Kaishan Compressors KRSD-75 Rotary Screw Air Compressor

357 CFM Direct Drive Output for Industrial Production Lines The Kaishan KRSD-75 rotary screw air compressor eliminates gearbox maintenance with its patented 1:1 direct drive system while delivering industrial-grade performance. You get consistent air flow for your pneumatic tools and equipment with zero transmission losses. The 75 HP direct drive compressor runs at just 75 dBA while the oversized coolers handle ambient temperatures up to 122°F without breaking a sweat. Variable Speed Rotary Compressor Technology The SKK Series airend with asymmetric 5/6 rotor profile matches motor speed to your exact air demand, delivering up to 40% energy savings with the Variable Speed model. Direct Drive System — belt replacement costs → eliminated with 1:1 ratio direct connection Variable Speed Control — energy waste from oversized compressors → automatic speed matching saves up to 40% 3-Stage Oil Separation — oil carryover contamination → clean air with just 3 PPM oil content IE3 Premium Motor — high electric bills → maximum efficiency with TEFC IP54 protection Duplex SKF Bearings — premature bearing failure → extended service life with premium components 316 Stainless Steel Piping — corrosion and leaks → long-term reliability with marine-grade materials Oversized Coolers — overheating shutdowns → continuous operation in 122°F ambient conditions Kaishan KRSD-75 Direct Drive Rotary Air Compressor Specifications Power 75 HP (55 kW) Motor Efficiency IE3 Premium Efficiency Drive Type Direct Drive (1:1 Ratio), No Gearbox Airend SKK Series, Asymmetric 5/6 Rotor Profile CFM at 115 PSI (Fixed Speed) 357 CFM CFM at 125 PSI (Fixed Speed) 352 CFM CFM at 115 PSI (Variable Speed) 364 CFM CFM at 125 PSI (Variable Speed) 341 CFM CFM at 150 PSI (Variable Speed) 313 CFM Max Pressure 125 PSI (Fixed Speed) / 150 PSI (Variable Speed) Sound Level 75 dBA Voltage 208/230/460V, 3-Phase, 60 Hz Motor Frame TEFC (IP54), IEC Frame Motor Insulation Class F Bearings Duplex SKF Bearings (Discharge) Control Panel MAM-200 Digital (Fixed Speed) / KTL-8000 (Variable Speed) Control Tubing 316 Stainless Steel Oil Separator 3-Stage Tangential, 3 PPM Carryover Aftercooler Single Pass, Oversized for 122°F (50°C) Ambient Starter WYE Delta Standard Weight (Fixed Speed) 3,549 lbs / 1,610 kg Weight (Variable Speed) 3,867 lbs / 1,754 kg Dimensions FS (L×W×H) 77 × 46 × 62 in Dimensions VSD (L×W×H) 81 × 46 × 71 in Certifications CAGI, UL (cUL), ASME Available Configurations Optional Tank Mount, Integrated Dryer, and Tank + Dryer packages available. Technical Documents KRSD Product Datasheet KRSD Fixed Speed Instruction Manual KRSD Variable Speed Instruction Manual MAM-200 Control Panel Manual KTL-8000 VSD Control Manual KRSD 60-75 Fixed Speed Installation Drawing KRSD-75 Fixed Speed Spec Sheet KRSD-75 Variable Speed Spec Sheet For complete specifications, download the technical data sheet above. Kaishan KRSD-75 75 HP Rotary Screw Compressor Video