Parallax (Futaba S148) continuous rotation servo.

Overview

The Parallax (Futaba S148) continuous rotation servo converts standard RC servo position pulses into continuous rotation speed. It can be controlled directly by a microcontroller without any additional electronics, which makes it a great actuator for robotics projects. The servo includes an adjustable potentiometer that can be used to center the servo and comes with a star-shaped servo horn and an 11″ (270 mm) lead.

Specs

  • Power: 4.8 – 6 V
  • Top 6 V speed: 50 RPM (with no load)
  • Torque: 2.7 kg-cm/38 oz-in at 6 V
  • Weight: 43 g/1.5 oz with servo horn and screw
  • Size (L x W x H): 40.5 mm x 20.0 mm x 38.0 mm / 1.60" x 0.8" x 1.50"
  • Control interface: RC servo pulse width control, 1.50 ms neutral
  • Manual adjustment port

This servo is compatible with our servo controllers and our servo wheels and sprockets.

Continuous rotation servo comparison

Continuous rotation servo size comparison. From left to right: SpringRC SM-S4303R, Power HD AR-3606HB, Parallax, and FEETECH FS90R.

SpringRC SM-S4303R PowerHD AR-3606HB Parallax (Futaba S148) FEETECH FS90R
Max Speed @ 6 V: 54 RPM 71 RPM 50 RPM 130 RPM
Stall torque @ 6 V: 71 oz-in 93 oz-in 42 oz-in 21 oz-in
Max Speed @ 4.8 V: 43 RPM 62 RPM 39 RPM 100 RPM
Stall torque@ 4.8 V: 46 oz-in 83 oz-in 33 oz-in 18 oz-in
Weight: 41 g 40 g 43 g 9 g
Size (mm): 41.3×20.7×40.2 40.5×20.0×38.0 40.5×20.0×38.0 23.2×12.5×22
Price: $12.95 $14.95 $13.95 $4.95

Specifications

Dimensions

Size: 40.5 × 20.0 × 38.0 mm
Weight: 43 g

General specifications

Digital?: N
Speed @ 6V: 0.22 sec/60°1
Stall torque @ 6V: 3.0 kg·cm
Speed @ 4.8V: 0.28 sec/60°
Stall torque @ 4.8V: 2.4 kg·cm
Lead length: 270 mm
Hardware included?: Y

Notes:

1
About 50 RPM.

Resources

(PL-536)

SKU PL-536
Brand Parallax

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