Precision spindle machining for tasks that require precise machining

Mechanical processing has significant advantages over other processing technologies in terms of workpiece complexity, material diversity, energy consumption, and cost. As a key basic component, the existing machine tool processing spindle cannot guarantee ultra-high-speed, high rotation accuracy, and compact structure at the same time.

The precision spindle can be said to be a very critical part of any machine tool. High-precision machining parts, you can use processing equipment equipped with a precision spindle. The precision spindle is a spindle that effectively combines ultra-high rotation accuracy with ultra-high vibration resistance, high static stiffness, and almost unlimited life.

Precision spindle machining improves machine productivity

The precision spindle improves machine productivity and manufacturing efficiency and provides a complete system method for rotary motion. The precision spindle is uniquely designed to perform any machining function, from removing materials such as metal and plastic to positioning and rotating. Precision spindle machining is provided by belt drive, integral (built-in) electric, or direct drive. Can provide customized materials and coatings, as well as a large number of accessories.


A precision spindle is one of several types of machining spindles. Precision spindles are used in machinery and factories that require precise completion of production line processing tasks and require very precise machining. Precision spindles are known for improving the accuracy, speed, productivity, and manufacturing quality of processing equipment. Precision spindles are very effective, not only for extremely high-precision applications but also for standard requirements that significantly increase productivity. Its high stiffness and high shock resistance allow for higher forces generated by machine tool processing without chatter.

For equipment that uses precision spindle processing, the surface roughness of the workpiece can be said to be very small. The main influence on the surface roughness is due to the asynchronous error movement of the precision spindle of the machine tool. Using precision spindle machining can obtain parts with extremely high surface quality because of their precision, repeatability, smooth and vibration-free rotation. For hardened steel parts, a surface roughness better than 8nm Ra can be achieved in a relatively short time (depending on the size of the processed part).

A step-by-step process for precision spindle motor repair

Repairing precision spindles requires a keen eye and suitable tools to complete the job. Even minor errors in the maintenance of precision spindles can cause the failure to recur. Precision spindles are common in advanced machinery such as CNC milling machines. Like all machine parts, precision spindles wear out over time.

Precision spindle repair step-by-step process: disassemble and clean all parts, use electronic measuring tools to measure all key areas, taper rework, taper grinding, tie rod repair, clamp chuck repair or replacement, bearing seat rework, bearing seat hole rework, hard chrome And grinding, gasket grinding, motor repair, stator rewinding, the balance of all rotating parts, lubrication of new bearings, reassembly, running-in, vibration check, temperature check, runout check, and final balance.


One of the important things when rebuilding the spindle with dynamic rotation balance is to balance the spindle correctly. An unbalanced or improperly balanced spindle will vibrate and wear bearings and other components prematurely. Spindle imbalance can cause damage to internal spindle components, poor finishes, premature tool wear, and overheating problems. The spindle with multiple failures needs high-quality parts, close tolerance measuring equipment, suitable balance equipment, knowledge of dynamic rotation balance, in-depth understanding of bearing fit and installation configuration, precision machining, precision grinding, and electrical knowledge.

The article mainly introduces the relevant knowledge and content of precision spindle machining. You can learn from the article that the use of precision spindle machining can obtain parts with extremely high surface quality because of their precision, repeatability, smooth and vibration-free rotation. For hardened steel parts, a surface roughness better than 8nm Ra can be achieved in a relatively short time (depending on the size of the processed part).