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  • HUB Series – Hydraulic Rotary Actuators
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    The Hydraulic Unibody (HUB) series actuator is designed to perform in the harshest environmental conditions. Built with a hard-coat anodized housing and hardened, high-strength alloy steel pinion and racks, this product is ideal for applications where adverse weather can be a factor. The HUB series is designed with several add-on valve modules for lower overall integration costs, as well as an increase in product performance. Multiple feedback and visual indication options are also available.
    • Output torques @ 3000 psi (207 Bar): 1800 lb-in to 10,000 lb-in.
    • Maximum operating pressure: 3000 psi (207 Bar)
    • Operating temperature range: Nitrile seals -40° to 180°F or -40° to 82°C
    • Standard rotations: 90°
    • Rotational tolerance: -0°, +2°
    • Maximum breakaway pressure: 70 psig or 4.8 Bar
    • Mounting orientation: unrestricted
    • Standard timing: keyway in 12:00 position at mid-stroke
    • Recommended filtration: ISO class 17/14 or better
    Rack and pinion design provides excellent efficiency characteristics (90-95%) and minimizes Hydraulic Power Unit Size Minimal heat build-up, limits the need for heat exchangers Large hollow gears offer more shaft options HUB series are designed for low wear on dynamic seals and longer life Excellent in high speed production applications:
    • Cross over vent module - allows for flow between both cylinder ports
    • Counter-balance valve module with cross over vent - designed for load holding in both directions and preventing a run-away load situation from occurring. Also allows for flow between both cylinder ports.
    • D03 Solenoid ready module - manifold block directly mounted to actuator for reduced plumbing and increase in performance
    Numerous linear and positional feedback and visual indication options available Environmentally rugged for reliable performance in harsh conditions
    Markets/Applications:
    • Automation/Mounting, Processing, Flood Gate Actuation, End of Arm Tooling
    • Mining/Mobile Longhole Drilling, Tunnel Boring
    • Mobile/Fire Truck Ladder Rotation, Aerial Lift Basket, X-ray Boom Rotation, Forklift Handling & Storage, Refuse Tippers
    • Oil & Gas/Process Valve Actuation
    • Oil Industry Machinery/Clamping, Lockout
    • Water Management
  • M series (Heavy Duty) – Hydraulic Rotary Actuators
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    The Heavy Duty M series actuators are designed to meet steel mill specifications, these non-tie rod units incorporate a range of features that provide heavy duty dependable service. The heat treated pinions provide low tooth contact pressures and permit hollow shaft configurations with bore sizes capable of transmitting full operating torques, including shock loadings. The M Series units are fitted with wear ring bushings that provide full support and eliminate the possibility of contact between the cylinder and piston. The large diameter tapered roller bearings on the pinion allow the actuator to absorb considerable thrust, radial and overhung loads. For ease of maintenance, all pressure seals on the M Series can be inspected or replaced without removing the actuator from the customer's shaft.
    • Output torques @ 3000 psi (207 bar): 75,000 lb.-in to 50,000,000 lb-in.
    • Maximum operating pressure: 3000 psi (207 bar)
    • Operating temperature range: Nitrile seals: -40° to 180°F or -40° to 82°C. Fluorocarbon seals: -20° to 250°F or -29° to 121°C
    • Standard rotations: 90°, 180°, 360°
    • Rotational tolerances: -0°, +2°
    • Maximum breakaway pressure: 75 psi or 5 bar
    • Mounting orientation: unrestricted
    • Timing: Keyway located at 12:00 position at midstroke of actuator
    • Housing: Heavy duty ductile iron (units up to 1000M) Steel weldments (units larger than 1000M)
      Rack and pinion design provides excellent efficiency characteristics (90-95%) and minimizes Hydraulic Power Unit Size. Minimal heat build-up, limits the need for heat exchangers. Large hollow gears offer more shaft options. M series are designed for low wear on dynamic seals and longer life. Excellent in high speed production applications.
