3-Phase Gear Motor 3kW 4Hp

The 3-Phase Gear Motor 3kW 4Hp is a high-capacity gear motor that integrates a 3-phase electric motor and an inline gearbox. With its ability to work stably in harsh environments, this 3-phase gear motor is an ideal choice for mechanical systems, production lines, continuous factory operations, automation lines, and industrial projects.

Design Overview of the 3-Phase Gear Motor 3kW 4Hp

The 3-Phase Gear Motor 3kW 4Hp features an integrated monoblock design combining the electric motor and gearbox, coated with anti-rust electrostatic paint to protect the equipment from dust and moisture. The motor housing is made of sturdy aluminum or cast iron, paired with an aluminum nameplate displaying clear specifications.

3-Phase Electric Motor 3kW 4Hp:

• Function: This is the central component responsible for converting electrical energy from the 3-phase power grid into mechanical energy, generating high-speed rotation at the rotor shaft.
• Design: The outer casing is typically cast as a single piece from heavy-duty cast iron or aluminum alloy, equipped with vertical cooling fins along the body for rapid heat dissipation. The terminal box is designed to be waterproof and dustproof. Inside, it uses 100% pure copper wire to optimize the magnetic field, ensuring the motor runs coolly without power loss.

Gearbox:

• Function: Responsible for receiving high rotational speed from the electric motor, then utilizing the gear system to reduce output speed (RPM) and maximize torque (pulling force) for heavy-duty loads.
• Design: Features an extremely thick cast-iron protective casing capable of withstanding strong impacts in industrial environments.

Detailed Internal Structure of the 4 Hp 3-Phase Motor

The 3-Phase Gear Motor 3kW 4Hp belongs to the gear motor segment ranging from 1.1kW to 3.7kW and is composed of the following 2 main parts:

• Stator: Consists of laminated electrical steel cores wound with 100% copper wire for stable magnetic generation and high efficiency.
• Rotor: Perfectly dynamically balanced to reduce vibration and increase the lifespan of the entire transmission equipment.
• Gear system: Consists of spur or helical gear stages meshing together. All gears are made of load-bearing alloy steel, heat-treated to standard hardness to withstand high friction.
• Bearings and oil seals: Industrial bearing system capable of withstanding heavy radial loads to ensure smooth shaft rotation. Heat-resistant oil seals at both ends prevent external impurities from entering and maintain gear oil at a stable level.

Classification of the 3-Phase Gear Motor 3kW 4Hp

According to mounting styles, the 3-phase gear motor 3kW 4Hp is classified into the following 2 types:

3-Phase Gear Motor 3kW 4Hp Foot Mount (GH)

Specifications:

	Shaft 1	Shaft 2
Shaft diameter	40mm	50mm
Keyway	10mm	14mm
Voltage	3-phase 220/380V	3-phase 220/380V
Length	493mm	546mm
Gear ratio	1/3, 1/80, 1/100, 1/150 … 1/200	1/3, 1/80, 1/100, 1/150 … 1/200
Output speed	483 RPM ⇒ 7 RPM	483 RPM ⇒ 7 RPM

Applications:

• Applied in packaging lines, flour mixers, shrimp pond aerators, and agricultural product pressing/processing systems.
• Driving heavy-duty conveyor systems and material transport belts in logistics and mining plants.
• Providing pulling force for stone crushers, rolling mills, and scrap metal presses in heavy industry.
• Integrated into winch systems and construction material lifting cranes at construction sites.
• Assembled for industrial-scale animal feed mixers and concrete mixers.

3-Phase Gear Motor 3kW 4Hp Flange Mount (GV)

Specifications:

	Shaft 1	Shaft 2
Shaft diameter	40mm	50mm
Keyway	10mm	14mm
Voltage	3-phase 220/380V	3-phase 220/380V
Dimensions	496mm	546mm
Gear ratio	1/3, 1/80, 1/100, 1/150 … 1/200	1/3, 1/80, 1/100, 1/150 … 1/200
Output speed	483 RPM ⇒ 7 RPM	483 RPM ⇒ 7 RPM

Applications:

• Top-mounted installation for chemical mixing tanks, paint mixers, or food solution agitators.
• Providing traction for industrial water pumps and agitators in wastewater treatment systems.
• Integrated into sludge scraping systems and bubble aeration paddles at industrial wastewater treatment plants.
• Operating water paddlewheel systems and large-capacity oxygen aerators in aquaculture.
• Used for vertical conveyor systems, packaging machines, or tower-type automatic filling machines.

Instructions for Wiring a 3-Phase Gear Motor

Precise electrical wiring is a prerequisite for safe motor operation, avoiding short circuits, burnouts, or voltage drops. Below are the basic steps for wiring this 3kW 3-phase motor series.

• Step 1: Open the terminal box cover. Use a screwdriver to remove the protective screws to open the terminal box (electrical box) located on the body of the gear motor.
• Step 2: Connect the power supply wires. Take the 3 wires of the 3-phase power supply and connect them sequentially to the 3 terminal posts marked: U1, V1, and W1. Extremely important note: Absolutely DO NOT connect power wires to terminals U1, V2, W2 (or incorrect lower terminal rows). Incorrect placement will lead to an incorrect voltage surge (up to 660V), causing immediate short-circuiting, burning, and damage to the motor.
• Step 3: Power on and operate. Check the contact points again to ensure safety and firmness. Proceed to supply 3-phase power to the motor to begin operation.

The 3-Phase Gear Motor 3kW 4Hp is the optimal solution combining powerful performance, energy-saving capabilities, and low maintenance costs. To explore more options and catch up with the latest equipment trends, please browse our compilation video of industrial machinery series, or watch the gear motor video for the most visual overview of each motor line at Thanh Thai Motor.

Warranty, Shipping, and Commitment Policies at Thanh Thai Motor

When purchasing gearmotors at Thanh Thai Motor, you will receive benefits such as:

Warranty up to 24 Months

All gearmotor products at Thanh Thai Motor come with an official 24-month warranty. We are committed to clear after-sales service, with quick and transparent processing procedures – ensuring customer peace of mind during use.

Nationwide Delivery

No matter which province or city you are in, Thanh Thai Motor is always ready to support fast delivery, ensuring on-time delivery, careful packaging, and safe transportation. We supply a full range of 220V gearmotors, variable speed motors, etc., for the diverse needs of customers nationwide.

Products Meet European Quality Standards with German Technology

Our products are manufactured using modern German technology, meeting European standards. Models such as integrated gearmotors, variable speed motors, or 220V gearmotors all ensure stable operation and superior durability.

Competitive Pricing, Good Discounts for Dealers and Bulk Purchasers

We offer affordable gearmotors, suitable for projects with limited budgets. In addition, Thanh Thai Motor has special policies and offers for dealers and bulk purchasers.

Quality Commitment

All 220V gearmotors here are wound with pure copper wire. This ensures powerful, smooth operation and energy savings.

Full Certification Documents: CO, CQ,...

All products such as integrated gearmotors, conveyor motors, or speed reducers come with full Certificates of Origin (CO) and Quality (CQ), meeting stringent technical requirements in industry.

Contact Us

Need advice on choosing the right gearmotor for your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com