Airtronics/ Sanwa 94557Z - Microlite High Torque Servo

Specifications

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

Last Updated:	2025-08-03
Modulation:	(add)
Torque:	4.8V: 31.00 oz-in (2.23 kg-cm) 6.0V: 39.00 oz-in (2.81 kg-cm)
Speed:	4.8V: 0.24 sec/60° 6.0V: 0.19 sec/60°
Weight:	0.71 oz (20.1 g)
Dimensions:	Length:1.06 in (26.9 mm) Width:0.49 in (12.4 mm) Height:1.28 in (32.5 mm)
Motor Type:	Coreless
Gear Type:	(add)
Rotation/Support:	(add)
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

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The discontinued Airtronics 94557Z is a 'Microlite High Torque' servo that defies its small size by delivering an impressive amount of power. This servo is the perfect solution for applications where a standard-sized servo is too large or heavy, but a standard micro servo lacks the required muscle. It is an ideal choice for the flaps and ailerons of larger sailplanes and electric gliders, where its high torque can easily overcome the aerodynamic forces on the control surfaces, even at high speeds. The 94557Z is also an excellent choice for the control surfaces of larger park flyers and small electric 3D aircraft, where its combination of power and low weight can significantly enhance the model's aerobatic capabilities.
At the heart of the 94557Z is a powerful coreless motor that provides a smooth and responsive feel, while the durable gear train ensures a reliable and long-lasting performance. Its compact size and high torque-to-weight ratio make it a valuable component for a wide range of RC and robotics projects. For the robotics engineer, the 94557Z offers a powerful and compact actuation solution for grippers, robotic joints, and other applications where space is at a premium but a significant amount of force is required. For the builder who is looking to save weight without sacrificing power, the Airtronics 94557Z is an exceptional choice, offering a remarkable combination of performance and miniaturization.