Why use an impact bed at the loading zone?
It spreads the impact load across a wide support so the belt is not pinched between lumps and idlers, preventing premature belt and idler failure.
BAR · Buffers
Buffer Idler Set
缓冲托辊组
Impact idlers for belt conveyor loading zones, built with UHMW-PE, polyurethane or impact-rubber bars to cushion high-drop material before it reaches the belt carcass.
- SKU prefixBUFFERS-BAR
- MOQ10 pcs
- Lead time1 month
- StandardBAR
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Choose the specs for your application. We will reply with pricing, FOB and lead time for your selection.
Current SKU: BUFFERS-BAR
Overview
Buffer Idler Set at a Glance
1200–1800 mmLength
100–150 mmWidth
UHMW PE / Polyurethane / Impact rubberBar
ISO 9001 / MACertified · BAR
Usage
Usage
Buffer Idler Set — a group of rubber- or polyurethane-ringed idlers set under the loading point. The resilient rings compress to absorb the shock of ore, clinker or rock falling onto the belt, cutting impact by up to about 60% so the belt, idlers and splices are not punched through or broken. Used where the drop height is moderate (typically under roughly 3 m) and lump size is manageable, at crusher discharges and transfer points.
Operating conditions
Operating conditions
| Working temperature | Ambient range (-20 °C to +40 °C); UHMW-PE and PU impact bars rated about -40 °C to +80 °C. |
|---|---|
| Dusty environment | Suitable — UHMW-PE and rubber impact bars resist dust and fines in the loading zone |
| Moisture & water | Suitable — UHMW-PE and rubber bars are unaffected by water; coated steel frames for wet 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
Impact beds and buffer bars absorb the shock of material falling onto the belt at loading points. HBXM bars use a UHMW top layer over energy-absorbing rubber to protect the belt, seal and idlers from impact damage.
What is the difference between an impact bar and an impact bed?
An impact bar is a single replaceable segment; an impact bed is a full-width frame of joined bars that supports the whole loading zone.
What is the UHMW layer for?
UHMW has very low friction so the belt slides smoothly over the bar instead of dragging, which reduces wear and power draw.
How long do buffer bars last?
Service life depends on tonnage and lump size; in typical mining duty the UHMW surface runs for many months before bar replacement.
Highlights
Features
Length
Length 1200–1800 mm to suit the chute / frame.
Width
Width 100–150 mm for the load zone.
Bar material
Bars in UHMW PE / Polyurethane / Impact rubber for low friction and impact.
UHMWPE slide bars
Low-friction surface protects the belt during load impact.
Energy-absorbing rubber
Cushions heavy, sharp or high-drop material at the loading point.
Modular cassette design
Sections bolt together for any belt width and layout.
Quality
1
Bar integrity
UHMW grade verified for impact and abrasion resistance.
2
Cushion reliability
Rubber compound tuned for consistent energy absorption.
3
Frame strength
Welded structure load-tested to drawing.
4
Finish options
Coatings for wet, corrosive and outdoor duty.
FAQ
Frequently asked questions
Where are impact idlers used?
At the loading point, directly under the chute, where the material drop would otherwise hammer the belt and the carrying idlers. They are usually fitted in place of the normal troughing set for the first few metres.
How many impact idler sets does a loading zone need?
Depends on drop height and lump size — typically one to three sets, plus an impact bed if the drop exceeds about three metres or the material is sharp.
Can HBXM match an existing impact idler set?
Yes. Send the drawing, the belt width and the shaft or bracket dimensions and we will match the set, including the bar compound and the mounting centres.