What is the difference between drive and tail pulleys?
The drive pulley is powered by the motor and pulls the belt; the tail pulley is an unpowered redirect at the loading end, often with a take-up.
SNB · Pulleys
Upper Self-aligning Idler Set
上调心托辊组
A self aligning idler set that keeps the return strand centred and takes the edge wear out of the belt.
- SKU prefixPULLEYS-SNB
- MOQ1 pc
- Lead time1 month
- StandardSNB
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Choose the specs for your application. We will reply with pricing, FOB and lead time for your selection.
Current SKU: PULLEYS-SNB
Overview
Upper Self-aligning Idler Set at a Glance
200–800 mmPulley Ø
500–2400 mmBelt width
20–80 mmShaft Ø
ISO 9001 / MACertified · SNB
Usage
Usage
Carrying-Side Training Idler Set — a self-aligning idler group on the loaded (top) strand that corrects drift while the belt is carrying. Because top-strand mistracking spills material, this set keeps the load centred between transfers on long carrying runs. (Despite the pulley slug it is an idler group, not a pulley.)
Operating conditions
Operating conditions
| Working temperature | Ambient range (-20 °C to +40 °C); rubber or ceramic lagging rated about -20 °C to +80 °C. |
|---|---|
| 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
Pulleys drive, redirect and tension the conveyor belt across the system. HBXM pulleys are available from 200 mm to 1600 mm diameter with static or vulcanized rubber lagging, and are dynamically balanced for smooth running at high belt speeds.
Why add rubber lagging to a pulley?
Lagging increases friction so the belt does not slip, protects the shell from wear, and can be grooved to shed water and mud.
What is a motorized pulley?
A motorized pulley encloses the motor and gearbox inside the drum, giving a compact, sealed, low-maintenance drive for confined spaces.
How do I size a conveyor pulley?
Size by shaft and bearing load from belt tension and torque, then choose diameter for the target belt speed and lagging type.
What is a conveyor belt drive pulley?
A conveyor belt drive pulley is the powered drum that transmits motor torque to the belt through friction. HBXM drive pulleys use vulcanized rubber or ceramic lagging to grip the belt without slip.
Highlights
Features
Precision shell Ø
Welded drum Ø200–800 mm, machined and dynamically balanced for low vibration.
Self-aligning
Free-pivot set auto-centers the belt as it drifts.
Belt-width coverage
Covers belt widths 500–2400 mm across standard conveyor sections.
Shaft Ø
Shaft Ø20–80 mm machined for the keyway and bearing seat.
Custom lagging
Lagging PL / RB / BA vulcanized to the drum for no-slip grip.
Heavy-duty welded drum
Seamless steel pipe body with reinforced end discs for high torque transfer.
Quality
1
Drum integrity
Weld and wall checked for the rated torque and belt tension.
2
Lagging bond
Lagging vulcanized / bonded for no slip under full load.
3
Balance accuracy
Balanced to the required class for low vibration.
4
Finish options
Coatings for abrasive and corrosive plants.