The Hitachi ZW370 JDM-198 RC Wheel Loader is built for RC construction enthusiasts who want more than a visually convincing loader. At 1:14 scale and 16.5kg, this hydraulic machine combines a metal construction, two-speed planetary transmission, lockable axle, powerful hydraulic system, detailed lighting and sound, and substantial stated lifting and traction figures.
Built by JDM, the Hitachi ZW370 JDM-198 RC Wheel Loader arrives new, pre-assembled, and painted. Its overall dimensions of 710 × 250 × 268mm give it considerable presence, while its bucket can reach a stated maximum height of 461mm.
The specifications go considerably deeper than size alone. JDM lists a 15kg theoretical boom rise force, 30kg theoretical traction force, and maximum bucket force of 40kg / 88lb. The hydraulic pump is rated for 0.8L/min flow, 2.5MPa rated pressure, and 5MPa ultimate pressure, making the JDM-198 a technically detailed machine designed around functional RC loading.
A Substantial 1:14-Scale Hydraulic Loader
The JDM-198 is modeled at 1:14 scale, giving it the dimensions to work alongside similarly scaled RC dump trucks, excavators, and other construction equipment.
Its supplied measurements are:
· Length: 710mm
· Width: 250mm
· Height: 268mm
· Wheelbase: 252mm
· Net weight: 16.5kg / 36.3lb
The 710mm length is measured with the bucket flat, while the 250mm width is measured at the tire ends, according to the supplied description.
At 16.5kg, this is a substantial RC wheel loader. That physical mass contributes to its planted presence during operation and complements the metal construction and hydraulic working equipment.
Metal Construction
The JDM-198 is specified simply and clearly as:
Material: Metal
Combined with its 16.5kg net weight, this gives the loader the substantial construction expected from an advanced hydraulic RC machine.
It also arrives pre-assembled and painted, avoiding the need to construct the primary chassis, drivetrain, hydraulic system, and body from a kit before operation.
For collectors, the combination of metal construction and detailed Hitachi ZW370-inspired styling also gives the loader considerable display presence when it is not being operated.
Hydraulic Loading System
Hydraulics form the heart of the JDM-198's working equipment.
The supplied pump specifications are:
|
Hydraulic Specification |
Rating |
|
Pump Flow |
0.8L/min |
|
Rated Pressure |
2.5MPa |
|
Ultimate Pressure |
5MPa |
|
Reversing Valve |
Miniature 3-Way Plug Type |
|
Valve Configuration |
Neutral Oil Return |
The 0.8L/min hydraulic flow rate provides a useful technical reference for the pump itself, while the distinction between 2.5MPa rated pressure and 5MPa ultimate pressure should be maintained.
The machine uses a miniature three-way plug-type reversing valve with neutral oil return, giving the hydraulic system its specified control arrangement.
A Note on the Listed Operating Pressure
The specification table separately provides an operating oil pressure of 3.50 bar / 50.75psi.
This is distinct from the pump specifications of 2.5MPa rated pressure and 5MPa ultimate pressure. Because all three values are provided in the source, they are retained separately rather than being treated as interchangeable figures.
40kg / 88lb Maximum Bucket Force
One of the most striking specifications supplied for the JDM-198 is its stated:
Maximum bucket force: 40kg / 88lb
This figure should be understood specifically as the supplied maximum bucket force, rather than automatically treating it as a 40kg payload or lifting capacity.
The specifications separately provide:
· Theoretical rise: 15kg — boom lift
· Theoretical traction: 30kg
Keeping these measurements separate is important because they describe different aspects of the loader's stated performance.
The 15kg theoretical rise figure relates to the boom lift, while the 30kg theoretical traction figure relates to the machine's pulling capability as specified by the manufacturer.
Together with the 40kg maximum bucket-force figure, they illustrate the working emphasis of the JDM-198 without incorrectly turning any of those numbers into a bucket payload rating.
Maximum Bucket Height of 461mm
The loader's bucket can reach a stated maximum height of:
461mm
That is an important working dimension for a wheel loader because lifting height influences how the machine can interact with other RC construction equipment.
A hydraulic loader becomes particularly useful when it can collect material from ground level, raise it, approach a compatible dump truck, and tip the bucket over the truck's bed.
The supplied specifications do not state the bucket's volume or maximum material payload, so neither should be inferred from the 461mm lifting height.
Bucket Movement Angles
The supplied specifications also provide two sets of bucket-angle measurements:
· Maximum bucket up/down angle: 46–64°
· Maximum bucket left/right angle: 38°
These figures have been retained exactly as supplied.
The source does not provide further explanation of the measurement methodology or precisely how the left/right angle is referenced. For that reason, it is better to preserve the specifications rather than reinterpret their geometry.
Two-Speed Planetary Transmission
Power delivery is handled through a two-speed planetary transmission.
