The Kaeser FSD Series delivers continuous-duty compressed air for heavy industrial manufacturing facilities requiring 1,243 to 2,030 acfm at operating pressures from 125 to 217 psig. Built with massive low-speed SIGMA PROFILE® airends, gearless 1:1 direct coupling, and super-premium efficiency IE4 drive motors, the FSD Series minimizes specific power consumption across full-load enterprise utility operations..

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• SIGMA CONTROL Automation: The SIGMA CONTROL continuously tracks operating metrics, predicts maintenance needs, and integrates with factory management systems or the SIGMA AIR MANAGER 4.0 master controller.
  Standard Anybus Interface: It connects to your PLC or SCADA network via interchangeable communication modules.
  Supported Protocols: Modbus TCP, PROFIBUS DP, PROFINET IO, EtherNet/IP, BACnet/IP, and OPC UA. 
• Low-Speed SIGMA PROFILE® Airends: Turning Kaeser’s largest rotor profile at reduced RPMs reduces internal turbulence and slip, delivering maximum cfm output per kilowatt.
• IE4 Super-Premium Efficiency Motors: Totally Enclosed Fan Cooled (TEFC) motors with Class F insulation protect electrical components in demanding industrial environments while cutting total lifecycle electricity expenses.
• CAGI Certified Performance: Energy efficiency performance is independently verified through the Compressed Air and Gas Institute's Rotary Screw Compressor Performance Verification Program.

• True 1:1 Direct Drive Coupling: Connects the motor shaft directly to the airend shaft without step-up gears or drive belts. This eliminates transmission losses, gear wear, and routine belt tensioning service. 
• Split Cooling Airflow Design: Dedicated air intake zones cool the heat exchangers, drive motor, and electrical enclosure separately. This prevents preheating, extends fluid life, and lowers approach temperatures for downstream moisture removal. 
• External Cooler Placement: Large cooling bundles are mounted on the exterior face of the cabinet, allowing visual inspection and high-pressure cleaning without disassembling the cabinet enclosure.

• Air- or Water-Cooled Options:
  Air-Cooled: Variable-speed radial fans pull ambient air across exterior coolers and exhaust through the cabinet roof with high static pressure, eliminating the need for booster fans in ductwork. Operating noise remains low at 79 to 80 dB(A) despite 450 HP output.
  Water-Cooled: Equipped with corrosion-resistant stainless steel plate-type heat exchangers as standard equipment (with mechanically cleanable, seawater-resistant CuNi10Fe shell-and-tube exchangers available for dirty process loops).
• Recover Up to 96% of Input Energy: Running a 450 HP compressor full-time consumes over $300,000 in power annually. With optional factory-installed plate-type heat exchangers, up to 76% of electrical input energy can be recovered from compressor fluid to heat water up to 160°F for boiler feed, plant heating, or washdown processes. Ducting exhaust air allows total energy recovery of up to 96%.

• Download our Technical White Paper: "Turning Air Compressors into an Energy Source" (PDF) to model thermal ROI.

• Automotive & Aerospace Manufacturing: Supplies continuous, plant-wide motive power for large multi-acre assembly complexes, automated robotic framing lines, and high-volume pneumatic conveyance. 
• Primary Baseload Utility: Functions as the non-stop, 100% full-load core of centralized compressor rooms, paired with a variable-speed (SFC) unit managed by a SIGMA AIR MANAGER 4.0 master controller to eliminate part-load idling waste. 
• Steel, Glass, & Foundries: Engineered to run continuously in heavy-particulate, high-heat environments where two-stage filtration and split cooling airflow protect mechanical components. 
• Chemical & Petrochemical Processing: Delivers high CFM for air separation, catalytic processes, and plant-wide pneumatic instrumentation with complete SCADA network integration.

• Compressed Air Applications by Industry

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