Bore Gage Measurement #1
The recovering economy has forced manufacturers to reduce their workforce and steamline their manufacturing processes. CMM's are not as quick as a bore gage and plug gages lack the accuracy needed! The bore gage (being a perfect mix of speed and accuracy) is the perfect solution for bore measurements.
At Gaging.com we offer many different types of bore gages: cylinder bore gages, pistol grip style, micrometer style, hole gages, the list goes on! So how do you choose the right gage?
I will blog about the Pistol Grip style Bowers XT Extreme Bore Gages first (accuracy +/- .00015" for most ranges). They are an excellent choice and are the most popular bore gage type sold at Gaging.com. They boast both speed and accuracy and can be used in a number of applications with different measuring heads.
- 3 point heads The standard head for this gage and are perfect for most applications. They have the ability to self-center which make measuring easy and they have the ability to measure a tri-lobed bore.
- 2 point heads Generally special order and excellent for measuring ovality / out-of-roundness. A depth stop is often recommended to help the centralizing process.
- Thread heads 3 point or 2 point but usually 3, available to measure various types of I.D. thread types including: UN, Metric, Acme, Whitworth, API, NPT, the list goes on. Always special order.
- Spherical heads 3 point or 2 point, excellent for deep bore applications. The anvils are machined on a radius so the head can be moderately tilted in the bore and provide repeatable measurements. Whenever depth extensions are used a spherical head is generally recommended.
- Groove heads/Ball Race 3 point or 2 point, the perfect solution for groove or ball race measuring. The anvils are cut so they are slightly smaller than the groove being measured for a perfect fit. Balls are often used as anvils on ball race heads.
- Taper heads 3 point or 2 point, usually with ball contacts. Taper heads are generally outfitted with an adjustable depth stop so two measurements at precise depths can be taken to calculate taper angle
- Slot heads 2 point, Self explanatory, can be used to many sizes of slots!
- Spline heads 3 point or 2 point. Similar to a thread head in nature but generally fitted with balls or pins to measure various types of I.D. splines
Gaging.com has specialized in custom bore gage applications for 10 years now (35 years combined industry experience between the two owners)! We are factory certified and we love to talk bore gaging, so please email or give us a call with your application! Keep an eye out for our next Bore Gage Measurement blog entry!
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