INO-Lab HG-D751MG - Standard Servo

Specifications

Source: Most data comes from the manufacturer but some data is sourced from our loyal community.

Last Updated:	2025-08-10
Modulation:	Digital
Torque:	4.8V: 170.80 oz-in (12.30 kg-cm) 6.0V: 215.30 oz-in (15.50 kg-cm)
Speed:	4.8V: 0.14 sec/60° 6.0V: 0.11 sec/60°
Weight:	1.90 oz (53.8 g)
Dimensions:	Length:1.55 in (39.4 mm) Width:0.77 in (19.6 mm) Height:1.44 in (36.6 mm)
Motor Type:	Coreless
Gear Type:	Metal
Rotation/Support:	Dual Bearings
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

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The discontinued INO-Lab HG-D751MG is a top-tier giant-scale digital servo that is a counterpart to the HG-D750MG, but with a focus on delivering a higher transit speed. While still featuring a durable all-metal gear (MG) train and immense power, its motor and digital controller are tuned for velocity. This makes it a specialized tool for agile giant-scale aircraft. The HG-D751MG is the premier choice for the massive ailerons on a 30% to 40% scale 3D aircraft to achieve a blistering roll rate, or for the rudder to enable lightning-fast snap maneuvers.
The defining characteristic of the HG-D751MG is its agile, giant-scale performance. It allows pilots of very large aircraft to have a control system that feels nimble and responsive, not slow and heavy. This can completely transform the flying experience of a large 3D plane, making it feel much more reactive and capable. It is a servo for the advanced giant-scale pilot who demands both power and a high-speed, dynamic response from their control system.
For roboticists, the INO-Lab HG-D751MG's combination of size, speed, and precision is very valuable. It would be an excellent choice for the primary joints of a large but fast-moving robotic arm, or for any large-scale automation task where cycle time is a critical factor. It enables the creation of large robots that can move with surprising speed and agility.