Spindle Error Analyzer
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Spindle Error Analyzer: Tests Performed-
Rotating Sensitive Radial

Optional Tlusty method or B89.3.4 method of calculation/plotting.

Rotating Sensitive Radial acquires distance data from two probes positioned at 90° to each other. The probes measure the X and Y displacement of the axis of rotation to generate a polar plot using the Tlusty or B89.3.4 method. This test is valid for processes such as milling, boring, and drilling, where the tool is rotating in the spindle.
It measures changes in the position of the axis of rotation in two directions and evaluates the following aspects of machine tool performance:

Performance Parameter	Related Source Problems
Roundness capability due to synchronous spindle error motion	Out of round bearing races Out of round bearing seats Misaligned bearing seats
Surface finish capability due to asynchronous spindle error motion	Bearing wear Improper preload Structural vibration
Performance degradation at specific speeds	Inadequate stiffness Imbalance Resonant frequencies of machine

 

Data Collected	Calculated Values
X and Y (Two Probes)	TIR X, TIR Y Total Error Asynchronous Error Synchronous Error RPM

 

SEA 8 Manual
pdf (500K)

SEA Literature
pdf (95K)

Master Ball Targets Dimensions and Care
web page pdf (62k)

Using Capacitance Probes to Measure the Limit of Machine Contouring Performance
pdf (650k)

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