1.0 kW servo motor, IP67 sealed, MELSERVO-J4 series
The Mitsubishi Electric HG-SR102 is a rotary servo motor from the MELSERVO-J4 series, delivering 1.0 kW rated output at 200 V class with a rated torque of 4.8 N·m and a rated speed of 2000 r/min. The motor is built with an all-enclosed self-cooled construction rated IP67, meaning the housing seals against dust and temporary immersion — suitable for washdown or wet environments in food, beverage, or packaging lines.
Torque, speed, and load capacity
Rated torque is 4.8 N·m, with a maximum torque of 14.3 N·m available for acceleration and deceleration. The rated speed is 2000 r/min, and the maximum rotational speed reaches 3000 r/min. The moment of inertia is 11.6 × 10⁻⁴ kg·m², and the recommended load inertia moment ratio is 17 times or less — this sets the mechanical stiffness boundary for the coupled load; exceeding it risks resonance or instability in the servo loop. Rated current is 5.6 A, with a maximum current of 17 A for peak torque events. The power supply capacity is 1.7 kVA. The motor accepts a radial load of 980 N and a thrust load of 490 N on the shaft — these are the bearing load limits for direct-coupled or belt-driven applications.
Encoder feedback and drive compatibility
The HG-SR102 uses a 22-bit absolute position incremental shared encoder, providing 4,194,304 pulses per revolution. This resolution supports precise positioning and velocity control without a separate external encoder. The motor is compatible with multiple MR-J4 drive interfaces: the general-purpose interface (MR-J4-100A-RJ), SSCNET III/H interface (MR-J4-100B-RJ), CC-Link IE field network interface (MR-J4-100GF-RJ or MR-J4-100B-RJ010), and the 2-axis integrated SSCNET III/H interface (MR-J4W2-1010B). The motor is available without an oil seal as standard; a variant with an oil seal (HG-SR_J) is also offered for applications where oil mist or splash is present at the shaft exit.
Environmental and compliance notes
The motor is rated for operation at ambient temperatures from 0 °C to 40 °C, with storage from -15 °C to 70 °C. Ambient humidity must stay at 80% RH or less during operation (non-condensing) and 90% RH or less during storage. It is intended for indoor use without direct sunlight, corrosive gas, flammable gas, oil mist, or dust. Maximum elevation is 2000 m above sea level. The lifecycle stage is listed as current production. Compliance with international standards is noted per the manufacturer's standards compliance page — no specific UL, CE, or RoHS certificate numbers are recorded in this listing, but the motor is designed for global machine export.