High Efficiency 7.5 to 220kw Wholesale Commercial Rotary Screw Type Air Compressors for Sale. High Transmission Efficiency: Toothed V-belt provides gear drive and transmission efficiency as high as over 98%. Advanced Air End Design: Imported DLOL air end with advanced profile design for superior performance. Premium Motor Protection: Totally TEFC IP54/IP55 motor with Class F insulation protects against dust and chemicals. High Filtration Efficiency: Two-stage dust removal system achieves up to 99.9% efficiency even in heavy-duty environments. Oil Consumption Reduction: Precise spin-oil separator minimizes oil consumption and guarantees outlet gas purity. Automatic Belt Tensioning: Flexible belt automatically tensioned to minimize pressure and power loss. Durable Stainless Hoses: High and low temperature resistant, high pressure resistant stainless steel hoses. Energy Saving Cooler: High quality aluminum material with alternating expression cooler fins for perfect radiating.