    Markets/Applications:
    • Aluminium/automation
    • Fluid management & flow control/power plants
    • Marine offshore/boomslewer, submersible
    • Mining/mobile longhole drilling, tunnel boring
    • Mobile/fire truck ladder rotation, aerial lift basket, X-ray boom rotation, forklift handling & storage, refuse tippers
    • Nuclear/door actuation
    • Paper & pulp/walking beam
    • Rubber/mixing
    • Space/rocket launch tower
    • Steel & casting/ladle tilt, coil box, steel booming, pipe fabrication
  • Parker Hydraulics LogoParker PVP – Variable Volume Piston Pumps
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    All control is achieved by the proper positioning of the swash plate. This is achieved by a servo piston acting on one end of the swash plate working against the combined effect of the off-setting forces of the pistons and centering spring on the other end. The control spool acts as a metering valve which varies the pressure behind the servo piston. The amount of flow produced by the Parker Piston Pump is dependent upon the length of stroke of the pumping pistons. This length of stroke, in turn, is determined by the position of the swash plate. Maximum flow is achieved at an angle of 15-17 degrees. The rotating barrel, driven by the prime mover, moves the pistons in a circular path and the piston slippers are supported hydro statically against the face of the swash plate. When the swash plate is in a vertical position, perpendicular to the center line of the piston barrel, there is no piston stroke and consequently no fluid displacement. When the swash plate is positioned at an angle, the pistons are forced in and out of the barrel and fluid displacement takes place. The greater the angle of the swash plate, the greater the piston stroke.
    Features
    • High Strength Cast-Iron Housing for Reliability and Quiet Operation
    • Optional Inlet/Outlet Locations for Ease of Installation
    • Replaceable Bronze Port Plate
    • Replaceable Piston Slipper Plate
    • Thru-Shaft Capability SAE A Pilots Offered
    • Low Noise Levels - Promote More Comfortable Operating Environment
    • Fast Response Times
    • Metric Pilot Shaft and Ports Available
    Controls
    • Pressure Compensation
    • Remote Pressure Compensation
    • Load Sensing
    • Torque (Power) Limiting
    • Adjustable Maximum Volume Stop
    • Low Pressure Standby
  • Parker Hydraulics LogoParker PAVC – Variable Displacement Piston Pump
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    All control is achieved by the proper positioning of the swash plate. This is achieved by a servo piston acting on one end of the swash plate working against the combined effect of the off-setting forces of the pistons and centering spring on the other end. The control spool acts as a metering valve which varies the pressure behind the servo piston. The amount of flow produced by the Parker Piston Pump is dependent upon the length of stroke of the pumping pistons. This length of stroke, in turn, is determined by the position of the swash plate. Maximum flow is achieved at an angle of 17°. The rotating piston barrel, driven by the prime mover, moves the pistons in a circular path and the piston slippers are supported hydrostatically against the face of the swash plate. When the swash plate is in a vertical position, perpendicular to the centerline of the piston barrel, there is no piston stroke and consequently no fluid displacement. When the swash plate is positioned at an angle, the pistons are forced in and out of the barrel and fluid displacement takes place. The greater the angle of the swash plate, the greater the piston stroke. The centerline of the pumping piston assembly is offset from the centerline of the swash plate. Therefore, as shown on the accompanying Figure 1A, the pistons’ effective summation force tends to destroke the swash plate to a vertical (neutral) position. This destroking force is balanced as the swash plate is angled by the force of the servo piston.
