RC Servos

We carry a wide variety of servos, all of which are compatible with our servo controllers except for the Surplus Hitec HS-5475HB servo. The sizes range from a giant-scale servo with up to 583 oz-in of torque to a sub-micro servo weighing less than 1/4 of an ounce. We also offer several unique servos:

• The Parallax continuous rotation servo is a Futaba S148 servo that has been modified for continuous rotation, giving you a quick and easy way to get your robot rolling.
• Our Surplus Hitec HS-5475HB servos have had their control electronics removed, but each offers a high-quality servo casing, 3-pole ferrite motor, and heavy-duty Karbonite geartrain complete with two ball bearings, all at a heavily discounted price.
• The Joinmax digital servo has a rotating arm in the body of the servo in addition to the typical output shaft at the top of the servo.

Whatever your application, we probably have a servo for it!

Note: The servos must be connected to a servo controller, RC receiver, or microcontroller to be used. All of the servos have Futaba or Futaba-compatible cable connections.

Servo Specification Comparison Table

Item	Size mm	Weight g/oz	Lead length mm/in	Hardware included?	4.8 V		6 V
					Speed sec/60°	Torque kg-cm/oz-in	Speed sec/60°	Torque kg-cm/oz-in
Parallax Cont. Rotation	40.5 x 20.0 x 38.0	43/1.5	270/11	Yes	0.28	2.4/33.3	0.22	3.0/41.7
Joinmax Digital	52.3 x 20.0 x 33.5	33/1.16	250/10	Yes	not available	not available	0.18	3.5/48.6
GWS PICO	22.8 x 9.5 x 15.50	5.4/0.19	100/4	Yes	0.12	0.70/10	0.09	0.84/12
GWS NARO+ F/HP/BB	22.2 x 11.00 x 22.85	10/0.36	130/5	Yes	0.10	1.70/24	not recommended
GWS NARO PRO	27.0 x 12.7 x 22.4	13/0.46	130/5	Yes	0.12	1.60/22	not recommended
GWS PARK L	30.86 x 16.17 x 26.5	17/0.59	120/4.5	Yes	0.13	2.4/33	0.10	2.8/39
GWS PARK HPX F	30.86 x 16.17 x 28.5	19/0.67	120/4.5	Yes	0.07	3.0/42	0.05	3.6/50
GWS MINI	35.0 x 16.9 x 32.0	24.3/0.86	130/5	Yes	0.19	3.40/47	0.15	4.20/58
GWS MINI L	35.0 x 16.9 x 27.0	21.7/0.77	130/5	Yes	0.14	3.60/50	0.11	4.40/61
GWS S03N	39.5 x 20.0 x 39.6	41/1.44	270/11	Yes	0.23	3.40/47	0.18	4.00/56
GWS S03N 2BB	39.5 x 20.0 x 39.6	64/2.26	270/11	Yes	0.23	3.40/47	0.18	4.20/58
GWS S03N XF	39.5 x 20.0 x 39.6	41/1.44	270/11	Yes	0.15	2.20/31	0.12	2.45/34
GWS S03T	39.5 x 20.0 x 39.6	46/1.62	270/11	Yes	0.33	7.20/100	0.27	8.00/111
GWS S125	40.5 x 20 x 42	50/1.76	270/11	Yes	0.26	6.6/92	0.21	7.6/106
GWS S04 BBM	54.4 x 26.5 x 51.5	114/4.00	270/11	Yes	0.25	10.00/138.88	0.20	13.00/180.50
GWS S666N 2BB MG	63.0 x 32.0 x 61.6	160.4/5.66	270/11	Yes	0.24	24.00/333	0.20	28.80/400
GWS S777 6BB	65.0 x 32.0 x 70.4	190/6.70	270/11	Yes	0.15	35/486	0.12	42/583

	On sale! New! Pololu part #: 536 Price: $11.95 $12.95 Quantity:
Parallax (Futaba S148) Continuous Rotation Servo The Parallax continuous rotation servo is a Futaba S148 servo that has been modified for continuous rotation. Since servos have their own integrated control circuitry, this unit gives you an easy way to get your robot moving.

	New! Pololu part #: 695 Price: $12.95 Quantity:
Surplus Hitec HS-5475HB Servo no Electronics These are Hitec HS-5475HB servos with the electronics removed. These units can easily be converted to continuous-rotation gearmotors by clippling off the rotation limitation nub on the output gear. The output shaft is supported by two ball bearings, and the geartrain uses four heavy-duty Karbonite gears.

