Product Overview

The HG-KN43BJ-S100 AC Servo Motor represents a high-performance solution within the Mitsubishi MELSERVO-JN series, specifically engineered for precision motion control in automated manufacturing. This 400W low-inertia motor delivers exceptional dynamic response, making it ideal for high-speed indexing, material handling, and small-scale robotics. Unlike standard motors, this unit integrates an electromagnetic brake to prevent vertical axis drop during power loss and an industrial-grade oil seal to protect internal windings from lubricant ingress. With a rated speed of 3000 RPM and the ability to peak at 6000 RPM, the motor provides the high-frequency agility required for modern production cycles. The totally enclosed, natural cooling structure achieves an IP65 rating, ensuring reliable torque delivery even in environments prone to dust and moisture.

Technical Configuration

Model Code Breakdown

The HG-KN43BJ-S100 follows a precise technical nomenclature that defines its hardware capabilities:

• HG-KN: Identifies the low-inertia, high-performance AC servo motor series.

• 4: Denotes the rated output capacity of 0.4 kW (400 Watts).

• 3: Indicates the base rated speed of 3000 r/min.

• B: Signals the factory-installed electromagnetic brake for holding and safety functions.

• J: Specifies the inclusion of a specialized oil seal for enhanced protection.

• S100: Represents the specific shaft end or customized mounting specification within the sub-series.

Technical Specifications

Installation and Maintenance Guide

During installation, ensure the motor shaft alignment stays within the specified tolerance to prevent premature bearing wear or encoder vibration. Since this model features an oil seal (J-suffix), technicians must maintain a proper oil level at the gearbox interface; however, avoid complete immersion of the seal to prevent pressure-induced leakage.

When wiring the electromagnetic brake, use a dedicated 24V DC power supply independent of the motor's power lines to prevent electronic noise interference. For cable management, observe a minimum bending radius of at least 10 times the cable diameter to protect the internal high-resolution encoder leads. Regularly inspect the oil seal for signs of brittleness or thermal degradation, especially when operating near the 40°C ambient limit.

Engineering Advantages

High Dynamic Response

The low-inertia design of the HG-KN series allows for rapid acceleration and deceleration phases. This capability significantly reduces cycle times in pick-and-place applications compared to standard inertia motors.

Superior Environmental Protection

The combination of an IP65-rated enclosure and a dedicated oil seal makes the HG-KN43BJ-S100 resilient against oil mist and fine particulate matter. This engineering choice ensures long-term operational stability in CNC machining centers and textile machinery where contaminants are prevalent.

Safety-Integrated Braking

The "B" suffix signifies a fail-safe electromagnetic brake. This component provides critical safety for Z-axis (vertical) applications, instantly locking the load in position during emergency stops or power interruptions to protect both the equipment and the operator.

Delivery and Logistics

Delivery Time: 3-5 days when payment finish.

Shipping Partners: BY DHL / FEDEX / UPS.

Condition: Brand New, Original Factory Sealed.

Technical FAQs

Q1: Does the HG-KN43BJ-S100 require a specific servo amplifier?

A1: Yes, this motor is designed to pair with the Mitsubishi MELSERVO-JN series amplifiers (e.g., MR-JN-40A). Matching the motor with the correct amplifier ensures optimal tuning and protection of the internal encoder.

Q2: Can the electromagnetic brake be used for decelerating the load?

A2: No. The brake is a holding brake designed to keep the shaft stationary when power is off. Using it to stop a rotating load will cause rapid wear of the friction plates and eventual brake failure.

Q3: What is the benefit of the "J" oil seal in this specific motor?

A3: The oil seal prevents gear oil from the connected reduction gearbox from entering the motor housing. This is essential for motors mounted directly to oil-lubricated gearheads to prevent electrical shorts and encoder contamination.

Q4: Is it possible to operate this motor at altitudes higher than 2000m?

A4: Altitudes above 2000m result in thinner air and reduced cooling efficiency. Operation is possible but requires a derating of the output torque and current. Please consult our technical team for specific derating curves.