    Features
    • High Strength Cast-Iron Housing
    • Built-In Supercharger
    • High Speed Capability - 3000 RPM
    • Two Piece Housing for Ease of Service
    • Cartridge Type Controls - Field Changeable
    • Replaceable Bronze Clad Port Plate
    • Airbleed Standard for Quick Priming
    • Hydrodynamic Cylinder Barrel Bearing
    • Full Pressure Rating on Water Glycol Fluids
    • Filtered and/or Cooled Drain Line Capable - 7 bar (100 PSI) Maximum
    Controls
    • Pressure Compensation
    • Remote Pressure Compensation
    • Load Sensing
    • Power (Torque) Limiting
    • Power Limiting and Load Sensing
    • Adjustable Maximum Volume Stop
    • Electrohydraulic Pressure
    • Electrohydraulic Flow and Pressure (Servo Control)
    • Low Pressure Standby
  • HTR Series - Hydraulic Rotorary Actuator
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    The HTR Series rotary actuator incorporates many hydraulic and mechanical features that make this actuator robust and ideal for the most demanding high production applications. Features include: high load capability tapered roller bearings; a chrome alloy steel rack and pinion gear set; a high strength ductile iron or steel housing; and proven Parker Hannifin cylinder components. The HTR Series actuators have been successfully employed in multiple applications including automotive plant production machinery; machine tool equipment; plastics and rubber processing machinery; basic metals production machinery and in material handling machinery. The HTR Series can be employed as an integral machine component, where the actuator can simultaneously transmit torque and support the line shaft or the load. Such an arrangement allows for the elimination of one set of external support bearings. Optional cushions can also be incorporated to decelerate external loads, thus eliminating the need for an external deceleration device such as shock absorbers or brakes. Additionally, machine installations can be simplified with the hollow shaft feature by eliminating additional coupling. This is achieved by means of a square shaft key or if needed the housing can be drilled and tapped to mount various brackets. For easy serviceability, the piston seals can be inspected and replaced while the actuator remains installed on the machinery. Rack and pinion design provides excellent efficiency characteristics (90-95%) and minimizes Hydraulic Power Unit Size Minimal heat build-up, limits the need for heat exchangers Large hollow gears offer more shaft options HTR series are designed for low wear on dynamic seals and longer life Excellent in high speed production applications
    • Output torques @ 3000 psi (207 bar): 900 lb.-in to 600,000 lb-in. (larger output torques available upon request)
    • Maximum operating pressure: 3000 psi (207 bar) non-shock (Except HTR22/45: 2000 psi (138 bar) non-shock)
    • Operating temperature range: Nitrile seals: -40° to 180°F or -40° to 82°C. Fluorocarbon seals: -20° to 250°F or -29° to 121°C
    • Standard rotations: 90°, 180°, 360°, 450°
    • Rotational tolerance: -0°, +2°
    • Maximum breakaway pressure: 70 psig or 4.8 bar
    • Mounting orientation: unrestricted
    • Standard timing: Keyway in 12:00 position at mid stroke
    • Recommended filtration: ISO class 17/14 or better
    • Hydraulic cushions to minimize noise, vibration shock and assist deceleration control
    • Reed, Hall Effect or proximity switches for position sensing
    • End-of-rotation stroke adjusters for load position control and accurate rotation adjustment
    • Built-in meter out flow control valves with reverse flow check valves provide a neat package
    • Three position option can be used with many special machine and material handling applications
  • LTR Series – Hydraulic Rotary Actuators
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    The LTR series rotary actuator is ideal for low pressure hydraulic applications. The LTR Series actuator combines an alloy steel gear set with a high strength aluminium housing and Parker 3L or 2A Series cylinder components into an actuator suitable for years of trouble free service. The actuator maximizes volumetric efficiency by using self-energizing PolyPak seals. Mechanical efficiency is maximized by using antifriction bearings and Wear-pak® piston technology.
    • Output torques @ 1000 psi (69 bar): 395 lb.-in to 22,813 lb-in.
    • Nominal pressure: 1000 psig (69 bar) (3L cylinder pressure ratings apply)
    • Operating temperature range: Nitrile seals: -40 to 180° F or -40 to 82°C. Fluorocarbon seals: -20 to 250°F or -29 to 121°C
    • Standard rotations: 90°, 180°, 270°, 360°, 450°
    • Rotational tolerance: -0°, +2°
    • Maximum breakaway pressure: 30 psig or 2 bar
    • Mounting orientation: unrestricted
    • Standard timing: Keyway in 12:00 position at mid-stroke
    • Recommended filtration: ISO class 17/14 or better
    • Hydraulic cushions to minimize noise, vibration shock and assist deceleration control
    • Reed, Hall Effect or proximity switches for position sensing
    • End-of-rotation stroke adjusters for load position control and accurate rotation adjustment
    • Built-in meter out flow control valves with reverse flow check valves provide a neat package
    • Three position option can be used with many special machine and material handling applications
      Rack and pinion design provides excellent efficiency characteristics (90-95%) and minimizes Hydraulic Power Unit Size Minimal heat build-up, limits the need for heat exchangers Large hollow gears offer more shaft options LTR series are designed for low wear on dynamic seals and longer life Excellent in high speed production applications