Mitsubishi Electric AC Servo Motor HC-KFS43 400W 3000r/min

Low-Inertia Servo Motor for Fast and Accurate Motion

The Mitsubishi Electric HC-KFS43 is a small-capacity, low-inertia AC servo motor from the MELSERVO family. It delivers quick acceleration and stable positioning for compact machines, and is commonly used as a direct replacement in existing MR-J2S servo systems. The motor combines a compact flange design with a high-resolution encoder, helping maintain repeatable accuracy in automated production equipment.

Key Features

• 400 W Output: Rated output of 400 W with 1.3 N·m rated torque and high peak torque for dynamic moves.
• Low Inertia: Low rotor inertia supports rapid acceleration and short positioning cycles.
• High-Resolution Encoder: 17-bit absolute encoder (131072 pulses/rev) for precise feedback.
• System Compatibility: Matched with MELSERVO MR-J2S-40A / MR-J2S-40B servo amplifiers.
• Compact Flange: Small 60 mm flange size suits space-limited axes and retrofit installations.

Technical Specifications

Typical Applications

The HC-KFS43 is used in semiconductor and electronics assembly, pick-and-place units, packaging machines, labeling equipment, small robots, feeders and indexing tables that need fast and accurate positioning.

Quality Inspection and Packaging

Every HC-KFS43 unit is checked for part number, appearance and condition before dispatch, then packed with protective material to prevent damage during transport. Please confirm the model, version and quantity when sending an inquiry so the correct part can be prepared for your equipment.