Cara Membaca Dial Indikator

Summary

In this video, the host explains how to read a dial tester indicator, a crucial tool in automotive diagnostics. The video covers the basic functions of the tool, including its use in measuring brake disc wobble, axle shaft bending, and cylinder bore accuracy. Viewers learn how to interpret the large and small hands on the dial, which are calibrated for precise readings. The host demonstrates the process with practical examples, highlighting how easy it is to add the readings of the large and small hands to get the final measurement. Overall, the video offers a clear, step-by-step guide to using the dial tester indicator.

Takeaways

• 😀 The video explains how to read a dial indicator, a tool often used in automotive applications to measure variations in surfaces such as brake discs or shafts.
• 😀 A dial indicator consists of two needles: a large needle and a small needle. The large needle measures in millimeters, while the small needle measures smaller increments.
• 😀 To read the dial, you only need to perform simple addition of the values indicated by the two needles.
• 😀 The large needle moves in a clockwise direction, while the small needle moves counterclockwise.
• 😀 One full rotation of the large needle equals 1 mm of movement, with each small needle increment representing 0.01 mm.
• 😀 The value on the dial is calculated by adding the readings of the small and large needles together.
• 😀 The example demonstrated shows that if the large needle points to 0.35 mm and the small needle is at 0.05 mm, the total value is 0.40 mm.
• 😀 Another example demonstrates that if the large needle is at 0.60 mm and the small needle is between 3 and 4, the total value is 3.60 mm.
• 😀 The video includes a practical demonstration showing how to calculate readings by observing the movement of both needles.
• 😀 The method for reading a dial indicator is simple, requiring no complex formulas. It’s a straightforward process of adding the values from both needles.

Q & A

What is a Dial Tester Indicator, and what is its primary use in the automotive world?

A Dial Tester Indicator (also known as a Dial Test Indicator or Dial Gauge) is a measuring tool commonly used in the automotive world to measure precision. It is mainly used to check the runout of brake discs or the bending of shafts, and can also be used to measure cylinder bore roundness, taper, and concentricity.

How is the Dial Tester Indicator reading displayed?

The reading on the Dial Tester Indicator consists of two needles: a large needle and a small needle. The large needle measures in millimeters (mm), while the small needle measures in smaller increments. The value is derived by summing the readings from both needles.

How does the large needle behave when pressure is applied to the Dial Tester Indicator?

When pressure is applied to the Dial Tester Indicator, the large needle moves in the clockwise direction, while the small needle moves in the counterclockwise direction. This movement helps to indicate the measurement value.

What is the value of one full rotation of the large needle?

One full rotation of the large needle is equal to 1 mm. As the large needle completes a full revolution, the small needle moves one strip, indicating an additional increment of 0.01 mm.

How can you calculate the measurement using the Dial Tester Indicator?

To calculate the measurement, simply add the value of the small needle and the large needle. For example, if the small needle is at 3.00 mm and the large needle is at 0.10 mm, the total reading would be 3.10 mm.

Can you give an example of reading a measurement using the Dial Tester Indicator?

For example, if the large needle is at 0.35 mm and the small needle is between 5 and 6, the small needle would be valued at 0.05 mm, making the total reading 0.35 mm + 0.05 mm = 0.40 mm.

What happens when you rotate the Dial Tester Indicator?

When you rotate the Dial Tester Indicator, the needles move accordingly. The large needle moves one complete strip per full rotation, and the small needle moves incrementally, indicating smaller measurements.

What are the increments of the small needle on the Dial Tester Indicator?

The small needle on the Dial Tester Indicator moves in increments of 0.01 mm per strip, indicating fine measurements of precision.

How do you determine the total value of the measurement when both needles are in between numbers?

To determine the total value, sum the readings from both the small and large needles. For instance, if the large needle is at 0.60 mm and the small needle is at 0.05 mm, the total reading would be 0.60 mm + 0.05 mm = 0.65 mm.

What are some examples of how the Dial Tester Indicator is used in automotive maintenance?

In automotive maintenance, the Dial Tester Indicator can be used to check the runout of brake discs, the alignment of shafts, and the roundness of cylinder bores. It's a key tool for ensuring precision in critical automotive components.