Product Overview
When your production line demands rapid acceleration and precise positioning, the Mitsubishi HG-MR13 Ultra-Low Inertia Servo Motor delivers. As a maintenance engineer, you need components that perform reliably under high-speed cycles. This motor, part of the HG Series, is engineered for small capacity applications where quick response and consistent torque matter.
Technical Specifications Breakdown
Let's examine the key parameters that define the HG-MR13's capabilities:
- Rated Speed & Maximum Speed: With a rated speed of 3000 RPM and a maximum speed of 6000 RPM, this motor supports fast indexing and short cycle times. The wide speed range allows flexibility in various motion profiles.
- Torque Performance: Rated torque is 0.32 Nm, while maximum torque reaches 0.95 Nm. This peak torque helps overcome inertia during acceleration without oversizing the motor.
- Encoder Feedback: A 22-bit encoder provides high-resolution position feedback, enabling precise control even at high speeds. This reduces positioning errors and improves overall machine accuracy.
- Environmental Protection: The totally-enclosed structure with IP65 rating protects against dust and water jets, making the motor suitable for washdown environments or areas with particulate contamination.
- Load Capacities: Maximum radial load of 88 N and axial load of 59 N ensure the motor can handle typical belt, pulley, or direct coupling loads without premature bearing wear.
Industry Applications
The HG-MR13 excels in applications requiring rapid start-stop cycles and precise positioning. Common use cases include:
- Pick-and-Place Machines: The ultra-low inertia rotor allows quick acceleration and deceleration, reducing cycle times in electronic assembly or packaging lines.
- Labeling and Printing Equipment: High-speed indexing with accurate encoder feedback ensures consistent label placement or print registration.
- Small Robot Arms: The compact size and high torque-to-inertia ratio make it suitable for lightweight robotic joints in collaborative or desktop automation.
Installation & Setup Guidance
When installing the HG-MR13, follow these practical tips:
- Mounting: Use the straight shaft with a flexible coupling to avoid radial misalignment. Ensure the mounting surface is flat and rigid to prevent vibration.
- Cabling: Route motor power and encoder cables separately from high-voltage lines to reduce electrical noise. Secure cables with strain relief near the motor.
- Brake Consideration: This model does not include an electromagnetic brake. For vertical loads or applications requiring holding torque at power-off, add an external brake or use a servo drive with holding function.
- Cooling: The totally-enclosed structure relies on natural convection. Ensure adequate airflow around the motor; avoid enclosing it in tight, unventilated spaces.
Maintenance & Reliability
From a maintenance perspective, the HG-MR13 offers several reliability advantages:
- Sealed Bearings: The IP65-rated enclosure keeps contaminants out, extending bearing life. No routine lubrication is required.
- Encoder Durability: The 22-bit encoder is optical or magnetic (depending on variant) and is sealed within the housing. Avoid impact to the rear cover.
- Inspection Intervals: Periodically check for unusual noise or vibration. Monitor current draw; if it consistently exceeds rated current (0.9 A) during normal operation, investigate mechanical binding or load changes.
- Environmental Factors: Keep ambient temperature within the motor's specified range (not provided in data; refer to manual). Avoid condensation by maintaining consistent operating temperature.
Selection Guide & Purchasing Advice
Before ordering the HG-MR13, verify these points:
- Shaft Configuration: Confirm straight shaft fits your coupling. No keyway is specified; use a clamping-type coupling.
- Brake Requirement: Since this model has no brake, ensure your application does not require holding torque when power is removed. If needed, order a version with brake or add an external unit.
- Drive Compatibility: The motor works with Mitsubishi servo drives that support 22-bit encoders. Check drive firmware version for compatibility.
- Availability: SpareTechPLC stocks the HG-MR13. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
Q: Can the HG-MR13 achieve 6000 RPM continuously?
A: The maximum speed is 6000 RPM, but continuous operation should be within the rated speed of 3000 RPM to avoid overheating and ensure long life.
Q: What is the torque at rated speed?
A: Rated torque is 0.32 Nm at 3000 RPM. Maximum torque of 0.95 Nm is available for short-duration acceleration.
Q: Does this motor include a keyway on the shaft?
A: No. The shaft type is straight shaft, so use a clamping-type coupling rather than a keyed connection.
Q: What is the weight of the HG-MR13?
A: The motor weighs 0.56 lbs (0.26 kg), making it lightweight for small robotic or indexing applications.
Q: Is the HG-MR13 suitable for washdown environments?
A: Yes, the IP65 rating provides protection against dust and water jets, though verify chemical compatibility if using aggressive cleaning agents.
Additional Information
The Mitsubishi HG-MR13 is a small capacity, ultra-low inertia servo motor from the HG Series. It features a totally-enclosed IP65 structure, 22-bit encoder, straight shaft, and no electromagnetic brake. Rated speed is 3000 RPM with a maximum of 6000 RPM. Rated torque is 0.32 Nm, maximum torque 0.95 Nm. Rated current 0.9 A, maximum current 2.5 A. Maximum radial load 88 N, axial load 59 N. Weight 0.56 lbs (0.26 kg).
