Smooth Belt - 1/8D (2.5 ID)
A smooth (round) rubber belt with a 3.18 mm (1/8″) cross-section diameter and 63.5 mm (2.5″) inside diameter. The elastic rubber construction provides excellent grip on pulleys and can withstand temperatures from −37 °C to +121 °C (−35 °F to +250 °F) with a Shore A70 durometer hardness.
Key Features
- 3.18 mm (1/8″) Cross-Section – Fits Actobotics and compatible smooth pulleys
- 63.5 mm (2.5″) Inside Diameter – Unstretched belt circumference
- Shore A70 Hardness – Flexible rubber with good grip characteristics
- 12–26% Stretch Factor – Adjustable tension depending on pulley spacing
- Wide Temperature Range – −37 °C to +121 °C
Ideal For
- Actobotics and robotics drive systems
- Follow-focus mechanisms
- Linear drives and XY tables
- 90° drive configurations
- Robot tracks and battery hold-downs
Tip: A lower stretch factor (12%) applies less side-load to axles and creates less friction. A higher stretch factor (up to 26%) increases resistance to belt deflection but adds more side-load.
Package Contents
- 1× Smooth Belt, 3.18 mm × 63.5 mm ID
The Smooth Belt - 1/8D (2.5 ID) appears in the following collections:
SKU SF-ROB-12370
by Little Bird
