Product Characteristics
One-piece HT250 gray cast iron idler body
Even graphite distribution inside casting provides sufficient rigidity to bear lateral compression force from belts.
Enclosed bearing assembly structure
Sealed bearing embedded in hub blocks dust and debris to prevent stuck rotation during long-term operation.
Single-side flange limiting structure
Integrated side retainer restricts lateral movement of belts to avoid slipping out of grooves.
Product advantages
Correct belt running track efficiently
Side flange limits belt offset to reduce edge abrasion and side cracking of belts.
Sealed bearings cut frequent lubrication work
Internal grease is locked by dustproof seal, no regular oil filling required under normal working conditions.
Superior vibration damping performance of HT250 material
Absorb vibration generated by high-speed belt swing and greatly reduce overall transmission noise.
Product detail photos
Product Description
| Idler pulley | |
| Groove Profile | SPA,SPB,SPC,SPZ,3V,5V,8V |
| Number of Grooves | 1 / 2 / 3 / 4 / 5 grooves |
| Outer Diameter (OD) | 80mm, 100mm, 160mm, 250mm |
| Pitch Diameter (PD) | 76mm, 95mm, 153mm, 242mm |
| Matching Taper Bushing | 1008, 1108, 1210, 1610, 2012, 2517, 3020 |
| Standard Bore Range | 16mm ~ 80mm, custom bore available |
| Keyway Size | 5×3, 6×3, 8×4, 10×5, 12×6 |
| Material | HT200 Cast Iron /45# Carbon Steel |
| Matching Belt | SPZ / SPA / SPB V-belt |
| Application Equipment | Fan, Water Pump, Reducer, Agricultural Machinery, Woodworking Machine |
| Production Process | Casting + Precision Turning, Dynamic Balancing Test |
| Custom Service | Non-standard OD, Special Bore, Wider Groove, Lightening Holes |
| Place of Origin | China |
| Packaging | Wooden case/Carton |
| HS code | 8483900090 |
Partial drawing display
Eight reasons to choose us
We have our own factory
Multiple certificate certifications
Customizationand selection Steps
Payment and Price Terms
Production and testing
Packaging and transportation
Signing for receipt and after-sales service
FAQ
Q: Does the idler pulley have to contact the back of the belt during installation?
A:Guide idlers usually contact the belt back, while tension idlers contact the working surface. Follow the original equipment transmission drawing for installation.
Q: Is HT250 gray iron idler suitable for dusty mining environment?
A: It is applicable with extra anti-rust coating. Shorten inspection cycle and clean accumulated mineral dust regularly.
Q: Is one single idler enough for multi-belt transmission system?
A:One idler works for short-distance light-load transmission. A pair of idlers is recommended for long-distance wide multi-groove belts to balance tension evenly.
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