EMAX Pro 2814

What you get for $31.99

• 4 kg on 6S

  On EMAX’s 25.2 V bench the 830KV pulled 4,020 g at full throttle on an AVIA 1050 three-blade, drawing 62.4 A; the 730KV pulled 3,460 g on the same prop at 46.6 A.

  Source: EMAX 830KV thrust tables, EMAX 730KV thrust tables

• 6.74 g/W at 370 g

  Making 370 g of thrust on an AVIA 1050 at 25.2 V, the 730KV ran at 6.74 g/W.

  Source: EMAX 730KV thrust tables

• Rated for 180 °C

  EMAX uses N52UH magnets and AIW wire rated for 220 °C, and rates the motor for 180 °C, with 200 °C as its maximum.

  Source: EMAX USA product page

• 7075 aluminium, steel shaft

  A 7075 aluminium bell on a steel shaft and G1-grade bearings; EMAX makes the Pro Series for heavy-lift drones carrying payloads.

  Source: EMAX USA product page

What to pair it with

Our reading of EMAX’s numbers, so your build matches what the motor was tested with.

ESC

EMAX rates the peak current on 6S at 48 A (730KV) and 63 A (830KV); on its bench the 830KV drew 62.4 A at full throttle on an AVIA 1050 and the 730KV 47.4 A on an HQ 1050. A 50 A ESC covers the 730KV; the 830KV needs one rated for at least 65 A. (EMAX spec sheet, EMAX 730KV thrust tables, EMAX 830KV thrust tables)

Props

9 to 10-inch for the 730KV and 8 to 9-inch for the 830KV. On 6S the 730KV pulled 2,760–3,460 g at full throttle on five 9 and 10-inch props, and the 830KV 3,190–4,020 g, most on the 10-inch ones. (EMAX spec sheet, EMAX 730KV thrust tables, EMAX 830KV thrust tables)

Battery

6S: EMAX rates both KVs for 3S–6S, gives their peak figures on 6S and tested them at 25.2 V. (EMAX spec sheet, EMAX 730KV thrust tables, EMAX 830KV thrust tables)

Frame

Four M3 holes on a 19 mm circle (19 × 19 mm). (EMAX spec sheet)

Where to buy

• EMAX USAthe maker’s US store; same price for both KVs
  $31.99seen Oct 19, 2026
  Visit
• EMAXthe maker’s global store; 730KV and 830KV
  $49.26seen Oct 19, 2026
  Visit

Plain links, not affiliate links. Prices change; the store’s page has the current one.

Full specs

Bench data

Redrawn from EMAX’s test reports. Thrust is static pull on a bench, more than you get in flight. Power is volts × amps; efficiency is thrust divided by power.

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

• Shaft. Steel, M5 thread, stands 17.5 mm above the bell; 4 mm through the bearings. (EMAX spec sheet, EMAX USA product page)
• Bell. 7075 aluminium. (EMAX USA product page)
• Magnets. N52UH neodymium magnets. (EMAX USA product page)
• Stator. The coils are wound on a stack of thin steel laminations: 28 × 14 mm (2814). (EMAX USA product page, EMAX spec sheet)
• Winding. AIW enamelled copper wire rated for 220 °C. (EMAX USA product page)
• Bearings. G1-grade high-speed bearings (EMAX gives no size). (EMAX USA product page)
• Base. 4 × M3 holes on a 19 mm circle (19 × 19 mm). (EMAX spec sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 830KV version reaches about these speeds; a prop loads the motor and brings it down, typically to around 70–75% of these figures at full throttle.

A 14-pole rotor has 7 pole pairs, so every turn of the shaft is 7 electrical cycles, and a six-step ESC switches the phases 42 times per turn.

About the 3D model

A generic outrunner drawn from EMAX’s published sizes: the 28 × 14 mm stator, 33.2 mm bell, 28.95 mm height, 5 mm shaft, 19 mm mounting circle and 12 teeth and 14 magnets. Anything EMAX doesn’t publish is typical for a motor this size, and the bell’s spoked top, the base and the inside are a generic design, not this motor’s. The colours are read off the maker’s product photos. There are no logos or markings: it is our drawing, not the maker’s.

Sources

1. EMAX USA: Pro Series 2814 Brushless Motor (product page, with its materials list and EMAX’s Pro Series infographics). Retrieved Oct 19, 2026.
2. EMAX: Pro Series 2814 Brushless Motor (product page on EMAX’s global store). Retrieved Oct 19, 2026.
3. EMAX: PRO-2814 spec sheet (dimension drawing and spec table for each KV; image on EMAX’s global product page). Retrieved Oct 19, 2026.
4. EMAX: PRO-2814 730KV thrust tables at 25.2 V, two 9-inch and three 10-inch three-blade props (image on EMAX’s global product page). Steps of rising thrust, then “Max” at full throttle; EMAX’s rpm column is left out because it has no figure at full throttle.. Retrieved Oct 19, 2026.
5. EMAX: PRO-2814 830KV thrust tables at 25.2 V, three 9-inch and two 10-inch three-blade props (image on EMAX’s global product page). Steps of rising thrust, then “Max” at full throttle; EMAX’s rpm column is left out because it has no figure at full throttle.. Retrieved Oct 19, 2026.