Industrial Oil-Cooled Drum Motors for Heavy-Duty Conveyor Systems

The AstraRoll Technical Advantage

Engineering a heavy-duty motorized pulley requires uncompromising thermal management and torque capacity:

Superior Oil-Cooled Heat Dissipation: The internal oil bath acts as a highly efficient liquid coolant. It continuously circulates around the motor stator and gears, absorbing heat and transferring it to the rotating steel drum. This allows the motor to operate at peak loads continuously without triggering thermal overload switches.

Hermetic Sealing & Protection: Mining and heavy industrial environments are filled with abrasive dust and moisture. AstraRoll drum motors are hermetically sealed (IP66/IP67), ensuring the internal oil stays in and abrasive contaminants stay out, virtually eliminating the risk of gear failure.

High-Torque Planetary Gearing: To start a fully loaded aggregate conveyor from a dead stop, immense starting torque is required. We utilize precision-machined, hardened alloy steel planetary gears that distribute the load across multiple gear teeth, preventing stripping and ensuring smooth, high-torque power transmission.

Space-Saving Safety: By integrating the entire drive system inside the roller, you eliminate bulky external motors, hazardous chain drives, and exposed sprockets. This saves critical walkway space in cramped industrial plants and drastically improves worker safety.

Primary Applications

AstraRoll Industrial Oil-Cooled Drum Motors are engineered for the world's most demanding continuous-duty applications:

• Mining & Quarrying: Driving massive rubber belts conveying crushed rock, iron ore, and gravel over long distances.
• Power Generation: Powering coal-handling conveyors and ash-removal systems in extreme-temperature environments.
• Cement & Steel Mills: Transporting raw limestone, clinker, and heavy metal scrap.
• Heavy Pallet Logistics: Driving heavy-duty roller chains and belts in automotive assembly and heavy machinery warehouses.

Key Specifications

Please note: Every AstraRoll Oil-Cooled Drum Motor is custom-engineered based on your specific belt width, tonnage, and speed requirements.

Outer Diameter (O.D.): Custom from 216mm up to 1,000mm+.
Face Length: Custom manufactured from 400mm up to 2,500mm+.
Power Output: 1.5 kW up to 55 kW+ (2 HP to 75+ HP).
Voltage Options: 380V / 460V / 575V (Three-Phase AC, VFD compatible).
Cooling Medium: Premium High-Temperature Synthetic Gear Oil.
Ingress Protection: IP66 or IP67.

Why Choose AstraRoll?

1. Explosion-Proof Certification Capabilities

For underground coal mining, grain silos, or chemical plants where combustible dust and gases are present, standard motors pose a severe ignition risk. AstraRoll can engineer our oil-cooled drum motors with specialized flame-proof enclosures and strict ATEX / Ex d certifications, ensuring absolute safety in volatile industrial environments.

2. Factory-Vulcanized Heavy Lagging

An oil-cooled motor generates massive torque, which is useless if the steel drum slips against the belt. AstraRoll provides in-house hot-vulcanized rubber lagging. We can apply up to 20mm of ultra-durable NBR rubber or Ceramic-embedded lagging, complete with deep diamond grooving to channel away mud and water, guaranteeing 100% torque transfer in the harshest conditions.

Frequently Asked Questions (FAQs)

Q: Do I need to perform maintenance or change the oil inside the drum motor?
A: Yes. Unlike fractional-horsepower lightweight drum motors that are "sealed for life" with grease, heavy-duty oil-cooled drum motors require periodic oil changes. AstraRoll designs these motors with easily accessible oil fill and drain plugs on the end housings. The first oil change is typically required after 500 hours of break-in operation, and subsequently every 10,000 operational hours (or as recommended based on your load conditions).

Q: Can I test-run the oil-cooled drum motor on the floor without a conveyor belt attached?
A: No, absolutely not for prolonged periods. The motor relies on the conveyor belt to act as a radiator. The internal oil transfers heat to the steel shell, and the moving belt pulls that heat away. Running the motor continuously without a belt wrapping around it will cause the oil to rapidly overheat, which can damage the internal stators and seals.

Q: Can this drum motor be controlled by a Variable Frequency Drive (VFD)?
A: Yes. The three-phase AC induction motors housed inside our oil-cooled drums are fully compatible with VFDs, allowing you to seamlessly control acceleration, deceleration, and running speeds of your heavy-duty conveyor line.

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.