Custom Belt Conveyor Wing and Guide Idler Rollers for Mine and Quarry Applications

The AstraRoll Technical Advantage

Engineering side-support and guide rollers for highly abrasive environments requires robust sealing and precise concentricity:

Impenetrable Labyrinth Sealing: Wing rollers operate on an angle, while guide rollers sit vertically. This exposes their lower bearings directly to falling dust, rain, and abrasive slurry. AstraRoll utilizes a proprietary IP66/IP67 multi-stage labyrinth seal packed with premium lithium grease, completely isolating the C3 precision ball bearings from quarry contaminants.

Anti-Fray Edge Protection: For our vertical guide rollers, the steel tube is precision-machined with smooth, chamfered edges and boasts an extremely low rolling resistance. When the belt drifts and contacts the guide roller, it spins instantly with the belt, gently nudging it back into alignment without cutting or fraying the rubber cover.

Seamless Drop-In Replacement: You do not need to replace your entire idler frame when only the outer wing roller wears out. AstraRoll manufactures replacement wing rollers to exact CEMA and DIN dimensions. We customize the shaft length, diameter, and milled slots so your maintenance crew can swap out the damaged roller in minutes.

Low Total Indicated Runout: A poorly balanced wing roller will vibrate, accelerating bearing wear and creating loud operational noise. Our tubes are CNC-lathed and robotically welded to ensure a TIR of ≤ 0.5mm, delivering whisper-quiet, vibration-free rotation even on high-speed aggregate belts.

Key Specifications

Please note: Every AstraRoll Wing and Guide Roller is custom-manufactured based on your specific frame dimensions and belt width.

Outer Diameter (O.D.): 63mm, 76mm, 89mm, 102mm, 114mm, 127mm, 133mm, 152mm, 159mm.
Face Length: Custom manufactured from 150mm to 1,000mm+ (depending on trough angle and belt width).
Bearing Sizes: 6204, 6205, 6305, 6306, 6307 (Deep Groove Ball Bearings, C3 Clearance).
Shaft Diameter: 20mm, 25mm, 30mm, 35mm, 40mm.
Standard Compliance: CEMA B, C, D, E, DIN, ISO, JIS, or Custom OEM.

Primary Applications

AstraRoll Wing and Guide Idlers are the first line of defense for belt preservation in bulk handling:

• Mining & Ore Processing: High-impact wing rollers supporting heavy copper, gold, and iron ore on deep-troughed (35° to 45°) conveyor frames.
• Quarries & Aggregates: Reliable side support and tracking for crushed stone, gravel, and sand conveyors operating in extremely dusty conditions.
• Overland & Yard Conveyors: Vertical guide rollers strategically placed to prevent belt drift caused by high winds or asymmetrical loading.
• Mobile Crushers & Screeners: Heavy-duty replacement rollers for compact, high-vibration mobile material processing machinery.

Why Choose AstraRoll?

1. Custom Shaft Configurations

Because different conveyor frames secure wing and guide rollers differently, off-the-shelf rollers rarely fit perfectly. AstraRoll operates a dedicated CNC shaft-machining center. Whether your frame requires open-end slots, closed milled flats, internal female threads for bolt-on guide rollers, or step-down journals, we machine the shaft ends to your exact 2D/3D CAD drawings.

2. Total Indicated Runout (TIR) & Dynamic Balancing 

An idler that is out-of-round will act like a hammer against the bottom of your conveyor belt, generating severe noise, spilling material, and destroying bearings. AstraRoll precision-machines our steel tubes and welds bearing end-housings using automated hydraulic press fixtures. This guarantees an ultra-low Total Indicated Runout (TIR ≤ 0.5mm) and meets ISO 1940 Grade G2.5 dynamic balancing standards, ensuring smooth, whisper-quiet operation on high-speed belts running over 4.5 m/s.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.