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Metrology

Sunnen Lease Program Puts Mechanical Bore Gage, Precise In-Line ID Measurement in Your Shop

PG-Series bore gages require no electricity, air, or special expertise to check honing, grinding, boring, reaming, drilling, screw machine operations

Published: Monday, November 15, 2021 - 12:00

(Sunnen: St. Louis) -- Sunnen’s PG-700/800 Series bore gages are ideal for fast, simple, economical process control in lean manufacturing environments, combining accuracy with a shop-hardened, all-mechanical design. And Sunnen’s Gage Leasing Program allows shops of all sizes and production runs to have precision in-line measurement for parts that are honed, ground, bored, reamed, or drilled.

The lease program includes maintenance and provides replacement gages, if needed. The popular PG-400 and PG-500 setting fixtures can also be leased to complement the PG gages. The lease renews each year and if the gage is no longer needed at the shop, it is simply returned to Sunnen. If a gage needs to be repaired during the lease, it is quickly swapped out for another unit. This is an easy, economical way for job shops to get in-line precision part inspection, increasing shop capabilities, and opening new avenues of business.

The PG-Series gages bring reliable ID gaging to the manufacturing floor with no need for electrical or air connections, making them immune to fluctuations in line voltage or air pressure. A single PG gage can measure a wide range of part diameters, offering greater versatility at a lower cost than dedicated devices, such as air gages.

Compact and easily portable, the gages can be mounted right at machining stations. Unique gage setting fixtures enable simple 2-minute set up, while eliminating the need and expense for plug gages, jo blocks, master rings, or micrometers. The PG bore gage removes complexity, skill, and “feel” from the measurement process, allowing machine operators to precisely confirm part size with a visually intuitive analog scale. The speedometer-type scale provides quick readouts for 100-percent inspection of machining operations or fast sampling of large vendor lots. Units are available with two different scales to fit the application: 0.005 in. range with 0.00005 in. increments or 0.010 in. range with 0.0001 increments. Various models are available for gaging IDs from 0.090 in. to 2.900 in. Metric models cover IDs from 2.3 mm–74.3 mm.

PG-Series bore gages can be used to examine the entire bore for diameter, taper, barrel, bell mouth, out-of-round, and lobing. A sliding faceplate with adjustable stops permits end-to-end examination of bores. Stops can be set to allow examination of a particular section of the bore, with accuracy right up to the edge of ports, lands, and ends.

Created by Sunnen Products, a leader in precision honing, bore sizing, and finishing, PG-Series bore gages use proven all-mechanical design to “lock in” accuracy, performance, and reliability. An exclusive system of floating reeds locks gage fingers at the desired diameter size against drift or lag. Accuracy is not affected by temperature, moisture, air pressure, or vibration. The floating reed system eliminates friction and wear to maintain original repeatability and linearity, no matter the gage’s age or amount of use.

Additional information on PG-Series bore gages and the Gage Leasing Program are available from Sunnen Products Company.

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