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THM – BMK6/6K – Orbital Motors

Tackle your most extreme high-torque applications with the massive fluid power of the THM BMK6/6K Series Orbital Hydraulic Motor. Engineered for heavy-duty industrial and mobile machinery, this series offers an incredible displacement range scaling from 200 all the way up to 1000 cc/rev. Sustaining maximum pressures up to 200 bar, the BMK6/6K features a highly resilient shaft seal explicitly designed to bear extreme back pressure, allowing for highly complex circuit integrations. Combined with advanced disc distribution flow and heavy-duty tapered roller bearings, this motor provides the unrelenting torque, high volumetric efficiency, and rugged structural integrity required to drive massive mechanical loads.

Core Technical Specifications:-

  • Motor Architecture: Orbital Hydraulic Motor (Advanced Geroler Gear Set)
  • Displacement Range: 200 to 1000 cc/rev
  • Maximum Operating Pressure: Up to 200 bar
  • Design Profile: Massive Displacement, High Back-Pressure Tolerance


Key Features & Engineering Advantages:-

  • Extreme Displacement Capacity: Offering massive internal volumes up to 1000 cc/rev, this motor is purposefully built to generate immense rotational torque for the heaviest mobile and industrial applications.
  • High Back-Pressure Shaft Seal: Features a highly specialized, resilient shaft seal engineered to safely withstand extreme back pressures. This makes the BMK6/6K incredibly versatile, allowing it to be safely wired in series with other motors without risking seal blowout.
  • Tapered Roller Bearings: The output shaft is fortified with premium tapered roller bearings. This allows the motor to effortlessly absorb and sustain massive external radial and axial forces directly from the driven machinery, eliminating the need for external bearing blocks.
  • Advanced Disc Distribution Flow: Utilizes a highly sophisticated disc distribution valve system that actively and automatically compensates for internal wear. This intelligent design guarantees peak volumetric efficiency and remarkably smooth operation over a long service life.
  • Low-Friction Geroler Gear Set: Manufactured using state-of-the-art precision devices, the internal Geroler gear set requires exceptionally low start-up pressure, translating to highly efficient energy use and pulsation-free rotation right from the start.
  • High-Pressure, High-Torque Casing: The rugged outer housing is structurally engineered to safely contain continuous 200 bar operations, providing a secure, durable envelope for high-torque generation.


Ideal Industry Applications:-

The massive internal displacement, extreme load-bearing capacity, and high back-pressure tolerance of the BMK6/6K Series make it the ultimate hydraulic drive for:

  • Large-Scale Agricultural and Forestry Machinery (Harvesters, Feller Bunchers)
  • Heavy-Duty Marine Deck Machinery (Massive Winches, Anchor Hoists)
  • Mining, Trenching, and Heavy Earthmoving Equipment
  • High-Torque Industrial Mixers, Grinders, and Heavy Conveyors

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