How do self-aligning idlers work?
A guide roll senses belt edge pressure and pivots the whole idler set so the belt is nudged back toward the centerline.
ALN · Training Idlers
Conical Training Idler Set
锥形纠偏托辊组
Conical training idlers that use differential surface speed to steer the belt back to centre — a strong, mechanical correction with no sensors and no maintenance.
- SKU prefixTRACKING-ALN
- MOQ10 pcs
- Lead time1 month
- StandardALN
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Current SKU: TRACKING-ALN
Overview
Conical Training Idler Set at a Glance
108–159 mmIdler Ø
500–1600 mmBelt width
DTII / TD75 / ISOStandard
ISO 9001 / MACertified · ALN
Usage
Usage
Conical Training Idler Set — a self-aligning set using tapered rolls whose diameter difference pushes a drifting belt back to centre. It is the mechanical heart of automatic training on both carrying and return strands without power or air, and is gentler on the belt edge than hard-friction trainers.
Operating conditions
Operating conditions
| Working temperature | Ambient service range (-20 °C to +40 °C); sealed bearings rated for the same band. |
|---|---|
| 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
Training idlers automatically steer the belt back to center when it begins to drift. HBXM self-aligning idlers use a pivoting frame that responds to belt edge force, correcting mistracking before it damages the belt or structure.
Where should training idlers be placed?
Place them every 10 to 15 idlers along both carry and return strands, especially after transfers and on long centers.
Do they need a power supply?
No. They are fully mechanical and react to belt forces, so they work without sensors, wiring or controls.
How often do they need adjustment?
Once installed they are self-correcting and typically need no routine adjustment, only inspection during planned maintenance.
Highlights
Features
Idler Ø options
Idler diameters Ø108–159 mm to match your troughing geometry.
Conical shape
Tapered rolls auto-center a drifting belt.
Belt-width coverage
Covers belt widths 500–1600 mm across standard conveyor sections.
Spiral / rubber disc rolls
Guide the belt back to center automatically as it drifts.
Free-pivot frame
Responds to mistracking without external power.
Heavy-duty shaft
Machined for smooth rotation under load.
Quality
1
Guidance reliability
Geometry tuned for effective, stable centering.
2
Bearing protection
Seals keep contaminants from the cavity.
3
Frame strength
Welded / pivoted structure load-tested.
4
Finish options
Coatings for abrasive and wet duty.