HG-KR43J Mitsubishi 400W Servo Motor | MELSERVO J4 Low Inertia IP65

HG-KR43J | Mitsubishi 400W AC Servo Motor (MELSERVO J4 Series)

HG-KR43J is a low-inertia servo motor from Mitsubishi MELSERVO J4 series. It gives 400W output with 1.3 Nm rated torque. Great for robots and small machines. IP65 rated – dust tight and water resistant.

• Brand: Mitsubishi
• Model: HG-KR43J
• Series: MELSERVO J4 / HG Series
• Motor type: Low inertia, small capacity
• Rated output: 400W
• Rated torque: 1.3 Nm (max 4.5 Nm)
• Rated speed: 3000 rpm (max 6000 rpm)
• Rated current: 2.6A (max 9.1A)
• Protection class: IP65
• Cooling: Natural (fully enclosed)
• Oil seal: Yes
• Brake: No electromagnetic brake
• Reduction gear: None
• Shaft type: Standard
• Connector: 4-pin rectangular
• Max radial load: 245 N
• Weight: 1.33 kg (2.94 lbs)
• Temperature range: 0°C to 40°C

Mounting & Environment

• Flange mounting
• Natural cooling – no fan needed
• IP65: dust-tight and jet water resistant
• Oil seal protects against oil leaks

Expert Review

The HG-KR43J is perfect for fast, precise moves. Low inertia means quick start and stop. IP65 lets you use it in wet or dusty areas. Oil seal adds life in harsh spots. A smart choice for small robots and pick-and-place tools.

Manager’s Insight

This motor saves panel space. No external brake or gear needed for many jobs. It runs cool without a fan. Stock ready. We ship 12-24 hours via FedEx, UPS, or DHL. 12-month warranty on every unit.

Compatible Devices & Applications

• Small assembly robots
• Pick-and-place machines
• PCB drilling and routing
• Labeling and packaging tools
• Medical sample handlers
• 3D printers and small CNC

FAQ – Professional Questions

• Can I add a brake to HG-KR43J later?
  No. This model has no brake option. Choose HG-KR43JB if you need a brake.
• What is the max load inertia ratio?
  25 times or less. Keep load inertia low for best response.
• Does it work with MR-J4-20A drive?
  Yes. It pairs with any Mitsubishi J4 drive rated 400W or higher.
• Can I use it outdoors?
  No. Temperature range is 0-40°C. IP65 stops water jets but not full outdoor weather.
• What cable is needed?
  Use Mitsubishi MR-J3ENCBL series cables. 4-pin rectangular connector.

Selection Guide (Buying Advice)

• Choose HG-KR43J for 400W, low inertia, no brake needed.
• For higher torque (1.3 Nm to 4.5 Nm), this motor fits small loads.
• Add an MR-J4 drive to complete the system.
• Use in clean but humid or dusty areas – IP65 protects well.
• We ship 12-24 hours after order. Couriers: FedEx, UPS, DHL.
• All units include 12-month warranty.

Contact us for bulk orders or technical support:
Email: sales@powergearx.com
WhatsApp: +86 18030005825

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