Mitsubishi HG-JR Low Inertia Servo Motor

The Mitsubishi HG-JR Low Inertia Servo Motor is the standard-inertia-class servo motor in Mitsubishi Electric's HG-JR series, designed to partner with the MR-J4 and MR-J5 servo amplifier families as the balanced general-purpose solution for the widest range of Saudi industrial automation applications. Covering output ratings from 0.05 kW to 7 kW with base speeds of 2000 rpm and 3000 rpm, the HG-JR43J (400 W, 3000 rpm, keyway shaft, straight connector) exemplifies the design philosophy: a compact, high-torque-density frame with a 22-bit absolute encoder (when used with MR-J5) or 23-bit multi-turn absolute encoder (when used with MR-J4), delivering smooth, quiet rotation with no cogging detectable through the machine structure. IP55 protection as standard — upgraded to IP67 with optional shaft seals — makes the HG-JR the direct choice for food processing, pharmaceutical, and wash-down machinery throughout Saudi Arabia.

The motor's cast aluminium housing is both the structural and thermal management element: the deep-fin geometry maximises heat transfer to ambient air, enabling 100% continuous rated torque at 40°C ambient (standard for CE-rated motors) and maintaining 90% continuous rating at 50°C ambient without a derating factor being applied — critical for Saudi Arabia where factory floor temperatures routinely approach and exceed 45°C during summer, even with air conditioning. The HG-JR series uses a low-loss, high-grade silicon steel lamination pack and optimised winding geometry to achieve motor efficiency of IE4 (Super Premium Efficiency) on 0.75 kW and above ratings, qualifying them for use in Saudi facilities targeting MODON Green Factory certification or Vision 2030 energy efficiency programme compliance. The keyway shaft option (suffix J in model number) provides a positive torque connection to belt pulleys, gears, and couplings without relying solely on the shaft clamp force, preferred by Saudi machine designers for high-duty-cycle applications where coupling micro-slip could cause positional error accumulation.

In the Saudi market, the HG-JR series motors are the most widely stocked Mitsubishi servo motors available from Razz Middle East, matching the demand pattern driven by MELSEC iQ-R and FX5U PLC-based machine builds across the Kingdom. Primary application domains include multi-axis packaging machinery (VFFS, HFFS, cartoning, case packing) installed in Saudi food and beverage factories producing for domestic consumption and GCC export; conveyor indexing and registration control on Saudi printing, labelling, and converting lines; and gantry positioning drives in Saudi warehousing and order-fulfilment automation systems for the growing e-commerce sector. The motor's natural compatibility with MR-J5-B SSCNETIII/H amplifiers allows seamless system design with iQ-R Motion CPU for the most demanding multi-axis applications, or with MR-J4-B amplifiers on existing installed base systems that are being expanded.

Razz Middle East maintains comprehensive stock of HG-JR series motors in the most popular frame sizes and shaft configurations in Riyadh, with expedited delivery to Jeddah, Dammam, Jubail, and Yanbu from next-day to same-week depending on the configuration. Motor-amplifier compatibility verification, inertia matching calculation, and thermal derating analysis at Saudi ambient conditions are standard engineering services provided at no charge with every quotation. Warranty registration, certificate of conformity, and traceability documentation are supplied with every motor. SAR pricing is issued within four working hours of RFQ.