Description
Ball Bearing Idler Sprockets — Chain Tension Control
Ball bearing idler sprockets are pre-assembled with sealed ball bearings and are designed to be installed on non-adjustable shafts along the chain path to take up slack, maintain proper chain tension, and prevent chain whip on return runs. They rotate freely on a stationary shaft, guided by the chain itself. Available in ANSI #35-#80 and ISO 06B-16B with tooth counts from 13 to 25.
Specifications
| Parameter | Value |
|---|---|
| ANSI Sizes | #35, #40, #50, #60, #80 |
| ISO Sizes | 06B, 08B, 10B, 12B, 16B |
| Teeth | 13, 15, 17, 19, 21, 25 |
| Bearing | Sealed ball bearing (pre-installed) |
| Material | 1045 Steel, hardened teeth |
Features
☑ Pre-assembled — sealed ball bearing factory-installed, ready to mount on stationary shaft
☑ Sealed bearing — protects against dust, moisture, and contaminants
☑ Hardened teeth — extended life even under continuous chain contact
☑ Prevents chain whip — maintains consistent tension on long return runs
☑ Bronze bushed and roller bearing options also available on request
☑ ISO 9001:2015 certified, EN 10204 Type 3.1 material certs
Applications
Long-span conveyor return runs, chain drives with non-adjustable centre distances, serpentine chain paths, applications where chain sag would cause product contact or safety hazards.
Reviews
“Idler sprockets on our conveyor return run eliminated the chain sag we were having. Sealed bearings still running after 2 years.” ★★★★★ — Maint Eng., Adelaide, Australia
“Pre-assembled unit. Mounted on a bolt, done. Simple and effective.” ★★★★★ — Packaging Eng., Brisbane, Australia
“#40 idler sprockets for our serpentine conveyor. Chain whip eliminated.” ★★★★☆ — Plant Mgr, Manila, Philippines
“Good quality sealed bearing idlers. Dust-proof in our grain handling environment.” ★★★★★ — Ops Mgr, Dubbo, Australia
“Reliable idler supply. Used across multiple conveyor lines.” ★★★★★ — Buyer, Cape Town, South Africa
FAQ
How is an idler sprocket different from a drive sprocket?
Do I need to lubricate the bearing?
What shaft size?
Stainless steel idler?
MOQ?
Chains
Tensioners
✅ ISO 9001 ✅ ANSI/ISO ✅ Pre-lubricated sealed bearing | Ever-Power: full idler range.
