Parts/Radio & control/Servos/Spektrum RC A4040 MT/HS Micro Metal Gear Servo (High Voltage)
Spektrum RC A4040 MT/HS Micro Metal Gear Servo (High Voltage)
Spektrum RC

Spektrum RC A4040 MT/HS Micro Metal Gear Servo (High Voltage)

Part # SPMSA4040
Where to buy
$49.99
AMain Hobbies
Seen Oct 12, 2026
$49.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

The Spektrum RC A4040 MT/HS Micro Metal Gear Servo is a great option for high performance smaller sport planes (15-25 size). High voltage capable, this servo can produce 96oz of toque at 0.094sec/60° with 8.4V input. A low wear metal gear drive train is supported by a single ball bearing for smooth operation. Completing the build is a center aluminum band for added reliability and durability. Take to the skies with the Spektrum RC A4040 servo.

Features:
  • High Voltage (HV) capable (4.8-8.4v input range)
  • Micro size is perfectly suited for parkflyer and sport size model aircraft
  • Class leading performance (7.0kg-cm and .094 sec/60° @8.4v)
  • Aluminum servo case helps keep operating temperatures low
  • Low wear and tightly meshed all metal gear train
  • Bearing supported drive train helps maximize smooth operation
  • Over Current and Temperature protection
  • Operating Frequency: 200hz to 333hz
Specifications:
  • Input Voltage: 4.8V-8.4V
  • Overload Protection: No
  • Motor Type: Coreless Brushed
  • Product Weight: 1.2oz (34g)
  • Spline Count: 23 - Tooth
  • Deadband: <1us
  • Servo Speed:
    • 6.0V: 0.14 sec/60 deg
    • 7.4V: 0.11 sec/60 deg
    • 8.4V: 0.094 sec/60 deg
  • Torque:
    • 6.0V: 84 oz-in (6.05kg-cm)
    • 7.4V: 91 oz-in (6.55kg-cm)
    • 8.4V: 96 oz-in (7.00kg-cm)
  • Bearing: Single BB
  • Length: 1.1" (28 mm)
  • Width: 0.54" (13.7 mm)
  • Height: 1.23" (31.24 mm)
  • Programmable: No
  • Servo Type: Digital
  • Gear Type: Metal
Includes:
  • (1) A4040 Micro Digital Servo
  • (4) Pre-installed Mounting Grommets and Eyelets With Hardware
  • (3) Plastic Servo Arms
  • (1) Screw
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

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