These return idlers for belt conveyor units adopt Q235B high-strength welded steel for roller shell, paired with 45# solid steel shaft and pre-filled long-life sealed deep-groove ball bearings. Multi-stage inner-outer labyrinth sealing construction delivers IP55 dust-proof and water-proof capability, adapting to operating temperature from -40℃ up to 90℃. Surface finishing includes anti-rust spray painting, raw black steel finish, rubber disc or spiral assembly for sites with sticky material carry-back.
Fully compatible with TD75, DTII, DTII(A), DY mobile conveyor specifications, supporting belt width ranging 500-2400 mm. Roller diameter, shaft dimension and overall roller length can be adjusted according to actual site requirements.
Project Delivery Process
Technical Confirmation
Confirm belt width, idler type, roller dimension, quantity and field installation constraints from customer drawings or technical datasheets; lock final configuration and issue formal quotation.
Production Arrangement
Execute steel tube cutting, shaft fine machining, bearing press-fitting, seal assembling and bracket welding. Conduct in-process dimension sampling inspection for each production lot.
Factory Performance Inspection
Randomly select finished idler samples for bench performance test; check welding quality, coating appearance and mounting dimensional tolerance.
Packing Procedure
Wrap each idler with anti-rust waterproof PE film; stack and secure bulk goods on heavy-duty steel pallets to avoid collision during ocean transit. Small-batch orders adopt fumigated export wooden cases with shock-absorbing filler.
Document & Shipment
Generate mill test certificate, batch inspection record and packing list for import customs-clearance; complete container loading based on total cargo volume.
Hand-over & Technical Guidance
Hand over installation specification files; provide remote online consultation while customers carry out field assembly and layout.
Product After-sales
1. Quality Warranty: Under proper installation and normal operating circumstances, idler assemblies enjoy standard warranty covering manufacturing defects. Failures caused by man-made impact, corrosive medium erosion or incorrect installation will not be covered.
2. Remote Technical Assistance: Provide online consultation for idler installation spacing, bracket layout adjustment and routine fault elimination during on-site commissioning phase.
3. Spare-parts Supply: Maintain stock of wearing components including bearings, sealing assemblies and rubber discs, support sea or air express supplementary delivery.
4. Paid On-site Service: Large-scale projects can apply for optional paid field service including on-site troubleshooting and operator maintenance training.
5. Routine Maintenance Guidance: Deliver periodic inspection checklist; remind clients to check roller rotation flexibility and bolt fastening status to extend service life of whole conveyor return-strand system.
FAQ
Q: Which variant should be selected if sticky fines frequently adhere to the underside of return-side belt?
A: Rubber-disc self-cleaning or spiral-cleaning return idlers are recommended. These structures can shake off adhered residues and reduce material accumulation on roller shell surface.
Q: What main technical information needs submitting for quotation of return idlers for belt conveyor?
A: Please provide conveyor model, belt width, idler structural type, roller dimension parameters, site environmental conditions and total order quantity for accurate configuration and quotation.
Q: Is it feasible to mix-install these return idlers together with return-side self-aligning idler groups?
A: Yes. Their mounting hole dimensions conform to industry-wide standards, so mixed arrangement can be realized without modifying original support frame structures.
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