Product overview
The cysmodel CYS BLS9120 20Kg is a waterproof digital servo for steering and throttle in 1/10 model cars, fixed-wing aircraft and robots. Its construction combines an all-metal housing, brushless motor, steel gears and dual bearings. The servo body measures 40*20*41.4mm and weighs 81±1g, providing concrete dimensions and mass for installation planning. Mechanical connection uses a 25T output spline. A 300mm lead carries power and control, with brown/black identifying negative, red positive and orange/white the signal wire.
Electrical integration requires a 6.0-7.4V supply and PWM control with a 1500usec neutral position. Reverse operation uses a 1000usec ~ 2000 usec pulse range, with 90° total travel, 45° to either side and a 2usec deadband. At 6.0V, torque is 17kg.cm and no-load speed is 0.10sec/60°; at 7.4V, these are 20kg.cm and 0.08sec/60°. Standby/no-load current is 20mA/120mA at 6.0V and 20mA/150mA at 7.4V. Stall current is 3.0A/3.8A, and the operating temperature range is (-)10 to +50 °.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | Cysmodel CYS BLS9120 20Kg high-torque, all-metal brushless digital servo |
| Type | Brushless |
| Weight | 81±1g |
| Dimensions | 40*20*41.4mm |
| Control method | PWM signal control; neutral position 1500usec |
| Operating voltage | 6.0-7.4V |
| Temperature range | (-)10 to +50 ° |
| No-load speed at 6.0V | 0.10sec/60°At 6.0V; no load. |
| No-load speed at 7.4V | 0.08sec/60°At 7.4V; no load. |
| Torque at 6.0V | 17kg.cmAt 6.0V. |
| Torque at 7.4V | 20kg.cmAt 7.4V. |
| Operating angle | 90° total; 45° to either side |
| Operating direction | Reverse; range 1000usec ~ 2000 usecPulse range 1000usec ~ 2000 usec. |
| Standby / no-load current at 6.0V | 20mA/ 120mAAt 6.0V; standby / no-load operation respectively. |
| Standby / no-load current at 7.4V | 20mA/ 150mAAt 7.4V; standby / no-load operation respectively. |
| Stall current | 3.0A/3.8AStalled operation. |
| Deadband | 2usec |
| Motor type | Brushless |
| Bearing arrangement | Dual bearings |
| Output spline tooth count | 25T |
| Gear type | Steel gears |
| Lead length | 300mm |
| Torque range | 17Kg.cm ~20Kg.cm17kg.cm at 6.0V; 20kg.cm at 7.4V. |
| Speed range | 0.10sec ~ 0.08sec/60 °No load; 0.10sec/60° at 6.0V and 0.08sec/60° at 7.4V. |
| Voltage range | 6.0Volts ~7.4Volts |
| Weight in product overview | 81g±1g |
| Housing | All-metal housing |
| Waterproof construction | Waterproof servo |
| Applications | Steering and throttle for 1/10 model cars; fixed-wing aircraft; robots |
| Wire identification |
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