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F12 Motor is a fixed displacement hydraulic piston motor. Bent-axis layout. Built for jobs where a normal low-speed motor or a simpler gear unit starts to feel limited. It turns hydraulic energy into rotary output, and it is made for real duty, not only easy bench conditions. This motor family is used in both open and closed loop circuits, which already tells you it is meant for more than one kind of machine layout.
What makes this series different is not only pressure. It is the whole design logic. The bent-axis structure uses a 40° angle between shaft and cylinder barrel, which helps keep the motor compact and light for the amount of power it can carry. The spherical piston design, timing gear setup, laminated piston ring, and heavy-duty bearings are all there for a reason. High speed. High torque at start-up. Better survival when the job is rough.
In real use, this is the kind of motor people pick when they want strong speed capability, solid efficiency, and a package that does not get oversized too fast. Construction, forestry, marine, mining, agriculture, municipal vehicles. That sort of work. It is also one of those products where the model code matters. Size, shaft, flange, valve option, mounting format. Those details matter more than buyers sometimes expect.
Key Features & Benefits
Bent-axis construction keeps the motor compact while still giving it strong power density.
Fixed displacement layout keeps the output behavior direct and predictable.
Continuous pressure goes up to 450 bar on several frame sizes.
Speed goes as high as 7300 rpm on the smaller frame sizes, which is part of why this series is used in faster-duty systems.
Laminated piston rings help reduce internal leakage and improve thermal shock resistance.
The motor delivers very high torque at start-up and at low speed.
Timing gear synchronization makes the series more tolerant to high G-forces and torsional vibration.
Heavy-duty roller bearings allow substantial external axial and radial shaft loads.
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Technical Specifications
The table below sums up the standard F12 motor size range and the main series values used most often when buyers compare models. Flow, torque, and power are theoretical values. Mounting and port details still depend on frame size and version.
|
Model |
Displacement (cc/rev) |
Max Continuous Pressure (bar) |
Max Continuous Speed (rpm) |
Max Flow (L/min) |
Torque (Nm) |
Max Output Power (kW) |
Min Speed (rpm) |
Approx. Weight (kg) |
|
F12-30 |
30.0 |
450 |
7300 |
219 |
214 |
164 |
50 |
11.5 |
|
F12-40 |
40.0 |
450 |
6300 |
252 |
286 |
189 |
50 |
15.7 |
|
F12-60 |
59.8 |
450 |
5800 |
347 |
429 |
260 |
50 |
18.6 |
|
F12-80 |
80.4 |
450 |
5100 |
410 |
571 |
308 |
50 |
25.7 |
|
F12-90 |
93.0 |
350 |
4600 |
428 |
517 |
250 |
50 |
25.7 |
|
F12-110 |
110.1 |
420 |
4400 |
484 |
733 |
339 |
50 |
33.0 |
|
F12-125 |
125.0 |
420 |
4200 |
525 |
833 |
368 |
50 |
33.0 |
|
F12-152 |
149.8 |
420 |
3700 |
554 |
1000 |
388 |
50 |
40.0 |
|
F12-162 |
163.1 |
420 |
3700 |
603 |
1080 |
422 |
50 |
40.0 |
|
F12-182 |
179.8 |
420 |
3700 |
665 |
1213 |
466 |
50 |
40.0 |
|
F12-250 |
242.0 |
350 |
2700 |
653 |
1344 |
381 |
50 |
77.0 |
F12 mounting and connection formats are not one single layout across all sizes. The family includes ISO and SAE flange / shaft configurations, plus a cartridge version. Smaller frames are also offered in versions like fan motors and saw motors with built-in valve options, while exact port threads and shaft styles depend on frame and build code.
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How It Works
1) Pressure oil comes in and acts on the piston group.
F12 Motor is a hydraulic motor, so the energy direction is the reverse of a pump. Pressurized oil enters the motor and pushes on the axial piston rotary group. That hydraulic force is what turns the shaft and creates rotary output. Oil in. Torque out. Simple enough when you strip the language down.
2) The bent-axis structure is what creates the rotary motion.
The shaft and cylinder barrel sit at a 40° angle to each other. As the barrel rotates, the pistons move in and out, and that repeating stroke is what keeps the motor running. This geometry is one reason the unit stays compact while still carrying high speed and strong starting torque.
