Rotamill B-2.6 Industrial Blower 12.6kW 17HP 3500RPM Direct Drive Fan 460V

The Rotamill Type B-2.6 equipped with a 12.6 kW motor is the high-performance "flagship" configuration for this series. In industrial terms, 12.6 kW converts to approximately 16.9 HP (commonly marketed as 16 HP or 17 HP).

Because it is a direct-drive unit spinning at 3,500 RPM, this motor size provides the necessary torque to handle high static pressures without the "lag" or "slip" common in belt-driven fans.

Technical Specifications: Rotamill B-2.6 (12.6 kW)

• Manufacturer: Rotamill (Germany)
• 2005
• Motor Power: 12.6 kW (16.9 HP)
• Type: Direct Drive Centrifugal Blower
• Speed: 3,500 RPM (60 Hz configuration)
• Electrical: 460V | 3-Phase | 60Hz
• Full Load Amps (FLA): Approx. 22.0 – 24.0 Amps (@ 460V)
• Weight: Approximately 425 lbs (Unit weight varies slightly by motor brand)
• Year of Manufacture: Commonly found in mid-2000s (e.g., 2005) through 2015.
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Performance Data

At this power level, the B-2.6 is designed to be a "high-pressure" specialist.

• Airflow Capacity: Estimated 1,500 – 1,800 CFM.
• Static Pressure: Capable of generating 25" to 30" w.g. (water gauge). This is significantly higher than standard ventilation fans and is ideal for "scrubbing" air or pushing it through dense HEPA filters.
• Inlet/Outlet: Usually features a 10" to 11" circular inlet and a rectangular discharge (approx. 8" x 10").

Key Advantages of the 12.6 kW Build

• The 17 HP Advantage: Most blowers in this size class use standard 10 HP or 15 HP motors. The 12.6 kW (17 HP) motor gives the B-2.6 a "safety margin," allowing it to run at higher static pressures for longer durations without overheating.
• Precision German Engineering: Rotamill housings are often continuously welded and powder-coated, providing much better vibration dampening than bolted American utility sets.
• Direct-Coupled Reliability: By removing belts and pulleys, the 12.6 kW of power is delivered directly to the impeller, resulting in higher efficiency and zero belt maintenance.