GT2 Idler Pulley – Smooth – 3mm Bore


Availability: In Stock

In a toothed belt system, often a pulley is used on the opposing side of the belt to create tension to ensure the belt never skips a tooth. These smooth GT2 Idler pulleys are ideal for this application and feature integrated bearings.


SKU: ROB-221 Category: Tags: , , , ,


This GT2 timing pully has no teeth and is designed to be an idler or used to create a belt tensioner. Unlike a standard GT2 pulley, this one has a set of bearings pressed into the center bore. The bearings have a center bore of 3mm and allow the pulley to spin freely on a stationary shaft or bolt. The pully is designed to work with all forms of 6mm wide GT2 belt we carry in stock and is intended to run on the smooth side of the belt.


  • Press fit 3mm inner diameter bearings
  • Smooth, no teeth
  • Designed for 6mm belt width
  • Ideal for belt tensioners and idlers

Package Contents

  • 1 x GT2 Idler Pulley – Smooth - 3mm Bore

  Difficulty Level

Soldering Skill: N/A
Prototyping Skill: N/A
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 5 g
Shipping Dimensions: 20 × 20 × 9 mm




Center Bore:


  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


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