HB7545GS 45KG Brushless Waterproof Digital Servo

Description

The HB7545GS 45KG Brushless Waterproof Digital Servo delivers 45kg·cm with a High Speed transit time, running on 6.0V~8.4V.

It is built with a Metal Gear train, Aluminum Alloy case, dual ball bearings (2BB), waterproof construction, 78g weight, 40x20x40.5mm body, JR JST 300mm connector as standard.

A brushless motor removes the brushes entirely, which means less internal wear and more consistent torque over a long service life.

This is a high-voltage servo: it reaches full rated torque on 2S LiPo or a 7.4–8.4V BEC, and it will still run on 6.0V with reduced torque. Check the BEC rating of your ESC before you connect it.

Operating angle is available in 180°/270°/360° Optional, so the same body can be ordered for standard control-surface work or for winch and robot-joint applications that need more than 180°.

This is large-scale territory: 1:5 vehicles, industrial robot joints and UAV applications that need strong holding torque and a fast transit time.

Ordering for a build or a distribution line? Tell us the torque, voltage range and connector you need and we will quote it. See also the full Yadovex range and our guides on choosing 6S long-range motors and 7-inch vs 9-inch propulsion.

Key specifications

The HB7545GS brushless digital servo delivers 45kg·cm of torque with a waterproof high-speed magnetic design, engineered for RC cars, trucks, crawlers, boats and UAV applications. Its coreless brushless motor with MOS drive and digital control offers fast response, smooth operation and strong holding power.

Built with a full metal gear train, aluminum alloy case and dual ball bearings (2BB), it features a 1usec dead band for sharp, accurate response. Control angle options of 180°, 270° and 360° are available to match your project needs.

Specifications

• Model: HB7545GS
• Ball Bearing: 2BB
• Driver Type: MOS Drive
• Motor Type: Brushless motor
• Potentiometer Type: Direct Drive
• Amplifier Type: Digital Control
• Dead Band Width: 1 usec
• Gear Material: Metal Gear
• Case Material: Aluminum Case
• Operation Voltage Range: 6.0V ~ 8.4V
• Operation Temperature Range: -20°C ~ +60°C
• Control Angle: 180°/270°/360° Optional
• Direction: Re-clockwise / Pulse Travel 500→2500 usec
• Control System: PWM Control (1500usec at center)
• Cycle Life: More than 100 million times without load
• Operation Travel: 60°±1
• Limit Angle: 180°/270°/360°±1 selectable
• Dimensions: 40 x 20 x 40.5 mm
• Weight: 78g (without servo horn)
• Standing Torque: 0.12sec/60°, 34kg·cm @6.0V; 0.09sec/60°, 41kg·cm @7.4V
• Idle Current: 300mA @6.0V; 320mA @7.4V
• Running Current: 4500mA @6.0V; 5500mA @7.4V
• Connector Wire Length: 300mm, JR JST plug
• Connector Wire Gauge: 22AWG
• Wire Info (Brown): Negative
• Wire Info (Red): Positive
• Wire Info (Black): Negative
• Wire Info (Yellow): Signal

Related models and guides

Same series: HB25KG 25KG Brushless Wate | HB35KG 35KG Brushless Wate | HB45KG 45KG Brushless Wate

Browse: Brushless Waterproof Servos | all RC servos

Related ranges: brushless waterproof servos | robot arm and bionic hand servos | micro servos

Read: Brushless vs Brushed Motors for Drones

Frequently asked questions

What torque does the 45kg servo deliver?

It is rated at 45kg-cm. Transit time is High Speed. This is large-scale territory: 1:5 vehicles, industrial robot joints and UAV applications.

What voltage does this servo need?

It runs 6.0V-8.4V. Check that your BEC or receiver pack can supply the stall current before you install it.

Is this servo waterproof?

Yes, it is rated waterproof, which makes it suitable for cars, boats and outdoor robots.

Do you supply these servos in bulk?

Yes. We supply samples for validation and then repeat bulk orders with custom wiring, connectors and OEM packaging.

Related products in this range

D5545GS 45KG Coreless Waterproof Digital Servo for RC Models | DC5515 15KG Waterproof Digital Servo for RC Cars & Boats | DC5525 25KG Waterproof Digital Servo for RC Cars & Boats