Hydraulic Pitch
Pump
Advanced Solutions for Durable and
Robust Pitch Control
Moog is one of the leading suppliers of variable displacement piston pumps. Advantages
The wind turbine hydraulic pitch pump has been specifically designed to withstand
the harsh environments in wind turbine locations. Our field-proven, robust and • Durability, low maintenance
contamination-resistant concepts lead to longer product lifetime and higher reliability. requirements and long pump life help
to significantly reduce maintenance
Moog has significantly reduced both primary and secondary noise emission levels, costs and encourage more uptime
delivering overall noise optimization and much less vibration. The result is one of the
• Increased robustness, even under
quietest piston pumps in the marketplace with the same high performance and long
harsh operating conditions
life for which Moog is known.
• High efficiency leads to low energy
The wind turbine hydraulic pitch pump is characterized by a rapid response time consumption
and high volumetric efficiency for hydraulic power units (HPU) with demanding flow • Low sound level
and pressure control needs. It benefits from a high oil temperature range from
-40 to +80 °C (-40 to +176 °F) and a flushing function that starts at -40 °C (-40 °F) to • High modularity in design due to a
heat the pump up to -15 °C (+5 °F). Operation of the pump itself starts at -15 °C (+5 °F). large number of sizes, control types
and mounting flanges, as well as
Our broad product range includes various sizes and pressure levels, single and approved versions for a variety of
multiple configurations, several control options and mounting flanges to provide operating liquids
maximum flexibility. The Hydraulic Pitch Pump is suitable for various fluids such as • Low pressure pulsation
mineral oil, transmission oil and biodegradable oil. Further options and features can
be provided on demand. • Fast response time for higher
dynamic pitch control
Applications
Hydraulic power units for pitch control
solutions
• Onshore
• Offshore
YOUr partner in pitch control
Specifications
Technical Data
Displacement [cm3/rev] 19 32 45 63 80 100 140
Type of construction Pump for open circuit with various control devices
Type of mounting • End mounting, centering and hole-circle Ø to ISO 3019-2 (metric)
• Mounting flange to ISO 3019-1 (inch)
• Mounting flange to ISO 3019-2 (metric)
Mounting position Any
Weight [kg (lb)] 22 (49) 33 (73) 71 (157) 105 (232)
Mass moment of inertia [kg cm2 (10-4 lbf in s2)] 17.7 61 (540) 186.3 (1649) 380
(157) (3363)
Drain line [mm (in)] 15 (5/8) 18 (3/4) 22 (7/8)
Type of drive Direct drive with coupling (please inquire with your Moog contact for other
types)
Ambient temperature range [°C (°F)] -15 to +60 (5 to +140)
Maximum housing pressure 2 bar (29 psi) (1 bar (15 psi) gauge pressure)
Maximum speed
At inlet pressure 0.8 bar (12 psi) absolute [min-1]1) 2,700 2,500 2,000 2,400 2,000 1,800
At inlet pressure 1 bar (15 psi) absolute [min-1]1) 2,800 2,600 2,100 2,500 2,050 1,850 1,900
For quiet running [min-1] 1,800
Medium pressure series
Continuous pressure [bar (psi)] 280 (4000)
Maximum pressure [bar (psi)]2) 315 (4500)
Pressure peak [bar (psi)] 350 (5000)
High pressure series
Continuous pressure [bar (psi)] 350 (5000) - 350 (5000) -
Maximum pressure [bar (psi)] 2)
385 (5500) - 385 (5500) -
Pressure peak [bar (psi)] 420 (6000) - 420 (6000) -
Viscosity • Allowable operational range 12 to 100 mm2/s (cSt): Recommended 16
to 46 mm2/s (cSt)
• Hydraulic fluid according to ISO VG 46 or VG 32 viscosity class
• Maximum viscosity 500 mm2/s (cSt) during start-up with electric
motor at 1,800 min-1
Filtering3) • NAS 1638, class 9; ISO 4406, class 20/18/15; obtained with filter
fineness of β 20 = 75
• NAS 1638, class 7; ISO 4406, class 18/16/13; with electro-hydraulic
control
1)
Maximum speed increase on request
2)
Maximum pressure according to DIN 24312
3)
Dirt particles retention rate > 20 µm is 1:75, i.e. 98,67%
Note: For special fluids like HFA, HFC and emulsions the above pressure, viscosity and filtration parameters may be changed.
Moog has offices around the
world. For more information or
the office nearest you, contact
us online.
wind.germany@moog.com
www.moog.com/wind
Moog is a registered trademark of Moog Inc. and its
subsidiaries. All trademarks as indicated herein are
the property of Moog Inc. and its subsidiaries.
©2012 Moog Inc. All rights reserved. All changes are
reserved. This technical data is based on current available
information and is subject to change at any time.
Wind Energy Hydraulic Pitch Pump Specifications for specific systems or applications
Rev. -, August 2012, CDL35342-en may vary.
