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Power HD Red/Black B7-RS Revolution Low-Profile 13kg 7.4V HV Brushless Metal Geared Servo

Brand: Power HD | SKU: B7-RS

3+ in stock

5.0

1 reviews

$147.40

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Description

Servos are powered by the ESC's output to the receiver. If you're using a higher-strength servo than the ESC can support (usually greater than 20kg), you may experience 'brown-outs' where the radio signal can be interrupted and cause erratic driving. This can be helped by plugging a Glitch Buster into the receiver smoothing the current delivery. However, in some cases, you may need to install an external BEC.

Weighing only 48g, the low-profile B7-RS has improved precision and speed over similar servos. The titanium & steel gears give great torque, while keeping weight to a minimum.

How To: Install a Servo

In this video, Hamish gives a step-by-step guide on installing a Servo and how to avoid stripping your servo gears.

Features

0.055 sec/60° @ 7.4V
Aluminium case
Low-profile & light-weight

Titanium & steel gears
2 x metal ball bearings
Compatible with SANWA SSR Mode

Servo Dimensions

Total Height (A) = 31.2mm
Body Width (B) = 41.2mm
Below Mount (C) = 16.8mm
Above Mount (D) = 9.59mm
Total Length (E) = 54.8mm
Total Width (F) = 20mm

Specifications

Torque(6.0V): 10kg-cm (138.8 oz/in)
Torque(7.4V): 13kg-cm (180.5 oz/in)
Speed: 0.65 sec (6V) ? 0.55 sec (7V)
Operating Voltage: 6-8.4V
Weight: 48g (1.69oz)

Bearing Type: 2 x Ball
Gear Type: Titanium & Steel
Operating Temperature: -20?~60?
Working frequency: 1520?s / 333hz
Size: 41.0 x 20.0 x 26.4 mm (1.61 x 0.79 x 1.04 in)

Included items

Description	QTY
B7-RS Low-Profile 13kg 7.4V HV Servo	1
Hardware	Set

Specifications

Servo

Servo Spline Count: 25Tooth
Total Length: 54.8mm
Total Width: 20mm
Bottom to Under Mount: 16.8mm
Top to Under Mount: 9.59mm
Total Height: 31.2mm
Body Length: 41.2mm
Rotational Degrees: 120° (Normal)
6V Sec/60 Degrees Seconds per 60 degrees of rotation: 0.065
Signal Type: Digital
Case Material: Aluminium
6V Torque kg/cm Kilograms of torque at 25mm away from the center of the spline: 13
Gear Material: Titanium & Steel
Waterproof Casing: Splash Proof
Drive Motor Type: Brushless
Size Conventionally sized servo names: Low Profile

Reviews (1)

Nov 02, 2025

Steven V

Verified Buyer

Excellent, fast and strong servo