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Woodward 8521-0070 Mechanical-Hydraulic Governor

Woodward 8521-0070 Mechanical-Hydraulic Governor

 
WOODWARD · GOVERNOR CONTROL
8521-0070
 
Industrial Governor
A Woodward governor reference intended for compatible prime-mover speed-control applications. Replacement should be matched with the installed governor configuration and application requirements.
TYPE
Governor
FAMILY
Woodward
ROLE
Speed Control
         
Application focus: compatible industrial and marine prime-mover speed regulation where the exact governor configuration must be preserved during replacement.
 
 
 
INDUSTRIAL AUTOMATION PARTS
Keep Critical Equipment Moving
Fast sourcing for automation, governor and control-system spare parts, helping maintenance teams reduce unnecessary downtime.
EMAIL
sales@amikon.cn
PHONE / WHATSAPP
86-18020776792
SALES MANAGER
Miya Zheng
 
 
 
 
 
MECHANICAL-HYDRAULIC GOVERNING
WOODWARD
8521-0070
 

Woodward 8521-0070 is presented within the proven UG governor family, a mechanical-hydraulic control platform designed for prime-mover speed regulation. The UG Lever family is used with diesel, gas and dual-fuel engines as well as steam turbines, with the governor mechanically linked to fuel racks or fuel valves.

UG FAMILY MECHANICAL-HYDRAULIC PRIME-MOVER CONTROL
CONTROL PROFILE
UG LEVER FAMILY
Mechanical-hydraulic governing for controlling prime-mover speed and output.
UG-8 WORK OUTPUT
13.2 N·m
OIL PRESSURE
827 kPa
OUTPUT TRAVEL
42° max.
CONTROL TYPE
Hydraulic
01 / WORK OUTPUT
13.2 N·m
UG-8 rated work capacity
 
02 / HYDRAULIC PRESSURE
827 kPa
120 psi nominal UG-8 pressure
 
03 / OUTPUT SHAFT
42°
Maximum terminal-shaft travel
 
SERIES POSITION
UG-5.7 / UG-8 / UG-10
 

The UG Lever family uses the same fundamental mechanical-hydraulic governing principle across several work-output versions. UG-5.7, UG-8 and UG-10 share similar operating, adjustment and troubleshooting concepts while differing in work capacity and hydraulic pressure.

UG-5.7
7.1 N·m
5.2 lb-ft work capacity
827 kPa / 120 psi
UG-8
13.2 N·m
9.7 lb-ft work capacity
827 kPa / 120 psi
UG-10
15.9 N·m
11.7 lb-ft work capacity
1034 kPa / 150 psi
TYPICAL APPLICATION LOGIC
Diesel engines · Gas engines · Dual-fuel engines · Steam turbines · Generator sets · Mechanical fuel-rack or valve control
ENGINEERING CHARACTER
Why the UG concept matters

The UG Lever governor regulates prime-mover speed through a mechanical-hydraulic mechanism. Its terminal shaft operates the external fuel or steam control linkage, allowing the governor to influence engine or turbine output as operating conditions change.

Isochronous Operation
The governor normally operates isochronously to maintain constant speed under changing load conditions.
Speed Droop
A droop function can be used where load sharing between units operating together is required.
Mechanical Linkage
The terminal shaft connects through the machine linkage to a fuel rack or valve mechanism.
Shutdown Capability
The governor arrangement can incorporate shutdown provisions depending on the installed configuration.
FIELD CHECK
When performance changes

A governor-related symptom does not always mean that the governor itself has failed. Mechanical linkage, oil condition, hydraulic pressure and prime-mover behavior should be considered together.

ENGINE HUNTING / SURGING
Check linkage alignment and freedom of movement, governor compensation, oil level and prime-mover stability before concluding that the governor requires replacement.
SLOW FUEL-RACK RESPONSE
Inspect the engine-to-governor linkage for binding and verify governor oil pressure. UG-8 normal operating pressure is approximately 110–120 psi.
LOAD-SHARING INSTABILITY
For paralleled generator units, the governor droop arrangement and available output-shaft travel have a direct effect on load distribution and system stability.
OIL PRESSURE DEVIATION
For UG-8, the specified internal hydraulic pressure is 827 kPa (120 psi). A significant deviation should be investigated before commissioning or continued operation.
AMIKON INDUSTRIAL PARTS
Reduce downtime.
Keep systems moving.
 

Amikon supports industrial automation and control-system spare-part sourcing for maintenance, replacement and plant-recovery requirements.

HIMA · ABB · Emerson · GE · Siemens · Woodward · TRICONEX · ICS Triplex · Yokogawa · Bently Nevada
Industrial Automation · DCS · PLC · Drives · Turbine Control · Monitoring Systems
 
 
 
 
 
 
 
 
 
 
 
PURCHASING QUESTIONS
8521-0070
Buyer FAQ
 

For an older governor installation, successful replacement depends on more than the family name. Part-number matching, governor configuration, linkage arrangement and application conditions should all be considered before ordering.

01
Can Woodward 8521-0070 be treated as a direct replacement for every UG-8 installation?
No. The UG-8 family contains different configurations and adjustment arrangements. The exact 8521-0070 part number should be matched with the installed governor configuration, mechanical interface and prime-mover application before replacement.
02
What should be checked before purchasing Woodward 8521-0070 for an existing machine?
Confirm the complete governor part number, the speed-setting arrangement, terminal-shaft connection and the linkage between the governor and the engine fuel rack or turbine valve. These details can determine whether a replacement is mechanically suitable.
03
Why is the UG-8 specification important when evaluating Woodward 8521-0070?
The UG-8 family is rated for 13.2 N·m (9.7 lb-ft) work output and approximately 827 kPa (120 psi) internal hydraulic pressure. These values provide useful engineering checkpoints when comparing an existing governor installation with the intended replacement.
04
Could a Woodward 8521-0070 operating problem actually be caused by the linkage?
Yes. Hunting, sluggish response or poor fuel-rack movement can involve linkage binding, incorrect adjustment, insufficient governor oil pressure, oil condition or unstable prime-mover conditions. The governor should not be condemned solely from the operating symptom.
05
When should a buyer choose Woodward 8521-0070 instead of another UG-series configuration?
The deciding factor should be the complete installed configuration rather than the UG family name alone. Work-output requirements, speed-setting method, shutdown arrangement and mechanical interface should correspond with the existing prime-mover control system.

 

 

DELIVERY
3–5 Days
E-packing / FedEx / EMS / TNT / DHL / UPS
WARRANTY
12 Months
New condition packaging
PAYMENT
T/T
Flexible order coordination
PACKAGING
New
Careful industrial-part packing

 

 

REQUEST A QUOTATION
Send the details.
We will check the match.

To speed up quotation handling, please provide the following five items with your inquiry.

01
Part Number
02
Quantity
03
Destination
04
Required Date
05
Machine/System

 

 

AFTER-SALES
Return / Replacement
Please contact us within 7 days after receiving the item if you have any question concerning the order.
For a return request, the item should remain in its original condition and the specific reason should be provided. After the returned item is received and checked, a return or replacement can be arranged for the order.
Shipping expenses associated with the return are the buyer's responsibility.

 

 

READY TO CHECK 8521-0070?
Talk with Miya.
For availability, configuration matching, quotation and industrial spare-part sourcing, contact our sales manager directly.
EMAIL
sales@amikon.cn
PHONE / WHATSAPP
86-18020776792
SALES MANAGER
Miya Zheng
Industrial Automation · Control Systems · PLC · DCS · Drives · Turbine & Power-Generation Components
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