KST BLS835 HV Brushless Digital Servo

The KST BLS835 is a high-performance, high-voltage brushless digital servo engineered for demanding 550–700 class helicopters. At 8.4V, it delivers an impressive 45.0kgf·cm of stall torque with a fast 0.13 sec/60° speed, providing the power and response needed for high-load helicopter applications.

Built for durability and precise control, the BLS835 features a rugged aluminum alloy housing for improved heat dissipation, a hardened steel geartrain, and dual ball bearings for smooth and reliable operation. Its programmable brushless DC motor provides additional flexibility for fine-tuning the servo to suit different setups.

The BLS835 also features soft-start functionality to help provide smoother and more controlled servo movement during startup. With a rated operating temperature range of -20°C to +65°C, it is designed to maintain reliable performance across demanding conditions.

Combining extreme torque, fast response, high-voltage capability, and programmable brushless performance, the BLS835 is a powerful choice for serious 550–700 class helicopter setups.

Features

• Ultra High Torque & Excellent Speed
• Hardened Steel Gear
• CNC Aluminium Case
• High Quality Brushless Motor
• Dual Ball Bearings
• Ideal for 550-700 Class Helicopters

Specification

Package Includes

• 1 * BLS835 HV Servo
• 5 * Plastic Servo Horn
• 1 * Servo Horn Screw
• 4 * Eyelet
• 4 * Grommet
• 4 * Mounting Screw