Tachogenerator DC Motor Spare Parts

PUTAI supplies ZYS-A permanent magnet DC tachogenerators for speed measurement in industrial DC drive systems. The range serves equipment OEMs, motor repair companies, maintenance teams, and spare parts distributors.

Speed Measurement: Generates a DC voltage signal related to rotational speed under specified operating conditions.

Permanent Magnet Design: Produces a speed signal without separate field excitation.

Bidirectional Operation: Designed to provide output during forward and reverse rotation.

Flange Mounting: Enables installation where the mounting flange, shaft, and coupling interfaces match the motor assembly.

Rolling Mills and Metal Processing
Mounted on DC drive motors for rolling mill auxiliary equipment, tachogenerators provide speed signals to the drive control system during changes in rolling load.

Paper Machines and Winding Lines
On DC-driven rewinders and unwinders, the tachogenerator monitors drive-motor speed to support controlled winding and unwinding of paper and other web materials.

Textile Machinery
For DC-driven spinning frames and winding machines, the unit supplies speed signals for spindle or winding-drive regulation.

Printing and Converting Equipment
Installed on suitable DC drive motors, tachogenerators provide roller-speed signals for printing, slitting, and converting processes that require coordinated material movement.

Machine Tools and Industrial Equipment
In machinery using tachogenerator-based DC drives, the unit supplies speed information to the existing control system. Selection depends on the drive's electrical requirements and the motor's mechanical interface.

DC Motor Repair and Maintenance
For failed or obsolete units, maintenance teams can use the existing model, nameplate, dimensions, and electrical data to identify a suitable replacement.

PUTAI supports three supply routes:

Standard Models: Match available ZYS-A models against required output voltage, current, rated speed, and load resistance.

Replacement Supply: Use the original model, nameplate photos, shaft details, mounting dimensions, and drive requirements to assess replacement compatibility.

Non-Standard Requirements: Review electrical specifications and mechanical drawings for potential customized configurations.

A replacement must match both the electrical output characteristics and the mechanical interface. Checking these details before ordering helps reduce installation changes and integration issues. Distributors can also use confirmed model references to support repeat orders.

For OEM integration or non-standard projects, PUTAI can review customer drawings, dimensional data, and drive-system requirements to clarify the technical scope. This review helps establish the applicable specifications and documentation requirements before an order proceeds.

PUTAI Electric Motor Equipment Co., Ltd. manufactures electric motors and related components.

Factory Area: More than 200,000 m²

Fixed Assets: RMB 80 million

Workforce: More than 120 employees, including 18 technical engineers

Industry Experience: More than 25 years

The company's broader motor manufacturing operations include winding, insulation processing, assembly, and testing, providing a manufacturing foundation for motor-related components and replacement projects.

Quality checks for a tachogenerator should focus on the approved specifications and interfaces:

Electrical Performance: Output voltage measured at the specified speed and load.

Mechanical Dimensions: Mounting flange, locating features, and shaft dimensions checked against the approved drawing.

Documentation: Inspection records and test results provided according to the agreed requirements for the order.

The inspection scope should be established for the specific model or project so that the delivered product can be checked against the applicable requirements.