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It supports conveyor belts with width 800-2400mm and handles radial loads up to 5000N, preventing belt deviation and reducing friction (coefficient < 0.02). Suitable for harsh mining environments (dust, moisture, impact), it is essential for maintaining conveyor system efficiency and reducing downtime.
High-Load Bearing Capacity: Seamless steel tube (wall thickness 4-8mm) and double-row spherical roller bearings withstand radial loads up to 5000N and axial loads up to 1000N. In a 1200mm-wide coal conveyor, each roller supports 80kg of material weight without deformation. The tube’s roundness error < 0.5mm ensures uniform load distribution.
Sealed & Dust-Proof Design: Triple labyrinth seals + rubber oil seals prevent dust and water intrusion (IP67 protection rating). In a dusty iron ore conveyor, it maintained bearing lubrication for 18 months vs. 6 months for standard rollers. Seals are resistant to mineral oil and acid, with no aging in 24 months of use.
Low Friction Operation: Precision-ground bearing surfaces (Ra < 0.4μm) and high-quality lithium grease reduce friction coefficient to < 0.02, cutting conveyor motor energy consumption by 15%. A 500-meter conveyor system saved 12,000 kWh/year after replacing old rollers.
Corrosion & Impact Resistance: 304 stainless steel or galvanized steel options. Galvanized rollers (zinc coating thickness 80μm) resist corrosion in humid mines (corrosion rate < 0.01mm/year); 316L stainless steel suits coastal mines with high chloride content (salinity 35‰). The tube end caps are welded via argon arc welding, with impact resistance up to 100J.
Conveyor Load-Bearing: Idler rollers for mining belt conveyors. A South African platinum mine installed 1500 galvanized rollers in its 1000-meter conveyor system, reducing belt deviation incidents by 90% and cutting maintenance time by 600 hours/year.
Belt Guidance: Return rollers and aligning rollers for underground conveyors. A Chinese underground coal mine used aligning rollers with self-adjusting brackets, correcting belt deviation within 50mm of centerline and preventing edge wear (belt service life extended by 12 months).
Heavy-Duty Transportation: Drive rollers for high-capacity conveyors. An Australian bauxite mine used 240mm-diameter drive rollers, transmitting torque up to 10,000 N·m to move 600 t/h of bauxite—roller surface rubber coating (shore hardness 75A) increased friction with the belt, avoiding slippage.
Q: What roller diameter fits 1800mm-wide conveyor belts?
A: 159mm diameter is standard for 1800mm-wide belts. For heavy loads (＞400 t/h), choose 194mm diameter to increase load capacity by 30%. The roller length should exceed belt width by 100mm (each side 50mm) to prevent edge damage.
Q: How often to replace roller lubricant?
A: Lubricate every 12-18 months under normal conditions. In high-temperature mines (＞60°C), shorten to 6-9 months; in dusty environments, use grease with anti-dust additives (NLGI grade 2). Over-lubrication causes seal damage, while under-lubrication increases friction by 50%.
Q: Can it be used in underground explosive environments?
A: Yes, explosion-proof variants (complying with ATEX II 2G Ex d IIB T4) are available. These rollers use anti-spark bearing materials and static-dissipative paint, eliminating ignition risks in coal dust or methane-rich environments. They are certified for underground coal mine use.
Q: How to identify a faulty roller?
A: Look for abnormal noise (grinding or squeaking), increased vibration (＞0.5g), or uneven belt wear. Use infrared thermometers to check bearing temperature—temperatures exceeding 80°C indicate lubrication failure or bearing damage. Replace faulty rollers within 48 hours to avoid belt damage.
It supports conveyor belts with width 800-2400mm and handles radial loads up to 5000N, preventing belt deviation and reducing friction (coefficient < 0.02). Suitable for harsh mining environments (dust, moisture, impact), it is essential for maintaining conveyor system efficiency and reducing downtime.
High-Load Bearing Capacity: Seamless steel tube (wall thickness 4-8mm) and double-row spherical roller bearings withstand radial loads up to 5000N and axial loads up to 1000N. In a 1200mm-wide coal conveyor, each roller supports 80kg of material weight without deformation. The tube’s roundness error < 0.5mm ensures uniform load distribution.
Sealed & Dust-Proof Design: Triple labyrinth seals + rubber oil seals prevent dust and water intrusion (IP67 protection rating). In a dusty iron ore conveyor, it maintained bearing lubrication for 18 months vs. 6 months for standard rollers. Seals are resistant to mineral oil and acid, with no aging in 24 months of use.
Low Friction Operation: Precision-ground bearing surfaces (Ra < 0.4μm) and high-quality lithium grease reduce friction coefficient to < 0.02, cutting conveyor motor energy consumption by 15%. A 500-meter conveyor system saved 12,000 kWh/year after replacing old rollers.
Corrosion & Impact Resistance: 304 stainless steel or galvanized steel options. Galvanized rollers (zinc coating thickness 80μm) resist corrosion in humid mines (corrosion rate < 0.01mm/year); 316L stainless steel suits coastal mines with high chloride content (salinity 35‰). The tube end caps are welded via argon arc welding, with impact resistance up to 100J.
Conveyor Load-Bearing: Idler rollers for mining belt conveyors. A South African platinum mine installed 1500 galvanized rollers in its 1000-meter conveyor system, reducing belt deviation incidents by 90% and cutting maintenance time by 600 hours/year.
Belt Guidance: Return rollers and aligning rollers for underground conveyors. A Chinese underground coal mine used aligning rollers with self-adjusting brackets, correcting belt deviation within 50mm of centerline and preventing edge wear (belt service life extended by 12 months).
Heavy-Duty Transportation: Drive rollers for high-capacity conveyors. An Australian bauxite mine used 240mm-diameter drive rollers, transmitting torque up to 10,000 N·m to move 600 t/h of bauxite—roller surface rubber coating (shore hardness 75A) increased friction with the belt, avoiding slippage.
Q: What roller diameter fits 1800mm-wide conveyor belts?
A: 159mm diameter is standard for 1800mm-wide belts. For heavy loads (＞400 t/h), choose 194mm diameter to increase load capacity by 30%. The roller length should exceed belt width by 100mm (each side 50mm) to prevent edge damage.
Q: How often to replace roller lubricant?
A: Lubricate every 12-18 months under normal conditions. In high-temperature mines (＞60°C), shorten to 6-9 months; in dusty environments, use grease with anti-dust additives (NLGI grade 2). Over-lubrication causes seal damage, while under-lubrication increases friction by 50%.
Q: Can it be used in underground explosive environments?
A: Yes, explosion-proof variants (complying with ATEX II 2G Ex d IIB T4) are available. These rollers use anti-spark bearing materials and static-dissipative paint, eliminating ignition risks in coal dust or methane-rich environments. They are certified for underground coal mine use.
Q: How to identify a faulty roller?
A: Look for abnormal noise (grinding or squeaking), increased vibration (＞0.5g), or uneven belt wear. Use infrared thermometers to check bearing temperature—temperatures exceeding 80°C indicate lubrication failure or bearing damage. Replace faulty rollers within 48 hours to avoid belt damage.