	Pololu part #: 94 Price: $13.95 Quantity:
Joinmax Digital Servo This servo made by Joinmax Digital is the same one used in the Joinmax Digital robotics kits such as the Hexapod Monster. The unique arm on the output shaft allows for mounting options not available with any other servo.

	Pololu part #: 501 Price: $15.95 Quantity:
GWS PICO Sub-Micro Servo The GWS PICO Sub-Micro Servo is the smallest servo we carry, and it is the perfect tiny actuator for a small robot mechanism. Even the leads are extra thin to keep weight down.

	Pololu part #: 520 Price: $17.95 Quantity:
GWS NARO+ F HP BB Micro Servo The GWS NARO+ F HP BB Micro Servo is a small, quick, 22.2mm  x 11.00mm x 22.85mm servo, recommended for use at 4.8 V.

	Pololu part #: 521 Price: $12.95 Quantity:
GWS NARO PRO Sub-Micro Servo The GWS NARO PRO Sub-Micro Servo is among the fastest servos we carry; it is recommended for use at 4.8 V.

	Pololu part #: 505 Price: $15.95 Quantity:
GWS PARK L Mini Servo The GWS PARK L Mini Servo would have been considered a micro servo until the recent introduction of extremely tiny servos like the PICO and NARO. This miniature servo has almost the same power as a standard servo, and the transparent case makes it especially well suited for science projects and demonstrations.

	New! Pololu part #: 649 Price: $16.95 Quantity:
GWS PARK HPX F Mini Servo The GWS PARK HPX F Mini Servo would have been considered a micro servo until the recent introduction of extremely tiny servos like the PICO and NARO. This miniature servo has almost the same power as a standard servo, and the transparent case makes it especially well suited for science projects and demonstrations. The PARK HPX F is more powerful than the PARK L and is almost twice as fast.

	Pololu part #: 506 Price: $11.95 Quantity:
GWS MINI Mini Servo The GWS MINI servo is slightly smaller and lighter than a standard servo, but it delivers the performance of a standard servo. Best of all, you get a mini servo at the price of a cheap standard servo.

	New! Pololu part #: 692 Price: $12.95 Quantity:
GWS MINI L Mini Servo The GWS MINI L servo delivers the performance of a standard servo in a smaller and lighter package. The MINI L is slightly smaller, faster, and more powerful than the MINI.

	Pololu part #: 519 Price: $11.95 Quantity:
GWS S03N Standard Servo The GWS S03N Standard Servo is the higher-torque option between the S03N models we carry, providing 56 oz-in at a speed of 0.18 seconds per 60 degrees of motion at 6 V.

	New! Pololu part #: 693 Price: $14.95 Quantity:
GWS S03N 2BB Standard Servo The GWS S03N 2BB Standard Servo has two ball bearings on the output shaft. These ball bearings decrease internal friction and allow for slightly increased torque over the GWS S03N.

	Pololu part #: 518 Price: $11.95 Quantity:
GWS S03N XF Standard Servo The GWS S03N XF Standard Servo is the faster option between the S03N models we carry, providing 34 oz-in at a speed of 0.12 seconds per 60 degrees of motion at 6 V.

	Pololu part #: 507 Price: $11.95 Quantity:
GWS Servo S03T The GWS S03T servo is a standard-sized servo with an extra-high gear ratio that provides almost double the torque of a typical servo. The servo is 4 mm taller than most standard servos.

	Pololu part #: 522 Price: $19.95 Quantity:
GWS S125 1T BB Sail Winch Servo The GWS S125 1T BB Sail Winch Servo is a unique servo (typically used for radio control sail boats) that can rotate a full 360 degrees, rather than the typical range of less than 180 degrees for most servos.

	Pololu part #: 517 Price: $19.95 Quantity:
GWS S04 BBM Large Servo The GWS S04 BBM Large Servo is a great value: a heavy duty, giant servo that packs over 180 oz-in for less than $20!

	Pololu part #: 513 Price: $49.00 Quantity:
GWS S666N 2BB MG Giant Servo For projects that require brute strength, look no further than the GWS S666N 2BB MG giant-scale servo. This servo will deliver eight times the torque of a standard servo, has two ball bearings, and has metal gears to handle those extra-tough loads.

	Pololu part #: 516 Price: $79.00 Quantity:
GWS S777 6BB Giant Servo The GWS S777 6BB Giant Servo is our largest, heaviest-duty servo, weighing it at 6.7 oz and providing 583 oz-in of torque.