How to Choose pin gauge set?

The Crucial Role of Accuracy in Fabrication

In the world of manufacturing, precision is paramount. Fabrication, the process of transforming raw materials into finished products, relies heavily on accurate measurements. The slightest deviation can significantly impact the quality and functionality of the final product. That's why the tools used in fabrication are typically designed for extreme precision. They can measure to incredibly fine levels of detail, ensuring that every component meets the exact specifications required.

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The Precision of Pin Gauge

Pin gauges are essential tools for inspecting the diameters of holes and grooves in fabrication. They ensure that finished products conform precisely to design specifications. Here are some specific applications of pin gauges in fabrication:

• Verifying hole sizes: Pin gauges are used to check if drilled or machined holes meet the specified dimensions.

• Inspecting shaft diameters: They can be used to verify the diameter of shafts, axles, or pins.

• Geometric features: Pin gauges are used to measure the width and depth of grooves, the outside and inside diameters of cylindrical components, and the dimensions of slots.

• Quality control: Pin gauges are a crucial part of quality control processes, ensuring that manufactured parts meet industry standards.

• Assembly: They can be used to check the fit of parts during assembly.

Factors to Consider When Choosing The Right Pin Gauge

Selecting the right pin gauge is crucial for ensuring accurate measurements and preventing damage to both the gauge and the workpiece. Here are some factors to consider when choosing a pin gauge.

1. Size Range

To achieve optimal measurement accuracy when verifying hole diameters, it is crucial to accurately determine the desired range of sizes. Once this range is established, select a pin gauge set that precisely encompasses all the required dimensions.

2. Tolerance Class

Some pin gauge sets are available in two tolerance standards: Class 0 and Class 1. Class 0 offers significantly tighter tolerances compared to Class 1. The high accuracy of Class 0 pin gauges is essential for applications that require extremely precise measurements, such as calibrating other measuring instruments.

The choice between Class 0 and Class 1 pin gauges depends on the specific requirements of the application. If you need extremely high accuracy and highly reliable measurement results, Class 0 is the right choice. However, if you need pin gauges for everyday use in a workshop, Class 1 is sufficient.

Product Examples:

Eisen Pin Gauge EP Series Set

Eisen Pin Gauge EP Series, pin gauge set in increments of 0.01 mm within range size 0.05 mm to 20 mm. The series offers two distinct sets: Class 0 and Class 1. Class 0 pin gauges boast exceptional accuracy with a tolerance of ± 0.5 μm, making them ideal for applications requiring micron-level precision. 

3. + or - Tolerance

Plus and minus pin gauges are used to determine whether the diameter of a hole falls within the specified tolerance. These precise measuring tools can be used as basic go/no-go gauges to determine the size of small features. 

Example:

A plus pin gauge is used as a "go" gauge to ensure the size does not exceed the upper limit, while a minus pin gauge is used as a "no-go" gauge to ensure the size is not below the lower limit. By using this method, you can be confident that no defective parts are accepted, although there is a small risk of rejecting a good part that is very close to the tolerance limit.

Product Examples:

Eisen Pin Gauge EM Series Set

The Eisen EM Series Pin Gauge Set is designed to accurately measure internal diameters starting from 0.100 mm. It offers both positive and negative tolerance options. Constructed from SKH51 and SUJ2 steel, the gauges cover a size range of 0.105 mm to 19.000 mm, with tolerance levels varying according to specific dimensions.

4. Pin Gauge Material 

The selection of pin gauge material is highly dependent on the specific requirements of each application. By considering the above factors, you can choose the right pin gauge material to ensure accuracy and durability in the fabrication process.

Generally, pin gauges are made from a variety of materials, including steel, carbide, ceramic, and hard metal alloys. However, carbide and ceramic pin gauges are highly recommended in industries due to their superior durability, corrosion resistance, and consistent performance, making them ideal for a wide range of applications.

For more information on ceramic and carbide pin gauges, please refer to the article A Deep Dive into Ceramic and Carbide Eisen Pin Gauges.

5. Storage and Care of Pin Gauges

For your fabrication requirements, select a pin gauge equipped with storage accessories such as storage box, plastic case, or pin vise (pin gauges holder). Proper storage and care are crucial for maintaining the longevity and accuracy of your pin gauge.

6. Manufacturer

Select pin gauges from reputable manufacturers renowned for quality and reliability. We highly recommend Eisen pin gauges for their exceptional precision, durability, and consistent performance, making them ideal for your fabrication needs.

Eisen Distributor in Singapore

LFC PTE LTD is the authorized distributor of Eisen Pin Gauges in Singapore. Our expert team can assist you in selecting the ideal pin gauge solution to meet your specific requirements.

Link to RTP GAUGE

Plug Gage Measuring - the art of using pre-sized precision metal plugs to determine the acceptability of diameters of drilled or machined holes.

The difference between any class of gage is not the wear or life span of the gage, it's the tolerance which is allowed in the manufacturing process of the gage.

GO/NOGO Measurement - A GO gage is used to check the lower limit of a hole.

A NOGO gage is used to check the upper limit of a hole.

If the GO gage enters the hole and the NOGO gage is unable to enter, the design specifications of the hole have been met.

Uses - for precision GO/NOGO measuring of hole sizes and depths, checking hole location and distance, and setting micrometers.

All gages are uniformly 2” long with ground ends, allowing you to use both ends for increased gage life. Gages are Carbon Chrome Alloy Steel (grade bearing quality steel) and heat treated to a 60-62 Rockwell C hardness.

All of our products come with a Certificate of Class Conformance, traceable to NIST (National Institute for Standards Technology).

The size and “+” (GO) or “-” (NOGO) are laser etched with a Meyer Exclusive Serial Number feature to ensure traceability on your shop floor on all gages that are .061” and larger.

Class ZZ Gages - These gages have an inch tolerance of .” and a metric tolerance of .005mm.

They are practical where good precision and speed are important.

Class Z Gages - These gages have an inch tolerance of .” and a metric tolerance of .mm.

They are one half the deviation of the ZZ for a better fit.

Class X Gages - These gages are available with an inch tolerance of .” and a metric tolerance of .001mm.

These gages are used where greater precision is needed.

Class XX Gages - These gages have an inch tolerance of .” and a metric tolerance of .mm.

They are one half of the deviation of the X.

Great for your most critical needs.

Length and Finish - All gages are 2 inches or 51mm long with ground ends for long life.

Steel - This is bearing quality, Carbon Chrome Alloy Steel, heat treated to 60-62 Rockwell C hardness and is considered the preferred material for the highest quality plug gages.

Certificate of Class Conformance - Assurance issued with each shipment of quality gages that conformance characteristics are traceable to NIST.

NIST - National Institute of Standards and Technology

Serial Number Etching - A feature that is exclusive to Meyer Gages and essential in assuring traceability on the shop floor on all gages over .060”.

Plus Gage Tolerance - plus the tolerance, minus 0.

Minus Gage Tolerance - minus the tolerance, plus 0.