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Sunnen’s large-readout electronic indicators are available as an option on the company’s entire range of dial bore gages. The gages feature precision indicators with six-digit LCD readouts, 11-mm character height and three large buttons for ease of operation. Capable of checking bore sizes ranging from 0.054" to 12" (1.37 to 300 mm) and bore lengths ranging to 24"(600 mm), the gages enable users to set upper and lower tolerance limits for GO/±NG judgments. Standard analog-indicator-equipped gages read out in tenths (0.002 mm), and models with five-tenths (0.010 mm) readouts are also available. According to Sunnen, operators can easily toggle between inches and metric measurement readouts.
The electronic indicator dial bore gages, accurate to ±0.00012" (±0.003 mm) with 0.00005"- (0.001-mm) resolution, provide the ability to perform scaling calculations, judge tolerance, hold data and perform general comparison measurements. Internal calculations using a simple [F(x)=Ax)] formula are also possible.
The indicator face displays the spindle's absolute position via an absolute linear encoder capable of relocating the origin for multi-point measurement. The positive/negative count resulting from the spindle's up-and-down movement can be toggled, and the indicator face can be rotated 330 degrees.
Gage centralizers are adjustable over the entire diameter range, resulting in accurate centering action, even if the gage is tilted off the bore axis, the company says. A right-angle attachment is available for conditions in which the gage is difficult to read. Blind-hole probes and probe extensions are also available. Probe extensions measure 2.5" (63.5 mm) long, and as many three extensions can be assembled together.
Most models feature all-carbide gaging points for applications with extreme wear conditions. All dial bore gages are designed for the machining environment with a dust/water protection level of IP42 or IP53. Battery life under normal use is approximately 5,000 hours.
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