MKS HV9930 High-Voltage Coreless Servo — Titanium Gear, 597.1 oz/in (8.4V)
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The MKS HV9930 is a high-voltage coreless servo built for demanding 1/10 and 1/8 scale RC applications where torque, speed, and durability are non-negotiable. Running on 6.0–8.4V, it delivers up to 597.1 oz/in (43 kg/cm) of stall torque at 8.4V with a blazing 0.098 sec/60° transit speed — making it one of the most capable servos in its class for competitive racing and high-performance bashing.
The coreless motor eliminates the inertia of a traditional iron-core armature, delivering instant throttle response and precise centering. Titanium alloy gears provide exceptional strength-to-weight ratio, resisting wear and stripping under the high loads of aggressive steering inputs. Dual ball bearings ensure smooth, consistent operation run after run.
Key Features
- Coreless motor for instant response and precise centering
- Titanium alloy metal gears for maximum durability and strip resistance
- 597.1 oz/in (43 kg/cm) stall torque at 8.4V
- 0.098 sec/60° transit speed at 8.4V
- 6.0–8.4V high-voltage operating range (2S LiPo compatible)
- Dual ball bearings for smooth, consistent operation
- Indirect drive potentiometer for accurate position feedback
- Compact 40 x 20 x 40mm footprint, 74g
Specifications
| Part Number | MKS-HV9930 | |
| Operating Voltage | 6.0 – 8.4V DC | |
| Stall Torque (6V) | 31.4 kg/cm — 436 oz/in | |
| Stall Torque (7.4V) | 38.8 kg/cm — 538.8 oz/in | |
| Stall Torque (8.4V) | 43.0 kg/cm — 597.1 oz/in | |
| Speed (6V) | 0.135 sec/60° | |
| Speed (7.4V) | 0.110 sec/60° | |
| Speed (8.4V) | 0.098 sec/60° | |
| Motor Type | Coreless | |
| Gear Type | Titanium Alloy Metal | |
| Bearing Type | Dual Ball Bearings | |
| Control System | +Pulse Width Control | |
| Working Frequency | 1520μs / 333Hz | |
| Dead Band | 0.0007ms (default) | |
| Dimensions | 40 x 20 x 40mm (1.57 x 0.79 x 1.57 in) | |
| Weight | 74g (2.64 oz) | |
| Operating Temp Range | -10°C to +60°C | |
Compatibility
Suitable for 1/10 and 1/8 scale RC cars, buggies, and trucks requiring a high-voltage servo. Verify fitment and receiver/ESC BEC voltage output before purchasing. A regulated HV BEC or 2S LiPo receiver pack is recommended for full 8.4V performance.