In Stock Now!!!!!!! The Latest and greatest from Blue Bird Precision. The BLS-M52B V2, High Voltage, Mega Torque, Helical Gears, Brushless Motor, Digital with Magnetic Hall Sensor The Powerful BLS-H51B just got better with the new Magnetic Sensored BLS-M52B!!! Smoother.More Precision.More Reliable & More Efficiency. Helical Gears for supreme strength and precision.


Magnetic Sensor (Hall effect sensor, no potentiometer) Soft Start Protection Over Voltage Protection Low Voltage Protection Locked Rotor Protection Temperature Protection Includes Aluminum Servo Arm



Awesome for 3D Airplane, Jet & 1/5、1/8th Monster / Crawler / Off-road Car & Helicopter.


Performance Specifications

Torque At 6.0V    46.2 kg-cm / 641.7 oz-in
Torque At 7.4V    55.7 kg-cm / 773.6 oz-in
Torque At 8.4V    62.9 kg-cm / 873.6 oz-in
Speed At 6.0V    0.12 sec / 60°
Speed At 7.4V    0.10 sec / 60°
Speed At 8.4V    0.09 sec / 60°


Protection Mechanisms

Soft Start


Soft start to a neutral position.
Over Voltage Protection                Over 9.0V drive the protection mode and 8.4V return to normal mode.
Low Voltage Protection Lower than 4.0V, drive the protection mode and 4.5V return to normal mode.
Locked Rotor Protection                   Stall in 5 sec, output torque goes down.
Temperature Protection Overheat 85 degrees C (185 degrees F), drive the protection mode and down 75 degrees C (167 degrees F) return to normal mode.
Lose Control Protection When losing the transmitter signal, that servo will be back to the neutral position immediately and lock.


Power Supply

Operating Voltage Range 4.5V ~ 8.5V ( 4 ~ 6 Cell Ni-MH or 2S HV Li-Poly / 2S Li-Fe)


Control Specification 

Control System Digital Controller / AD 12-Bits Resolution ( 4096 Steps )
Frequency:Up to 333Hz / Neutral:1500us or 1520us
Dead Band Width 0.001ms ( Default:1us)
Potentiometer (Variable    Resistor) Magnetic Sensored 【Hall Sensor】


Mechanical Specifications

Ball Bearing    Dual, Stronger Ball Bearings
Gear    All Stainless Steel Helical Gears
Outside Case    Full One-Piece Aluminum CNC Casing
Motor    High-Efficiency Japanese Brushless Motor
Horn / Gear Spline    25 Teeth ( Same as F-Type )


Dimensions and Weight

Dimension (mm)    40.5 x 21 x 38.5 mm / 1.59 x 0.83 x 1.52 in
Weight (gram)    83.0 ± 1 grams / 2.93 oz

BLS-M52B V2 Magnetic Sensor Helical Gear Servo

$139.99 Regular Price
$125.99Sale Price

    © 2020 by Blue Bird Servos USA. Proudly created by Jake Shedroff