Bore Gauge

Bore gauge is an excellent tool to measure the inside diameter of a bore or hole, it is one of the most popular and widely used bores measuring tools in the field of mechanical manufacturing and equipment maintenance to ensure the accuracy of component assembly.

A dial bore gauge consists of dial indicator, screw, grip, joint, main device, anvil locking nut, anvil, washer, guide device, a movable measuring head, a fixed measuring head (measuring rod), interchangeable extension rods.

The dial indicator attached to a set of arms that expand to touch the walls of the bore. As you insert the gauge into the cylinder and expand the arms, the dial indicator provides a reading that reflects the bore’s diameter. This tool is vital for checking for wear, ensuring proper clearances, and verifying that the cylinder is round and straight. A good dial bore gauge can save you from costly mistakes that could arise from improper measurements.

Here is how to assemble the dial bore gauge:

1. Attaching the indicator

•    Inserting the indicator's spindle into the joint
•    The hand of indicator turns about 1 revolution
•    Locking the indicator with the screw

2. Selecting the anvils combination anvil or washers

•    Removing the anvil locking  nut and the anvils or washers not use.
•    Install the correct anvils(s) or washers or combination anvil.
•    Slect the minimum number of anvils or washers.
•    Install the knurled locking nut tightly.

Here are two types of bore gauges we supply: 

• Dial Bore Gauge   - With dial indicators are inserted into holes and openings to take direct measurements of bore diameters. The dial indicator is mounted to the gauge handle and the user rocks the gauge in the bore or hole to find the minimum reading on the dial.
  
• Digital Bore Gauge-They have a digital display in the form of an integrated LCD or removable and exchangeable digital indicator that provides quick and easy reading of inside-diameter measurements of holes and openings. Available with 0.01mm or 0.001mm resolution, suitable for fast reading and high precision measurement requirement.

The measuring range of bore gauge is achieved by changing or adjusting the length of the interchangeable probe. Therefore, bore gauge comes with a set of interchangeable probes. Bore gauge measuring range is available from a minimum of 6mm diameter to a maximum of 450mm diameter for metric and from a minimum of 0.24in diameter to a maximun of 6in diameter for inch, here we show the standard technical parameters as below: 

Besides these standard measuring ranges, also available with customized measuring range based on special requrement.