3) Output depends mainly on flow and pressure.
Because F12 is a fixed displacement motor, the behavior is pretty direct. More flow means more speed. More pressure drop means more torque. That is also why this kind of motor is usually picked for higher-speed, higher-pressure drive duty instead of being treated like a basic low-speed motor. That last point is an engineering inference from the series speed, pressure, torque, and power ratings.
Model Range
|
Displacement |
Models |
Typical Application |
|
30 cm³/rev |
F12-30 |
Mobile machinery, auxiliary drive systems |
|
40 cm³/rev |
F12-40 |
Industrial hydraulic drives and compact power units |
|
60 cm³/rev |
F12-60 |
Medium-duty hydrostatic drive systems |
|
80 cm³/rev |
F12-80 |
Heavy-duty mobile machinery and winch drives |
|
90 cm³/rev |
F12-90 |
High torque hydraulic applications |
|
110 cm³/rev |
F12-110 |
Large hydrostatic transmission systems |
|
125 cm³/rev |
F12-125 |
Heavy-duty industrial and mobile applications |
|
150 cm³/rev |
F12-150 |
High-power hydraulic drive systems |
|
250 cm³/rev |
F12-250 |
Large-scale mobile and industrial hydraulic systems |
Applications & Industries
Construction
This is one of the direct listed fit areas for the F12 family. Good match for heavy-duty mobile systems where speed and torque both matter.
Forestry
Also a stated application area. The combination of compact size, high speed, and rugged bearing setup makes sense there.
Marine & Offshore
The series is also used in marine and offshore work, where hydraulic drive reliability matters more than fancy wording.
Agriculture
A normal fit for machines that need hydraulic rotary drive with better pressure and speed capability than simpler motor types. That second point is an inference from the series ratings.
Mining
Mining is listed too. Not surprising, really. The pressure class and power-to-weight ratio already point in that direction.
Municipal Vehicles
Municipal equipment is another named use area, especially where compact hydraulic drive sections are needed on working vehicles.
About Us
Sheungchak is an OEM and ODM hydraulic manufacturer focused on pumps, motors, valves, and related spare parts. We produce our own products and support customers from model confirmation through shipment.
Most buyers are really checking a few basic things.
Model right or not. Quality stable or not. Lead time clear or not.
That is how we handle F12 Motor orders too.
OEM production
ODM development support
Nameplate customization
Packing adjustment
Drawing or sample confirmation
Export shipment support
Years in business: 20+ years
Main products: hydraulic pumps / motors / valves / spare parts
Main markets: Europe / South America / Middle East / Southeast Asia / Africa
Main strengths: OEM / ODM / technical support / stable lead time / export service
Certifications
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Our Factory & Quipment
cooperative partner
We are looking for a cooperative partner to expand our business.
FAQ Display Content
1) Is F12 a fixed motor or a variable motor?
It is a fixed displacement hydraulic motor. That means the displacement does not change during operation.
2) Can F12 Motor work in both open and closed circuits?
Yes. This motor family is used in both open and closed loop circuits.
3) What sizes are available?
The normal F12 size range is 30, 40, 60, 80, 90, 110, 125, 152, 162, 182, and 250 cc/rev.
4) What pressure and speed can it handle?
That depends on frame size. In this family, max continuous pressure goes up to 450 bar, and max continuous speed reaches 7300 rpm on the F12-30 size. Larger sizes trade some speed for more torque.
5) How is this different from an orbital motor?
F12 is a bent-axis piston motor aimed at higher speed, higher pressure, and stronger power density. Orbital motors are usually chosen for a different operating window.
6) How is this different from a gear motor or vane motor?
If the job needs more pressure, more speed, or stronger power-to-weight, this kind of piston motor is usually the more suitable direction. Gear and vane motors can still be the practical choice for simpler circuits.
7) Can it handle shaft side load?
Yes. The series uses heavy-duty roller bearings and is described as allowing substantial external axial and radial shaft loads.
8) What do you need before quoting the right unit?
Best case, send the full old model code. If not, send the size, shaft type, flange style, port layout, application, and any photos of the old unit. On F12 Motor, those details matter early because the family includes ISO, SAE, cartridge, and special-use versions..
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