Description
Core Product Summary
The Okuma ER-JG-7200D (Part Number: 1005-8014) is a rotary position and speed feedback encoder engineered for Okuma AC servo and spindle motors. Operating within the Okuma OSP numerical control environment, this sensor delivers precise real-time axis positioning and rotational velocity feedback to drive units, ensuring high-accuracy motion control across CNC lathes, machining centers, and automated machine tools.
Designed for direct mounting on the rear shaft of compatible Okuma BL-series motors, the unit converts shaft rotation into high-resolution serial feedback signals. Its rugged metal casing and industrial multi-pin connector interface protect sensitive internal tracking optics against electrical noise, thermal expansion, and mechanical vibration typical of production machining cells.
Key Technical Specifications
| Specification | Verified Value / Parameter |
| Brand / Manufacturer | Okuma |
| Product Family / Series | ER-JG Encoder Series |
| Model / Order Code | ER-JG-7200D |
| Part Number | 1005-8014 |
| Device Type | Absolute / Incremental Rotary Motor Encoder |
| Signal Output | Serial data communication to Okuma OSP drives |
| Mounting Type | Direct shaft / motor rear housing integration |
| Interface Type | Dedicated multi-pin feedback connector |
| Application Scope | Okuma AC servo motors, spindle drives, and CNC machine tools |
Detailed Product Overview
The Okuma ER-JG-7200D 1005-8014 functions as a closed-loop feedback sensor in Okuma CNC automation systems. By continuously sending high-resolution rotational data back to the OSP drive processor, the unit enables micro-inch axis positioning, smooth acceleration profiles, and precise spindle orientation required for complex tool paths.
Engineered to meet OEM equipment specifications, the encoder features internal signal conditioning to preserve feedback accuracy across high-rpm operating ranges. When replacing an existing unit during machine maintenance, technicians must ensure proper mechanical alignment with the motor shaft and verify clean connector seating to maintain signal integrity and avoid drive feedback fault codes.
Dimensions, Mounting & Connection Notes
- Motor Integration: Flange-mounted directly to the rear housing of the target Okuma motor with a center shaft coupling interface.
- Electrical Connection: Features a heavy-duty industrial connector for attachment to the machine tool’s encoder wiring harness.
- Handling Precautions: Standard electrostatic discharge (ESD) precautions and careful mechanical handling are required to prevent damage to internal optical code disks and bearings.
ER-JG-7200D 1005-8014
ER-JG-7200D 1005-8014
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Control System | Okuma OSP Numerical Control Platforms | Ensures native protocol handshake with drive amplifiers |
| Motor Compatibility | Okuma AC Servo and Spindle Motors (BL Series) | Match rear shaft pattern and pilot mounting face |
| Interconnect Cable | Okuma shielded encoder feedback cable | Protects serial data lines from high-frequency PWM drive interference |
| Mechanical Integration | Direct motor shaft coupling / flange mounting | Maintain recommended axial and radial runout tolerances during installation |
FAQ
What is the Okuma ER-JG-7200D 1005-8014?
The Okuma ER-JG-7200D (Part Number: 1005-8014) is a dedicated rotary motor encoder designed to provide position and speed feedback for Okuma CNC servo and spindle drives.
Which control systems use this encoder?
It is engineered specifically for Okuma CNC machine tools operating on Okuma OSP control architectures and matching drive units.
How does the unit connect to the motor and system?
It mounts mechanically to the rear shaft assembly of the motor and connects electronically via a dedicated shielded encoder cable harness.
What is the primary function of this part in a CNC machine?
It tracks the exact rotational angle and speed of the motor shaft, enabling the drive system to execute precise position control, contouring, and spindle indexing.
Documented Performance Data
| Metric | Value / Range | Operating Condition |
| Application Environment | Okuma CNC Machine Tools | Enclosed motor housing protection |
| Primary Signal Output | Serial feedback | High-speed drive communication loop |
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