Bore Gauges

A bore gauge, also referred to as a dial bore gauge, is a precision tool designed to measure the internal diameters of holes, bores, or cylindrical objects with high accuracy. At RS Philippines, we stock a wide range of high-quality bore measuring tools suitable for various applications, from automotive repair to industrial manufacturing.

What Is a Bore Gauge?

A bore gauge is a precision measuring instrument used to determine the internal diameter of holes, cylinders, or bores. Typically constructed from hardened steel for durability, bore gauges feature a dial indicator or digital display for reading measurements, a measuring head with probes or anvils, and a centering mechanism. This mechanism, which is sometimes spring-loaded, helps to ensure accurate diameter measurement.

A bore gauge measures hole diameter by extending internal anvils that contact the hole's walls. This measurement is then indicated on either a dial or a digital display.

Used by engineers, machinists and mechanics to accurately determine the internal diameters of holes, cylinders and pipes in the automotive, aerospace and manufacturing industries, bore measuring tools are essential for upholding quality assurance and safety.

How Do Bore Gauges Work?

  • Setting the Gauge: Before use, the bore gauge is set to a specific nominal size using a master ring gauge or an external micrometer, to establish a zero reference point.
  • Insertion: The user inserts the gauge into the bore. The two or three measuring anvils expand to make contact with the bore's inner walls.
  • Measurement: The attached bore gauge dial indicator or digital display measures any deviation from the nominal size, revealing if the bore is too large or too small.
  • Interpretation: The final reading indicates the bore's dimensional accuracy. This helps determine if the bore meets the required quality and specifications.

Types of Bore Gauges

  • Dial Bore Gauges: These hole measuring tools use a mechanical dial indicator to display measurements, providing a clear and precise reading of bore dimensions.
  • Digital Bore Gauges: With an electronic display, these bore gauges offer high-resolution measurements and are easy to read, reducing the chance of human error.
  • Electronic Bore Gauges: Known for their advanced data output and Statistical Process Control (SPC) capabilities, which enable seamless integration with computer systems.
  • Bore Gauge Sets: These convenient sets come with a variety of interchangeable anvils and extensions to accommodate a wide range of bore diameters.

How to Choose the Right Bore Gauge

Other than dial bore gauge prices, there are a host of factors to consider before you settle on a bore gauge:

  • Bore Size Range: Make sure the gauge's measurement range is suitable for all the bore diameters you need to inspect. Enlist the help of bore gauge sets to expand measurement ranges.
  • Accuracy Requirements: Choose a gauge that provides the level of precision and resolution needed for your specific quality control and inspection tasks.
  • Type of Measurement: Select between a dial, digital, or electronic bore gauge based on your preference for ease of reading, data collection, and display features.
  • Material Compatibility: Your bore gauge's anvils should be made of a durable material that will not damage the workpiece you are measuring.
  • Budget: Bore gauge prices can vary depending on your requirements. Balance the cost of the bore gauge with its features and overall quality to ensure it meets your financial and operational needs.

Applications of Bore Gauges

  • Automotive Industry: Hole measuring tools are critical for measuring the internal diameter of engine cylinders to ensure precise fit during assembly or reconditioning.
  • Aerospace Manufacturing: Dial or electronic bore gauges are used to achieve the high-precision dimensions required for critical aircraft components, where safety and reliability are paramount.
  • Quality Control: Dial and digital bore gauges verify that manufactured parts, like bearings and gears, conform to strict specifications, ensuring product quality and functionality.
  • Maintenance: Bore gauges help technicians assess wear and tear in machinery components by measuring the size of bores to determine if parts need to be replaced.

Why Buy Bore Gauges from RS Philippines

At RS Philippines, we carry a wide selection of high-quality bore gauges from industry leaders such as RS PRO, Moore & Wright and Starrett. From drill hole gauges to bore gauge sets, our hole measuring tools are suitable for diverse applications and are available at great prices. We also stock testing and measurement peripherals like signal generators and digital multimeter parts. For more delivery details, please visit our Delivery page.

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