Idler Sprocket for 40 Link Chain With 18 Teeth One Half Inch Bore Bearing 203KRR5 Black Oxide Finish Carbon Steel Built Tough Industrial Machinery and DIY Projects

Idler Sprocket for 40-Link Chain, 18 Teeth, 1/2 in Bore
✔️ 18-tooth idler sprocket for 40-link chain, 1/2 in bore (12.7 mm), 1 pc pack

This rugged idler sprocket is designed to guide a 40-link chain in conveyors, machinery, and DIY projects that demand a tough, reliable drive component.

✅ Material: Carbon steel with black oxide finish
✅ Sprocket type: Idler
✅ Pitch: 1/2 in (12.7 mm)
✅ Teeth: 18; Bore: 1/2 in (12.7 mm)
✅ Bearings: 203KRR5

💡 What is a chain idler sprocket used for in drive systems and conveyors? This handy piece keeps chain aligned and reduces wear across long runs.
- Guides chain and maintains tension for smooth motion
- Reduces chain wear and fatigue in conveyors and machinery
- Compatible with 1/2 in bore chain drives and 40-link configurations
- Durable carbon steel with black oxide finish for harsh environments