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Mitsubishi Electric HG-SR301BJK HG-SR Series Rotary Servo Motor

Mitsubishi Electric HG-SR301BJK HG-SR Series Rotary Servo Motor

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  • Fabricante: Mitsubishi Electric

  • Nº do Produto: HG-SR301BJK

  • País de origem:Estados Unidos

  • Tipo de Produto: Rotary Servo Motors

  • Pagamento: T/T, Western Union

  • Peso: 30000g

  • Porto de embarque: Xiamen

  • Garantia: 12 meses

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Description

Executing high-performance industrial motion control requires high-accuracy equipment, and the Mitsubishi Electric HG-SR301BJK delivers this as a medium-inertia rotary servo motor optimized for the MELSERVO-J4 and MELSERVO-JE drive ecosystems. Engineered specifically with a 3.0 kW rated output and an integrated electromagnetic brake, this motor provides reliable holding torque and positional locking under heavy load states. This model features a specialized physical layout, including a keyway shaft and a built-in oil seal, allowing seamless integration into challenging mechanical setups where fluid or particulate contamination is a risk factor.

Features

  • Medium Inertia Rotor: Delivers high-capacity acceleration-to-deceleration ratios, ideal for high-duty cycle industrial mechanisms.
  • Electromagnetic Holding Brake: Built-in safety system designed to lock physical axis positions securely during power-loss or system shutdown.
  • Enhanced Environment Protection: Equipped with an integrated oil seal and a keyed shaft output for highly reliable torque transmission under hostile mechanical conditions.
  • High Resolution Encoder: Absolute encoder capability ensures precise positioning feedback back to the parent servo amplifier.

Applications

  • Material Handling Systems: Driving vertical lift axes and heavy-duty gantry transfer systems requiring fail-safe holding capabilities.
  • CNC Machining & Tooling: Powering auxiliary rotating tables and tool changers with demanding load characteristics.
  • Stamping and Packaging Machinery: Controlling high-speed, intermittent load profiles while maintaining rigid path accuracy.

Technical Specifications

Parameter Value
Manufacturer Mitsubishi Electric
Model Designation HG-SR301BJK
Product Series HG-SR Series
Rated Output Power 3.0 kW
Rated Speed 1000 r/min
Maximum Torque 85.9 Nm
Required Power Supply Capacity 4.8 kVA
Holding Brake Type Electromagnetic Holding Brake (Included)
Shaft Options Keyway (K) with Oil Seal (J)
Net Motor Weight 26 kg
Shipping Weight (Calculated) 30 kg

Wiring Connections & Interfaces

Terminal / Signal Line Required Wire Size (AWG / Metric) Function Description
U, V, W, Ground 3.5 mm2 (AWG 12) Main power lines and grounding protection for motor stator windings.
B1, B2 0.5 mm2 (AWG 20) Electromagnetic holding brake power feed lines.

Empirical Engineering Insights

Alternative Models & Compatibility

This unit directly replaces older generation HC-SFS series equivalent units, though physical dimensions and cabling pinouts differ. You must use MR-J4 series compatible cables to interface the encoder. It is ideally paired with the MR-J4-350A or MR-J4-350B servo amplifiers. Utilizing a drive rated lower than 3.5 kW will restrict performance and result in current-limit faults during peak acceleration phases.

Application Pitfalls & Engineering Notes

Due to the presence of the integrated oil seal, do not operate the motor shaft without lubricant present at the seal lip. Running the oil seal dry can cause friction-induced thermal degradation of the seal material, leading to premature ingress failure. In vertical installations, ensure the brake is not being utilized to decelerate dynamic loads; the holding brake must only activate once the rotor has reached zero speed to prevent irreversible mechanical wear on the internal friction pads.

Commissioning & Wiring Tips

When routing cables, ensure the motor encoder feedback cable is physically segregated from the primary U/V/W motor power cable. Maintain a minimum separation distance of 100 mm inside cable carriers to prevent electromagnetic interference from triggering encoder communication faults. Utilize a surge absorber (diode) across the B1-B2 control relay contact to prevent transient voltage spikes from damaging adjacent control-system outputs.

Installation Guidelines

CRITICAL WARNING:

Prior to starting mechanical or electrical installation, disconnect all incoming power supplies to the matching servo amplifier. Confirm that the charge LED on the servo amplifier has completely turned off. Wait at least 15 minutes to allow residual bus capacitor voltages to discharge below safe limits before servicing cable connections.

1

Mount the motor securely to a metallic machine frame configured to act as a heat sink. Ensure alignment with the load shaft to avoid excessive radial or axial force on the output shaft.

2

Verify that the keyway key is seated flat in the keyway slot before sliding the coupling assembly into place. Avoid hammering the shaft, as shock loads can crack the delicate internal encoder glass disk.

3

Route power cables (AWG 12) and brake cables (AWG 20) with strain relief to prevent pulling on the motor junction plugs.

4

Establish a solid low-impedance ground connection to the motor body to prevent electrostatic discharge through the shaft bearings.

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What is the primary function of the integrated electromagnetic brake?

The electromagnetic brake in the motor is designed to hold the axis in place when the servo system is powered down or in an emergency stop state. It prevents physical drift, specifically on vertical axes, but is not designed to be used for dynamic braking of moving loads.

Which specific Mitsubishi servo amplifiers are compatible with this motor?

This motor is designed to pair with the MELSERVO-J4 series, specifically matching the 3.5 kW rated amplifiers such as the MR-J4-350A, MR-J4-350B, or MR-J4-350GF.

Does this motor include a shaft keyway and oil seal?

Yes, the 'BJK' suffix indicates that this motor features an electromagnetic brake (B), an oil seal (J), and a standard keyway shaft configuration (K).

What are the recommended wire sizes for connecting this motor?

For main U, V, W power and grounding lines, use 3.5 mm2 (AWG 12) wire. For the B1 and B2 electromagnetic brake connections, use 0.5 mm2 (AWG 20) wire.

Envio Expresso Global

  • Entrega Padrão: 4-6 dias úteis via DHL, FedEx e UPS.
  • Despacho Expresso: Envio no mesmo dia para pedidos em estoque realizados antes das 14:00 (GMT+8).
  • Cobertura Mundial: Atendendo mais de 150 países, incluindo entrega rápida para Arábia Saudita e Emirados Árabes Unidos.

Devoluções e Garantia

  • Garantia de 30 Dias: Devoluções aceitas para produtos em estoque na embalagem original, lacrada de fábrica.
  • Garantia de 12 Meses: Cada componente industrial é coberto pela nossa garantia técnica profissional.

Os pedidos são processados e entregues de segunda a sexta-feira (exceto feriados).


Para elegibilidade completa, taxas de reabastecimento e detalhes de devolução internacional, por favor, consulte nosso oficial Política de Reembolso e Devolução .

TECHNICAL SPECIFICATIONS

Country of origin
Estados Unidos

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