What is the difference between carrying and return idlers?
Carrying idlers support the loaded top strand of the belt; return idlers support the empty bottom strand on its way back to the tail.
IMP · Idlers
Impact Idler
缓冲(冲击)托辊
Impact roller conveyor sets with rubber discs that absorb the drop at the loading point instead of the belt — the classic fix for a hammered belt at the transfer.
- SKU prefixIDLERS-IMP
- MOQ100 pcs
- Lead time1 month
- StandardIMP
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Choose the specs for your application. We will reply with pricing, FOB and lead time for your selection.
Current SKU: IDLERS-IMP
Overview
Impact Idler at a Glance
89–194 mmShell Ø
500–1600 mmBelt width
6305–6309Bearing
ISO 9001 / MACertified · IMP
Usage
Usage
Impact (Buffer) Idler — a carrying idler with rubber- or PU-ringed rolls that absorbs the shock of material landing on the belt. It protects the belt and structure at loading points and is the simpler, cheaper alternative to a full buffer bed on moderate impacts.
Operating conditions
Operating conditions
| Working temperature | Ambient service range (-20 °C to +40 °C); sealed bearings and PU or ceramic parts tolerate wider material temperatures. |
|---|---|
| Dusty environment | Suitable — labyrinth or IP65 seals keep dust out of the bearings |
| Moisture & water | Suitable — IP65 sealing for outdoor, port, washdown and humid duty |
| Corrosive environment | Powder-coated for ordinary acid or alkali · Galvanized for coastal and semi-outdoor · Stainless for high-salinity and high-humidity sites |
| Certification | MA coal-mine safety certified versions available — confirm the certified SKUs for your project |
| Outdoor use | Suitable — coated and stainless options for coastal and weathering service |
Technical overview
Idlers are the rotating rollers that support the conveyor belt and the bulk load traveling on it. HBXM idlers cover belt widths up to 2400 mm and trough angles of 20 deg, 35 deg or 45 deg, with multi-labyrinth sealed bearings built for continuous duty in dust, moisture and fine powder.
Why use a self-aligning idler?
A self-aligning idler automatically corrects belt mistracking, reducing edge wear, spillage and unplanned downtime.
What bearing seals does HBXM use?
We use non-contact multi-labyrinth seals that keep grease in and keep dust, water and fine powder out for a long service life.
Can idlers handle high-capacity mining lines?
Yes. Our heavy-duty series is specified for mines, ports and power plants with high belt speeds, large lump sizes and continuous operation.
What are conveyor rollers?
Conveyor rollers, also called idlers, are the rotating cylinders that carry the belt and the material on it. HBXM makes them in steel, UHMW-PE, nylon and polyurethane to suit different loads, belt speeds and environments.
How much do conveyor rollers cost?
Roller price depends on diameter, length, material (steel, UHMW-PE, polyurethane) and order quantity. Send your conveyor specs — belt width, load and environment — and we will quote an exact price and lead time.
What is a polyurethane conveyor roller used for?
Polyurethane rollers resist abrasion, oils and impact better than steel and run quieter, so they suit wet, sticky or abrasive material and applications where belt marking matters.
Highlights
Features
Precision shell Ø
Diameter range Ø89–194 mm with radial runout ≤0.5 mm for smooth, low-resistance rotation.
Impact duty
Reinforced for high-drop, heavy-lump loading.
Belt-width coverage
Covers belt widths 500–1600 mm across standard conveyor sections.
Bearing size
Bearings 6305–6309 (C3 clearance) for long, stable service life.
Trough angle
Troughing angle 35–45 ° for material containment.
Multi-stage labyrinth sealing
LS / CS / DS seals block dust, moisture and fine material from reaching the bearing cavity.
Quality
1
Shell integrity
Verified Q235 / SS400 tube wall thickness for the rated load class.
2
Sealing reliability
Triple-labyrinth system keeps contaminants out of the bearing cavity.
3
Bearing life
C3 bearings chosen by load and speed for a long, stable service life.
4
Finish options
Coatings matched to dust, moisture and corrosive plant conditions.
FAQ
Frequently asked questions
Impact rollers or an impact bed?
Impact rollers suit moderate drops and allow material to fall through between the discs in sticky duty. Impact beds spread the load continuously and win on high drops, sharp lumps and wide belts.
What rubber compound is used?
Natural/synthetic blends selected for rebound and cut resistance, typically 60–70 Shore A. The compound matters more than the thickness for impact life.
How long do the discs last?
In coal or aggregate handling, expect 1–3 years depending on drop height and lump sharpness. Discs are replaceable.
Is a rubber-disc impact roller the same as a rubber roller?
On a conveyor, "rubber roller" usually means one of two things: the rubber-disc impact roller set at a loading point, or the rubber-lagged pulley at the drive. Both get their grip and their impact resistance from a vulcanised rubber surface rather than the steel shell under it. Our rubber rollers are moulded discs on a steel shaft in sealed TK housings, so only the rubber wears and the discs are replaceable.