What is an idler frame?
It is the welded structure that mounts the idler rolls at the correct spacing and trough angle and bolts to the conveyor stringers.
FST · Frames
紧固件套件
Conveyor fasteners and bolt kits sized for idler frames, bearing housings and stringer assemblies — hot-dip galvanised or stainless for wet and corrosive duty.

Choose the specs for your application. We will reply with pricing, FOB and lead time for your selection.
Current SKU: FASTENING-FST
Overview
Usage
Fastener Kit — the graded bolts, nuts, washers and inserts that assemble idler stations, brackets and stringers into the conveyor structure. Properly torqued, they keep every component seated under vibration and load and are the foundation that stops the whole line from working loose in service.
Operating conditions
| Working temperature | Ambient service range (-20 °C to +40 °C); the coating protects the steel, stainless for aggressive sites. |
|---|---|
| Dusty environment | Suitable — all-steel structure with no bearings or seals to contaminate |
| Moisture & water | Suitable — hot-dip galvanized or stainless frames for outdoor, port and washdown service |
| 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 |
Idler frames and structures hold the rolls in alignment and transfer belt loads into the foundations. HBXM supplies carrying, return and training frames in galvanized or painted steel, cut and drilled to your belt width and trough angle.
It is the welded structure that mounts the idler rolls at the correct spacing and trough angle and bolts to the conveyor stringers.
Give us belt width, trough angle, idler arrangement and stringer spacing; we cut and drill to match so installation is bolt-on.
We can ship loose sets for container savings or pre-welded frames for faster site erection, depending on your logistics.
Galvanizing suits outdoor and corrosive sites; painted frames are fine for enclosed or dry plants and cost less.
Highlights
Bolts, nuts and washers matched to the roller and frame holes.
Zinc or hot-dip galvanized for outdoor and coastal plants.
Channel and box sections built to drawing.
Field-adjustable or fixed assembly per site need.
Jig-drilled for fast, aligned roller mounting.
Hot-dip or powder coat for outdoor service.
Welds inspected for load-path continuity.
Holes and spans match the approved drawing.
Steel grade verified per order.
Coatings for weather and corrosion exposure.