The Power HD WB-120KG (part number HD-WB-120KG) is a high-voltage, large-scale brushless servo engineered for extreme torque and fast response.
With an aluminium case for rigidity and heat dissipation, steel gears for durability, and a 15T output spline, it is designed to deliver dependable performance in demanding RC applications.
This HV servo is powered via a 4S balance lead and operates from 12.6–16.8V DC, producing up to 120.0 kg-cm of torque and speeds down to 0.10s. A 333 Hz working frequency and precise 1520 μs pulse width support smooth, accurate control. Despite its high output, the servo maintains a compact large-scale footprint and robust build quality.
Key Specifications
Motor type: Brushless
Gear type: Steel
Case: Aluminium
Horn gear spline: 15T
Operating voltage: 12.6–16.8V DC
Max current: 8A
Working frequency: 1520 μs / 333 Hz
Operating temperature: -10? to 60?
Power connection: Fitted with two plugs; use the 4S balance lead for 12.6–16.8V input
Size: 59.5 x 29.5 x 54.4 mm
Weight: 212 g
Performance Ratings
Torque (6.0V): 36.0 kg-cm (499.9 oz-in)
Torque (7.4V): 42.0 kg-cm (583.3 oz-in)
Torque (8.4V): 50.0 kg-cm (694.4 oz-in)
Torque (12.6V): 80.0 kg-cm (1111.0 oz-in)
Torque (14.8V): 98.0 kg-cm (1360.9 oz-in)
Torque (16.8V): 120.0 kg-cm (1666.5 oz-in)
Speed: 0.14s (12.6V) | 0.12s (14.8V) | 0.10s (16.8V)
Suggested Compatibility
Suggested compatibility: large-scale RC models requiring very high torque and robust control, such as heavy-duty steering or throttle/brake applications.
Manufacturer: Power HD
Part Number: HD-WB-120KG
EAN: 6929180012006
Servo Horn Fitment: 15t
Gear Material: Metal Geared
Servo Size: Large Scale
Operation: Digital
Torque (6v): 35 - 39.9kg
Speed (6v): .10 - .14s
Bearing Type: Double
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
