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FlashHobby BLS4048RP

The FlashHobby BLS4048RP is a programmable digital brushless servo with steel gears, a CNC AL6061 aluminum case and a dual-ball-bearing output shaft. Operating on 6.0–8.4 Volts DC, it delivers 48.0kg-cm stall torque and 0.09sec/60° operating speed at 8.4V, with support for Sanwa SSR, NB4 and Futaba modes.

FlashHobbyDrone motor
Weight
80g±10g
Dimensions
40x20x40.50 mm
Operating voltage
6.0 ~ 8.4 Volts DC

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Product overview

The FlashHobby BLS4048RP is a programmable brushless servo for digital position control, with support for Sanwa SSR, NB4 and Futaba modes. Its programmable PWM digital amplifier and 32-bit MCU provide adjustable end points, direction, fail-safe and dead band. Speed reduction, soft start rate and overload protection are also programmable, alongside data save/load and program reset. The servo operates on 6.0–8.4 Volts DC and incorporates a 300MM connector wire with a JR plug.

Steel helical gears drive a 25-tooth output spline, with dual ball bearings supporting the output shaft. The CNC AL6061 aluminum case features a diamond-cut heat sink shell and a water-resistant, waterproof construction. Dimensions are 40x20x40.50mm, and weight is 80g±10g without the servo horn. At 6.0V, operating speed is 0.13sec/60° with 36.0kg-cm stall torque; at 7.4V, these figures are 0.10sec/60° and 42.0kg-cm. At 8.4V, speed reaches 0.09sec/60° with 48.0kg-cm stall torque.

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Specifications

FlashHobby BLS4048RP specifications
SpecificationValue & conditions
ProductFlashHobby BLS4048RP 48KG BLS Servo
Dimensions40x20x40.50mm
Weight80g±10gWithout servo horn.
Gear materialSteel
Operating speed at 6.0V0.13sec/60°6.0V.
Operating speed at 7.4V0.10sec/60°7.4V.
Operating speed at 8.4V0.09sec/60°8.4V.
Stall torque at 6.0V36.0kg-cm/500 oz-in6.0V.
Stall torque at 7.4V42.0kg-cm/583 oz-in7.4V.
Stall torque at 8.4V48.0kg-cm/666 oz-in8.4V.
Motor typeBrushless motor
Signal typeDigital control
Case material and constructionCNC AL6061 aluminum case
Connector wire300MM wire with JR plug
AmplifierProgrammable PWM digital amplifier
Controller32-bit MCU
Operating voltage6.0 ~ 8.4 Volts DC
Output shaft supportDual ball bearings
Output spline25-tooth
Heat sink shellDiamond-cut aluminum heat sink shell
Case water protectionWater-resistant and waterproof case
Compatible modesSanwa SSR, NB4 and Futaba mode
Gear designHelical gears with low backlash, strong engagement, low noise and smooth operation
Programmable travel and directionEnd point adjustments and direction
Programmable fail-safe and dead bandFail-safe and dead band
Programmable speed and start behaviorSpeed reduction and soft start rate
Programmable protectionOverload protection
Programmable data managementData save/load and program reset

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