MKS Servos HBL990 Brushless Titanium Gear High Speed Digital Tail Servo (High Voltage)

MKS HBL990 Brushless Titanium Gear High Speed HV Digital Tail Servo is designed for RC helicopter tail rotor applications. Its 4-pole brushless motor and chrome-titanium alloy gears provide fast response and precise control under repeated tail inputs. At 8.2V, it delivers 87.4 oz-in (6.3 kg-cm) stall torque and a 0.030 sec/60° transit speed.

Key Features

• 4-pole brushless motor for fast response and long service life
• Chrome-titanium alloy gears for precision and durability
• High-voltage 3.5-8.4V operation, including an unregulated 2S LiPo supply within that range
• 760 microseconds / 560Hz tail-servo signal specification
• Dual ball bearings for smooth output shaft operation
• Default dead band of 0.0008ms
• 40 x 20 x 40mm dimensions and 70.55g servo weight

Compatibility

For RC helicopter tail rotor applications with a compatible gyro or flight controller. Verify 760-microsecond center-pulse support, output frequency, power supply voltage, servo mounting and horn fitment before installation. Do not substitute standard 1520-microsecond settings.

The existing product information lists the following compatible gyros. Confirm the appropriate tail-servo settings in the gyro manual before use:

• Spartan DS760 and Quark
• Futaba GY611, GY601 and GY520
• ALIGN GP700 and GP750
• Mikado V-Bar Tail
• CSM SL720
• Curtis Youngblood Mini-G and Solid G
• Thunder Tiger TG-7000
• BeastX Microbeast

Specifications