204_0 $1.50 2GT 276 mm 27 N
TRM4205_0 $3.00 2GT 330 mm 27 N
TRM4206_0 $3.35 2GT 392 mm 27 N
TRM4207_0 $5.20 2GT 560 mm 27 N
TRM4218_0 $2.25/Meter 2GT 27 N

Rotary Shaft

If you're building a rotary transmission system of any kind, chances are you'll need some rotary shaft. Here's a list of rotary shaft compatible with this pulley:

Product Physical Properties
Image Part Number Price Diameter
TRM4000_0 $6.50/Meter 8 mm

Product Specifications

Physical Properties
Inner Diameter 8 mm
Number of Teeth 44
Customs Information
Canadian HS Export Code 8483.50.00
American HTS Import Code 8483.50.90.40
Country of Origin CN (China)


Product Physical Properties
Image Part Number Price Inner Diameter Number of Teeth
TRM4100_0 $2.50 5 mm 16
TRM4101_0 $3.00 14 22
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
TRM4107_0 $3.00 12 mm 36
TRM4108_0 $3.00 12 mm 44
TRM4109_0 $3.55 12 mm 60
TRM4110_0 $4.45 12 mm 80
TRM4158_0 $3.50 8 mm 44
TRM4162_0 $2.50 6 mm 22