The two gear ratios are:
· First gear: 1:64
· Second gear: 1:16
This gives the JDM-198 two different drivetrain configurations rather than relying on a single fixed gear ratio.
A lower gearing arrangement can favor controlled movement and mechanical advantage, while the alternative ratio changes the drivetrain behavior for a different operating situation.
The specifications do not provide an actual travel speed for either gear, so no km/h or m/min figure should be assigned to them.
Lockable Axle
The axle has its own stated reduction ratio of:
1:10.4
and is described as:
Lockable
This adds another mechanical feature to the drivetrain and complements the loader's two-speed transmission.
For an RC construction machine designed to work on loose material and uneven miniature job sites, the combination of the planetary gearbox and lockable axle provides a more sophisticated drivetrain configuration than a simple single-speed setup.
The supplied information does not specify whether axle locking is remotely controlled or manually engaged, so that detail should not be assumed.
11.1–12V Power System
The supplied product description states a power-supply voltage of:
11.1V–12V
using a:
3S lithium battery
The approximate battery dimensions are:
130 × 40 × 25mm
These dimensions are particularly useful when determining the physical battery size suited to the model.
The source does not specify the battery's capacity in mAh, runtime, charging time, discharge rating, or connector type.
Those specifications should therefore remain unspecified.
FS-i6S Radio System
The package includes an:
FS-i6S RC controller and receiver
This provides the radio equipment required for controlling the loader.
Unlike some JDM models where only a generic transmitter is identified, the supplied package information names the controller specifically.
The product information does not state the transmitter frequency, maximum control range, or number of available radio channels. Those details have therefore not been added.
Detailed Lighting System
Scale realism is supported by a particularly detailed lighting arrangement.
The supplied description identifies:
· Low-beam lights
· High-beam lights
· Fog lights
· Dome lights
This goes beyond a generic statement that the loader simply has working LEDs.
Having several identified lighting functions helps reproduce the appearance of a full-size wheel loader during operation and gives the JDM-198 additional visual detail when used in darker environments.
Standard Sound System
A standard sound system is also included.
The supplied description states that it is designed to replicate engine sounds, adding another layer of realism alongside the lighting and hydraulic movement.
No detailed sound-function list is provided, so additional effects such as horn, reversing warning, startup sequence, or individual engine modes should not be assumed.
Watch the JDM-198 in Action
A video of the model has also been provided:
Seeing a large hydraulic loader operate is particularly useful for understanding its overall scale presence, steering behavior, bucket movement, and hydraulic action in a way that static specifications alone cannot demonstrate.
Hitachi ZW370 JDM-198 Specifications
|
Specification |
JDM-198 |
|
Product |
Hitachi ZW370 RC Wheel Loader |
|
Model |
JDM-198 |
|
Brand |
JDM |
|
Condition |
New |
|
Assembly |
Pre-Assembled & Painted |
|
Scale |
1:14 |
|
Material |
Metal |
|
Length |
710mm |
|
Width |
250mm |
|
Height |
268mm |
|
Wheelbase |
252mm |
|
Net Weight |
16.5kg / 36.3lb |
|
Maximum Bucket Height |
461mm |
|
Maximum Bucket Force |
40kg / 88lb |
|
Theoretical Boom Rise |
15kg |
|
Theoretical Traction |
30kg |
|
Bucket Up/Down Angle |
46–64° |
|
Bucket Left/Right Angle |
38° |
|
Hydraulic Pump Flow |
0.8L/min |
|
Pump Rated Pressure |
2.5MPa |
|
Pump Ultimate Pressure |
5MPa |
|
Listed Operating Oil Pressure |
3.50 bar / 50.75psi |
|
Hydraulic Valve |
Miniature 3-Way Plug Type |
|
Valve Return |
Neutral Oil Return |
|
Transmission |
2-Speed Planetary |
|
1st Gear Ratio |
1:64 |
|
2nd Gear Ratio |
1:16 |
|
Axle Ratio |
1:10.4 |
|
Axle |
Lockable |
|
Power Supply |
11.1–12V |
|
Battery Type |
3S Lithium |
|
Battery Size |
Approx. 130 × 40 × 25mm |
|
Controller |
FS-i6S |
|
Sound System |
Included |
|
Lighting System |
Included |
What's Included?
The JDM-198 package includes the major mechanical, electronic, hydraulic, and radio-control components required for the model:
- 1 × 1:14 RC Hydraulic Wheel Loader
- ESC
- Motor
- Servo
- Hydraulic System
- 2-Speed Transmission
- Sound System
- Light System
- FS-i6S RC Controller and Receiver
- Sticker
- USB Charging Cable
The package list does not explicitly list a battery, even though the product description provides the required power-system and 3S battery dimensions. Battery inclusion should therefore not be assumed from the supplied information.
