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.
COM · Idlers
Comb Idler
梳型托辊
Rubber disc return rollers that shed sticky material from the return strand and shrug off impact damage that would dent a steel shell.
- SKU prefixIDLERS-COM
- MOQ100 pcs
- Lead time1 month
- StandardCOM
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Current SKU: IDLERS-COM
Overview
Comb Idler at a Glance
89–159 mmShell Ø
800–1600 mmBelt width
6205–6306Bearing
ISO 9001 / MACertified · COM
Usage
Usage
Comb (Cleaning) Idler — a plain return idler with spaced rubber comb rings that break up and shed material clinging to the belt at the tail or return. By stopping buildup it prevents the belt from riding up on a fat layer and mistracking at transfer points; used on sticky, wet burdens.
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 Ø89–159 mm with radial runout ≤0.5 mm for smooth, low-resistance rotation.
Comb design
Interleaved rolls shed sticky carryback automatically.
Belt-width coverage
Covers belt widths 800–1600 mm across standard conveyor sections.
Bearing size
Bearings 6205–6306 (C3 clearance) for long, stable service life.
Multi-stage labyrinth sealing
LS / CS / DS seals block dust, moisture and fine material from reaching the bearing cavity.
Concentric press-fit housing
Cold-pressed stamped housings deliver a permanent, aligned seat on the tube ends.
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.