Overview
RJXHOBBY BLS0550THV is a brushless digital high voltage standard tail servo designed for helicopter tail use and compatible with 760µs/333hz.
Key Features
- Brushless motor
- Special narrow band version for helicopter tail servo use
- Fits 760µs/333hz
- Full metal gears
- Full aluminum alloy case
- High-voltage operation range: 4.8V-8.4V (stated capable of constant 8.2V operation)
- Includes a full set of servo hardware and servo arms
Specifications
| Model | BLS0550THV |
| Motor Type | Brushless Motor |
| Gear Type | Metal Gear |
| Operation Voltage | 4.8V-8.4V |
| Frequency | 760µs/333hz |
| Dimensions | L40 x W20 x H37mm |
| Weight | 67g |
| Torque / Speed |
11.3kg/cm, 0.028sec/60° @8.2V 10.7kg/cm, 0.035sec/60° @7.4V 9.4kg/cm, 0.045sec/60° @6.0V 4.8kg/cm, 0.056sec/60° @4.8V |
| Drawing Dimensions (mm) |
Width references: 36.9 / 33.8 / 29.8 Body length references: 40.0 / 48.0 / 54.2 Mounting width references: 20.0 / 10.0 Height references: 41.8 / 37.7 / 36.4 / 35.4 / 26.7 / 24.2 |
What’s Included
- 1x BLS0550THV Servo
- 2x Servo Arms
- 4x Rubber Grommets
- Screws and Washer
Applications
- Helicopter tail servo (760µs/333hz)
For compatibility and setup questions, contact support@rcdrone.top or visit https://rcdrone.top/.
Details

The BLS0550THV standard tail servo uses a 54.2 x 20.0 x 41.8 mm case size to help plan mounting space in a helicopter frame.
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