GWS S666F/2BB - Heavy Duty Servo

Specifications

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

Last Updated:	2025-08-07
Modulation:	Analog
Torque:	4.8V: 139.00 oz-in (10.01 kg-cm) 6.0V: 167.00 oz-in (12.03 kg-cm)
Speed:	4.8V: 0.22 sec/60° 6.0V: 0.18 sec/60°
Weight:	5.01 oz (142.0 g)
Dimensions:	Length:2.48 in (63.0 mm) Width:1.26 in (32.0 mm) Height:2.43 in (61.7 mm)
Motor Type:	(add)
Gear Type:	(add)
Rotation/Support:	Dual Bearings
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

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The discontinued GWS S666F/2BB is a high-performance, giant-scale analog servo from the powerful 666 series, with the ""F"" designation indicating it is tuned for ""Fast"" transit speeds. It also features a precise Dual Ball Bearing (2BB) supported output shaft for smooth, slop-free operation. This servo is engineered for giant-scale applications where a rapid response is just as important as high power. It is an outstanding choice for the large ailerons on a 25% to 30% scale 3D or aerobatic aircraft to achieve a high roll rate. It is also a fantastic rudder servo for enabling crisp, fast snap maneuvers.
The character of the S666F/2BB 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. The dual ball bearings ensure that this high-speed performance is delivered with the precision and accuracy that is essential for confident, aggressive flying.
For roboticists, the GWS S666F/2BB'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."