Sunnen GR-2245/2241 bore gauges provide measurement to 0.0001" for heavy-duty large-part machining. Standard models are capable of checking bore diameters from 2" (50.8 mm) to 12" (300 mm) and bore lengths up to 24" (600 mm) with appropriate attachments, while special order models can measure bores up to 65" (1,650 mm) long. GR-2245/2241 gauges are designed for energy industry components, such as flow meter tubes, liner hangers, drill pipe, mud pump liners and sucker rod pump barrels.
Available with analog dial readout or electronic indicators, the gauges feature long wearing, replaceable carbide gauging points to withstand extreme wear conditions with rough workpieces or abrasive materials. The gauges feature patented wear-proof ball cranks for long-term repeatability and retractable or non-retractable gauging points. Models with retractable gauging points are engineered to prevent scratching of the bore during removal. The gauges are designed with a dust/water protection level of IP42 or IP53, and a specially designed Shock-Shield protects the dial from hand heat and jarring to help ensure reliable readings.
"The gauges use adjustable centralizers to ensure proper positioning over the entire diameter range, resulting in accurate centering action, even if the gauge is tilted off the bore axis," said a company spokesperson. "A simple twist adjusts gauging tension, allowing the head to go smoothly in and out of any size bore." A right angle attachment is available for conditions where the gauge is difficult to read or total gauge height is an issue. Blind-hole probes allow measurements to within 0.5" (13 mm) of the bottom of the blind bore.
Standard dial-equipped gauges read out in tenths (0.0001"/0.002 mm), and models with five-tenths read outs (0.0005"/0.010 mm) are also available.
Gauges with electronic indicators are accurate to +/-0.00012" (+/-0.003 mm) with 0.00005" (0.001 mm) resolution, and provide the ability to perform scaling calculations, judge tolerance, hold data and perform general comparison measurements. Operators can easily toggle between inches and metric measurement read outs. A data output cable enables direct transfer of bore measurements to a computer, making the gauges beneficial for fast SPC data collection at multiple points in a bore during long production runs. Gauges can be preset with upper and lower tolerance limits for go/no go judgments, which are then displayed in full-size characters.
The electronic indicator displays the spindle's absolute position via an absolute linear encoder capable of relocating the origin, even after the power is turned off, for quick-start, 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°, for easy reading at virtually any angle. Battery life, under normal use, is approximately 5,000 hours.
All gauges come packed in sturdy, custom-fitted boxes with all tools and wrenches required for set-up and adjustment.
For more information contact:
Sunnen Products Company
7910 Manchester Road
St. Louis, MO 63143
800-325-3670 / 314-781-2100
sales@sunnen.com
www.sunnen.com/gages