Product overview
The HOBBYWING M8108 HighProt is a propulsion motor for industrial multirotor UAVs, available in 85KV and 100KV versions. Its outer rotor construction uses a precision CNC-machined 7075-T651 aluminium support and a seamless-steel housing with nickel plating and electrophoretic treatment. The support and shaft form an integrated assembly, while three M2.5*8 fasteners and washers secure the shaft tail. Centrifugal cooling in the rotor support and cooling fins in the stator base aid heat dissipation. The enclosed structure carries an IP45 protection rating.
Both versions measure Φ87.1*H26.9mm and use a 4×M4@D36 motor mounting pattern, with a combined propeller mounting-hole specification of 4×M4@D23+4×M3@D20. Each has 100mm, 16AWG leads; motor weights including wires are 270g for 85KV and 271g for 100KV. Recommended propulsion combinations use 12S LiPo power, MSC 28x9.2, MSC 29x9.5 or MSC 30x9.8 propellers, and an XRotor Pro H60A 14S controller. The recommended application range is 2.5~3.5kg thrust per rotor, corresponding to a quadrotor maximum takeoff weight range of 10.0~14.0kg.
Electrical and thrust limits differ between versions: the 85KV motor has a maximum current of 27.2A and maximum thrust of 7.2kg, compared with 34.3A and 9.3kg for 100KV. The maximum-current ratings apply in a non-enclosed environment at an ambient temperature of ≤25°C. Both versions have a rated maximum continuous output of 238W. Winding insulation receives a 500V AC withstand test; the enamelled wire has a 220°C grade and the magnets a 180°C grade. These component temperature grades describe the respective materials.
Specifications
| Specification | Value & conditions |
|---|---|
| Earlier name | M8108 HPListed for M8108 HighProt |
| Battery | 12S LiPoSpecified for M8108 HighProt |
| Recommended thrust | 2.5~3.5 kg/rotorManufacturer recommendation per rotor; listed with 12S LiPo and 85KV/100KV options |
| Product identity and application | M8108 HighProt industrial multirotor drone motorProduct designation and intended application. |
| Motor versions | 85KV and 100KVSeparate versions of M8108 HighProt. |
| Support and shaft construction | Integrated design reduces parts and simplifies assemblyConstruction of the motor support and shaft. |
| Cooling design | Centrifugal air cooling and stator-base cooling finsCooling features incorporated into the rotor support and stator base. |
| Product type | HOBBYWING M8108 HighProt industrial multirotor UAV motor |
| Motor dimensions | Φ87.1*H26.9mmBoth motor versions. |
| Stator construction | High-quality silicon steel laminations with rust treatment and a coating resistant to 180°CBoth motor versions. |
| Wire temperature grade | 220°CBoth motor versions; enamelled wire rating. |
| Magnet temperature grade | 180°CBoth motor versions; magnet rating. |
| Insulation withstand voltage | 500V ACBoth motor versions; winding insulation test. |
| Dust and water protection | IP45Both motor versions. |
| Slots and poles | 36 slots, 42 polesBoth motor versions. |
| Dynamic balance standard | ≤10mgBoth motor versions; complete motor. |
| Bearings | High-quality waterproof bearingsBoth motor versions. |
| Output shaft diameter | Φ10mmBoth motor versions; shaft sleeve. |
| Propeller mounting holes | 4×M4@D23+4×M3@D20Both motor versions. |
| Motor mounting holes | 4×M4@D36Both motor versions. |
| Rated battery voltage | 12S LiPoBoth motor versions. |
| No-load current | 0.67A / 1.11A85KV and 100KV versions, respectively; no load. |
| Maximum current | 27.2A / 34.3A85KV and 100KV versions, respectively; non-enclosed environment at ambient temperature ≤25°C. |
| Maximum thrust | 7.2kg / 9.3kg85KV and 100KV versions, respectively. |
| Phase-to-phase resistance | 241.2mΩ / 163.3mΩ85KV and 100KV versions, respectively. |
| Lead wire gauge | 16AWGBoth motor versions. |
| Lead length | 100mmBoth motor versions. |
| Motor weight | 270g / 271g85KV and 100KV versions, respectively; including wires. |
| Rated output power | 238WBoth motor versions; maximum continuous output. |
| Propellers | MSC 28x9.2 / MSC 29x9.5 / MSC 30x9.8Recommended pairing for both motor versions. |
| Electronic speed controller | XRotor Pro H60A 14SRecommended pairing for both motor versions. |
| Application thrust | 2.5~3.5kgRecommended application range per rotor for both motor versions. |
| Maximum takeoff weight | 10.0~14.0kgRecommended quadrotor application for both motor versions. |
| Rotor support material | Precision CNC-machined 7075-T651 aviation aluminium |
| Outer rotor housing | 20# seamless steel tube with nickel plating and electrophoretic treatment |
| Main shaft retention | Three M2.5*8 fasteners and washers at the shaft tail |
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