Transmissions & Pumps

Duraforce HPV Closed Lood Pump

The DuraForce HPV closed loop piston pumps offers a broad range of pump controls in a very compact pump package. The HPV Series has pressure capabilities to 420 bar, with displacements ranging from 55 cc to 280 cc. 

Duraforce HPV Closed Lood Pump

The DuraForce HPV closed loop piston pumps offers a broad range of pump controls in a very compact pump package. The HPV Series has pressure capabilities to 420 bar, with displacements ranging from 55 cc to 280 cc. 

Eaton 33 - 76 Series Hydrostatic Transmissions

Features

  • 6000 PSI Pressure Rating
  • Speeds to 4510 RPM
  • 10,000 Hour B10 Bearing Design Life 
  • 3 Year Warranty

Drive shafts – a wide variety of options are available to suit every need.

High strength swashplates on variable pumps and motors – resist deflection under high load.

High strength cast iron housings – provide greater noise damping and wall strength.

High flow check valves in pumps – keep the system primed with minimal pressure drop.

Charge pumps on pumps – gerotor type, several displacement options are avail- able to suit the needs of every application. All cast iron construction.

Cartridge shaft seal – lends itself to easy serviceability. Mechanical face seal design tolerates high speed and high case pres-
sures.

Advanced cylinder barrel design – permits high speed and pressure.

Fixed clearance slipper hold down – on Models 33 through 64 allows operation at high speed and reduces friction. Model 76 is a ball guide unit.

Pistons – have long engagement with cylinder bore resulting in low leakage.

Hydraulic servo control – provides low effort operation with low control pressure. Large servo pistons hold swashplate position and provide damping.

Large case drain ports – minimize case back pressure.

Eaton Series 2 Heavy Duty Pump

Features

  • 430 Bar Pressure Rating
  • Speeds to 4510 RPM
  • 3 Year Warranty
  • Electronic Controls
  • 1 Year Warranty on Electronics

The Eaton® Series 2 Heavy Duty Pump

The Advanced Series 2 Heavy Duty pump, with a cradle swashplate design, combines the time-tested reliability you expect from Eaton with compact packaging, exceptional control and quiet operation. New pump mounted electronic controls range from the simple Electronic Proportional (EP) Displace- ment Control to the sophisticated Multiplex Control with CAN communications for displacement and pressure control.

The Series 2 Pump’s single piece pump housing provides exceptional strength and soundproofing. Eaton’s cast iron housing has only one major opening versus two openings for competitive pumps. This provides a stronger, more rigid pump housing and reduces the number of gasketed joints.

The high-strength, one-piece swashplate has the swashlever and servo-pin integrated into the swashplate, delivering increased reliability without adding extra weight.

A large diameter single servo piston permits pump operation at lower charge pressures, minimizing parasitic charge pump losses for increased overall pump efficiency. A large centering spring, housed within the servo piston, returns the pump to neutral in the event of control pressure loss.

The new integral gerotor type charge pump combines excellent suction/speed capabilities in a compact design. Several displacement options are available to suit the needs of every application, including tandem pumps.

The pump mounted electronics and sensors have been specially designed to meet the rigors of the mobile - off road enviroment, including resistance to electromagnetic interference or emissions.

A variety of available drive shaft configurations – straight keyed, splined, or tapered–ensures the proper shaft for your application.

The serviceable bi-metal bearing plate has steel for high pressure capability and a bronze bearing face for high speed capabilities.

SAE auxiliary mounts: “A,” “B,” “B-B” and “C” are available with and without charge pump. Excellent torque capability allows high horsepower to work circuits without multiple pump drives.

The main system ports – SAE code 61 and code 62 – are available with SAE or Metric threads. Opposite side and same side configurations are now available to accommodate a wide range of installations.

TVW Closed Circuit Piston Pump Transmissions

Hydrokraft's TVW series Closed circuit piston pump Transmissions are found in heavy industrial applications where high power is a standard.  These pumps typically drive large Low Speed High Torque hydraulic motors on winches, tunnel boring machines, sugar mills,  power generation and other demanding applications. Designed for industry leading bearing life expectation operating at continuous pressures up to 350 bar [5000 psi] and displacements from 130cc [8.0in3] to 750cc [45.3in3]. 

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