INTRODUCTION

This is a high-torque waterproof coreless digital servo with a robust metal construction. It boasts an impressive torque of 35kg, allowing for precise control within a 180-degree range. With improved linear motion, it features an internal gear system made of reinforced steel gears with an optimized center distance of 2.0, enhancing its performance. The servo incorporates a dual ball bearing design and utilizes a hollow-cup motor for enhanced heat dissipation and extended lifespan.

Furthermore, the servo comes equipped with overload protection, ensuring a safer operation. When the servo stalls, the output torque exceeds the overload torque and remains at an elevated level for over 8 seconds, after which the current drops by 80%.

To enhance its water resistance, the servo's joints are fortified with waterproof gaskets, and the circuit board is coated with a waterproof varnish. Both the motor and the potentiometer are sealed with a specialized adhesive. These measures contribute to the servo's exceptional waterproof capabilities. Moreover, this servo is accompanied by a selection of different-shaped servo horns, enabling its application in a wider range of environments.

The Principle of Coreless Servo

The characteristic of a hollow cup servo is that its motor rotor is an extremely lightweight, poleless, hollow rotor, with magnets placed inside the cylinder, which is the hollow cup motor. The output power of the hollow cup servo is proportional to the distance it needs to rotate. If the output shaft needs to rotate a long distance, the control circuit will send a power pulse of maximum width to make the motor run at full speed; if it only needs to rotate a short distance, the motor will run at a slower speed.

Interface Definition Diagram

Dimensional Diagram

APPLICATIONS

Build robots

Driving part of various automated equipment

SPECIFICATION

Electrical characteristics

Operating Voltage: 5-9V

No-load Speed: 0.142sec/60°(70RPM)@6V, 0.111sec/60°(90RPM)@7.4V，0.098sec/60° (102RPM) @ 8.4V

Operating Current: 260mA@6V，300mA @7.4V，340mA@8.4V

Stall Torque: 25.1kg.cm/349.18oz.i@6V, 30.9kg.cm/429.87oz.in@7.4V，34.2kg.cm/475.78oz.in @ 8.4V

Stall Current: 2.5A@6V，3.1A@7.4V，3.6A@8.4V

Static Current: 10mA

Rated Load: 8.9kg.cm@6V， 9.8kg.cm@7.4V，11.5kg.cm@8.4V

Rated Current: 800mA@6V，1000mA@7.4V，1200mA@8.4V

Kt Constant: 9.7kg.cm/A

Control characteristics

Control Signal: PWM

Angle: 180° ± 5° (at 500 → 2500μsec)

Angle Deviation: ≤ 5°

Centering Deviation: ≤ 1°

Neutral Position: 1500μsec

Deadband Width: ≤ 4μsec

otation Direction: Counterclockwise (from 1500 to 2000 μsec)

Pulse Width: 500 → 2500 μsec

Signal High Level Voltage: 2-5V

Signal Low Level Voltage: 0-0.45V

Signal Period: 20ms

Mechanical specifications

Casing Material: PA+Aluminum

Housing Material: Aluminum

Gear Material: Steel

Bearing Type: Ball Bearing

Output Shaft: 25T/5.9mm

Gear Backlash: ≤ 0.5°

Arm Backlash: 0°

Output Shaft Screw: M3X6

Other parameters

Motor Noise: 45±5dB

Servo No-load Noise: 65±5dB

Waterproof Rating: IP54 (splash-proof)

Electronic Protection: 8 seconds stall protection

Temperature Protection: > 70°C

Storage Temperature: -20°C ~ 80°C

Operating Temperature: -10°C ~ 60°C

SHIPPING LIST

Coreless Waterproof Servo-35KG 180° x1

Metal Servo Arm x1

Servo Horn Accessories Pack x1