Important Operating Precaution
The product information includes a specific warning concerning the bucket and boom.
When the boom is at its lowest position and the bucket is down, the boom should not be lifted for operation because doing so may damage the bucket cylinder.
This is worth observing carefully because the warning comes directly from the supplied operating information rather than being a general RC recommendation.
The source also cautions against impacts during transportation because of the loader's considerable weight. Impacts may damage the axle and bucket cylinder.
At 16.5kg, careful handling during transport is therefore an important part of protecting the machine.
Built for Loading and Material Handling
Where a hydraulic excavator specializes in digging below its operating level, the JDM-198 is built around loading, lifting, pushing, and relocating material.
Its 461mm maximum bucket height makes it particularly suited to working alongside compatible RC dump trucks.
A realistic construction cycle could involve an excavator digging material and creating a stockpile. The JDM-198 can then approach the pile, load its bucket, reverse, maneuver toward a waiting dump truck, raise the boom, and unload.
That creates a complete miniature workflow:
Excavate → Stockpile → Load → Haul → Dump
The loader's hydraulic equipment, two-speed transmission, lockable axle, metal construction, and 16.5kg weight make it particularly well suited to this type of coordinated RC construction environment.
What Makes the JDM-198 Stand Out?
The JDM-198 combines several serious mechanical specifications in one machine.
Its 1:14 scale and 16.5kg metal construction establish its physical presence. The working system adds a 0.8L/min hydraulic pump, with 2.5MPa rated and 5MPa ultimate pump-pressure figures.
Its stated performance specifications include a 15kg theoretical boom rise, 30kg theoretical traction, and 40kg / 88lb maximum bucket force.
The drivetrain is equally noteworthy, combining a two-speed planetary gearbox with 1:64 and 1:16 ratios and a lockable 1:10.4 axle.
Add the 461mm maximum bucket height, FS-i6S radio system, detailed lighting, and engine-sound system, and the result is a wheel loader built around both functional operation and scale presentation.
Why Buy From Heavy Duty RC?
The Hitachi ZW370 JDM-198 RC Wheel Loader at Heavy Duty RC brings together a substantial metal chassis, hydraulic loading system, sophisticated drivetrain, detailed lighting, sound, and an included FS-i6S radio system.
For enthusiasts building a larger hydraulic construction fleet, its 16.5kg weight, 40kg stated maximum bucket force, 461mm bucket height, two-speed planetary transmission, and lockable axle give it a distinctly work-focused specification.
Frequently Asked Questions
What scale is the Hitachi ZW370 JDM-198?
The loader is built at 1:14 scale.
How much does the JDM-198 weigh?
Its stated net weight is 16.5kg / 36.3lb.
Is the JDM-198 metal?
Yes. The supplied material specification identifies the loader as metal.
How high can the bucket lift?
The stated maximum bucket height is 461mm.
What is its maximum bucket force?
The supplied specification is 40kg / 88lb maximum bucket force. This should not be interpreted as a 40kg payload rating.
What is the boom lifting figure?
JDM provides a 15kg theoretical rise figure for the boom lift.
What is the stated traction figure?
The supplied theoretical traction specification is 30kg.
What pressure does the hydraulic pump produce?
The hydraulic pump is specified at 2.5MPa rated pressure and 5MPa ultimate pressure, with a flow rate of 0.8L/min.
Does it have a two-speed transmission?
Yes. It uses a two-speed planetary gearbox with ratios of 1:64 in first gear and 1:16 in second gear.
Does the axle lock?
The supplied specifications identify the 1:10.4 axle as lockable.
What battery does the JDM-198 use?
The supplied power specification is 11.1–12V, using a 3S lithium battery approximately 130 × 40 × 25mm. Capacity is not specified.
Conclusion
The Hitachi ZW370 JDM-198 RC Wheel Loader is a substantial hydraulic construction model built around much more than scale appearance.
At 1:14 scale, 710mm long, and 16.5kg, its metal construction provides the foundation for a serious working machine. The hydraulic system delivers 0.8L/min pump flow, with stated pump pressures of 2.5MPa rated and 5MPa ultimate, while the bucket can reach a maximum height of 461mm.
Its drivetrain is another highlight. A two-speed planetary transmission provides 1:64 and 1:16 gear ratios, while the axle uses a 1:10.4 ratio and is lockable.
JDM further specifies a 15kg theoretical boom rise, 30kg theoretical traction, and 40kg / 88lb maximum bucket force, giving prospective operators useful figures for understanding the model's stated working capabilities.
With its FS-i6S radio equipment, hydraulic functionality, engine sound, detailed lighting, and pre-assembled metal construction, the JDM-198 offers the equipment and presence to take on the primary material-loading role within a serious RC construction fleet.