EZRUN 4278SD G2R Sensored Motor for 1/8 Truck, 2250KV, 3-6S LiPo, 42x78mm, MAX8 G2S ESC Compatible

Overview

The EZRUN 4278SD G2R Motor is a sensored motor designed to match the EzRun MAX8 G2S ESC. When paired, the ESC can identify the matching motor to form a sensored power system for improved control feel, and to enable motor overheat protection.

Key Features

• Perfect match for EzRun MAX8 G2S ESC; the ESC can identify the matching motor and provide the best performance.
• Sensored design for linear, smooth response; powerful and linear output in sensored mode.
• Rotor uses four high-strength, high-temperature-resistant sintered Nd-Fe-B magnets with widened magnetic tiles for strong torque and stable output.
• Independent magnetic ring helps the Hall sensor output a pure rotor position signal and avoid sensor signal interference for stable sensor-mode operation.
• High output efficiency helps reduce temperature and deliver more power under the same load.
• Construction highlights: CNC-machined aluminum housing, high-purity copper windings, advanced rotor structure, 0.2mm silicon steel laminations, stainless steel output shaft, high-precision bearings.
• Innovative sensor interface and rubber-covered bearings for improved waterproofing and dustproofing versus traditional sensored motors.
• Supports higher RPM: maximum speed up to 60,000 RPM; 9% increase compared to the G2 motor; rotor durability further enhanced.
• Materials callouts: high-hardness aluminum alloy CNC shell, high-quality bearings, ultra-thin silicon steel sheets, high-temperature-resistant oxygen-free copper wires, high-toughness alloy output shafts.

Specifications

Mechanical drawing notes (as labeled)

• Dia. of cooling fins: R42
• 40.8
• 78 +- 0.3
• 18.5 +- 0.5
• 5
• 4.5 Cut
• 14.5
• Dia. 25.40
• 4-M3, 4-M4; 22.5 degrees
• 3-6.5 GBC
• Rotation marking: C.C.W

What’s Included

• (1) Ezrun MAX 4278 SD Motor (2250kv)
• (1) Manual

Applications

• 1/8 Truck
• Monster Truck

Customer service: support@rcdrone.top

Manuals

• Manual (included)

Details

EZRUN 4278SD G2R is rated at 2250KV for 3–6S LiPo setups, with a 42mm x 78mm can and a 5mm shaft.

The EZRUN 4278SD G2R sensored motor uses a 5mm shaft, 4-M3/4-M4 mounting holes, and three bullet leads for straightforward installation.

The EZRUN 4278SD G2R sensored motor is designed as a matching option for the EzRun MAX8 G2S ESC.

The EZRUN 4278SD G2R sensored design is intended to deliver a linear, smooth throttle response when paired with a matching ESC.

The EZRUN 4278SD G2R sensored motor is rated for speeds up to 60,000 RPM and comes with lead wires and bullet connectors for straightforward wiring.

The EZRUN 4278SD G2R sensored motor uses a CNC shell with quality bearings, copper windings, and a sturdy output shaft for durability.