MITSUBISHI HC703BS‑E51

Technical Specifications

Series: MELSERVO‑HC; Motor‑type: AC‑brushless‑servo‑motor; Built‑in high‑resolution‑absolute‑position‑encoder; E51 suffix denotes special‑encoder‑interface‑variant; BS suffix indicates‑shaft‑and‑mechanical‑interface‑configuration; Designed‑for‑matching‑MDS‑B‑V1/V2‑series‑amplifiers; Operating‑temperature‑range 0 °C ~ +40 °C; Protection‑grade IP44; Heavy‑duty‑flange‑mount‑structure; High‑rated‑torque‑output for‑machine‑tool‑feed‑axis‑heavy‑load‑condition.

Functional Features

High‑torque‑density‑output; Absolute‑encoder‑feedback eliminates‑power‑on‑homing‑requirement; Excellent‑dynamic‑response‑performance for‑large‑inertia‑load‑driving; High‑position‑and‑speed‑control‑precision; Heavy‑duty‑mechanical‑structure‑for‑machine‑tool‑harsh‑operating‑environment; Brushless‑long‑service‑life‑structure; Support‑position‑speed‑torque‑multi‑control‑modes with‑matched‑amplifier‑system.

Application Scenarios

Large‑CNC‑machine‑tool‑feed‑axis‑drives, heavy‑cutting‑machine‑tool‑axis‑motion‑control, large‑automated‑processing‑equipment, heavy‑duty‑automation‑production‑lines, special‑heavy‑load‑precision‑position‑machinery.

Performance Parameters

High‑continuous‑and‑peak‑torque‑output‑for‑heavy‑inertia‑load‑driving; High‑repetition‑position‑accuracy‑supported‑by‑absolute‑encoder‑feedback; Stable‑output‑under‑long‑time‑heavy‑cyclic‑duty‑operation; Adapt‑to‑vibration‑environment‑of‑machine‑tool‑workshop.

Material Composition

High‑strength‑aluminum‑alloy‑motor‑housing; High‑energy‑rare‑earth‑permanent‑magnet‑rotor; Laminated‑high‑quality‑silicon‑steel‑stator‑core; High‑strength‑alloy‑steel‑output‑shaft; Heavy‑duty‑sealed‑ball‑bearing‑group; High‑temperature‑resistant‑polyimide‑stator‑winding‑insulation; Reinforced‑metal‑connector‑assembly for‑power‑and‑encoder‑signal‑transmission.

Structural Characteristics

Large‑size‑heavy‑duty‑square‑mounting‑flange; Key‑way‑output‑shaft‑for‑high‑torque‑transmission; Rear‑end‑housing‑integrated‑absolute‑encoder‑unit; Rear‑side‑separated‑power‑connector‑and‑encoder‑signal‑connector‑interfaces; Double‑row‑bearing‑support‑for‑rotor‑shaft‑to‑bear‑heavy‑load; Sturdy‑closed‑housing‑mechanical‑structure.

Working Principle

Three‑phase‑brushless‑AC‑servo‑motor. Matched‑MDS‑series‑amplifier‑output‑variable‑frequency‑three‑phase‑AC‑to‑stator‑windings‑to‑generate‑rotating‑magnetic‑field‑driving‑permanent‑magnet‑rotor‑rotation. Built‑in‑absolute‑encoder‑continuously‑transmits‑rotor‑absolute‑angle‑position‑back‑to‑servo‑amplifier‑to‑realize‑high‑precision‑closed‑loop‑motion‑control without‑power‑on‑homing‑procedure.

Installation Requirements

Secure‑mount‑heavy‑duty‑flange‑onto‑rigid‑flat‑mechanical‑base‑surface; Use‑high‑strength‑fasteners‑for‑mounting‑bolts; Adopt‑high‑rigidity‑flexible‑coupling‑for‑shaft‑connection‑to‑bear‑heavy‑torque‑load; Separate‑high‑power‑cable‑and‑encoder‑signal‑cable‑wiring‑paths; Reliable‑protective‑earth‑ground‑connection‑for‑motor‑housing; Reserve‑adequate‑heat‑dissipation‑ventilation‑space; Strictly‑control‑shaft‑radial‑and‑axial‑load‑within‑motor‑specification‑limits; Prevent‑coolant‑and‑cutting‑fluid‑intrusion‑into‑motor‑housing‑for‑machine‑tool‑working‑environment.

Usage Notes

Must‑be‑driven‑by‑designated‑Mitsubishi‑MDS‑series‑servo‑amplifier‑unit; Strictly‑avoid‑exceed‑rated‑torque‑over‑load‑operation; Do‑not‑disassemble‑rear‑end‑absolute‑encoder‑assembly; Implement‑complete‑EMC‑shield‑for‑encoder‑signal‑cables; Protect‑motor‑against‑cutting‑fluid‑and‑oil‑mist‑erosion‑in‑machine‑tool‑site‑environment; Follow‑CNC‑system‑parameter‑setting‑procedures‑matching‑this‑motor‑model.