If you ever have the need for sourcing a certain replacement bearing, then often you may be wondering how you can measure your bearing.

Most engineers try to refer bearing size compare table (ตาราง เทียบ เบอร์ bearing, term in Thai) from the different manufacturer’s brochure. You may contact Nooseng Co., Ltd., who is representing SKF bearing in Thailand to know your bearing size.

In the event of a bearing failure, bearings are frequently measured, which means that an immediate needs to determine the bearing type and size so that a replacement may be purchased. This may result in errors, additional downtime, and expense increases. So, to select the right bearing following measurements are needed.

1. Identify your type of bearing

Determine the type of the bearing before measuring it because they all have various shapes and arrangements. Ball bearings, roller bearings, spherical bearings, and needle bearings are examples of common types.

2. Remove the bearing

You will need to remove the bearing carefully if it has already been put into a piece of equipment or an assembly. Utilize the proper equipment and removal methods to prevent injuring the bearing.

3. Clean the bearing

Before measuring, clean the bearing thoroughly to ensure accurate measurements. Remove any dirt, debris, or residual lubricant that might obscure the dimensions.

4. Measure the inner diameter

The inner diameter of a bearing is the distance across its centre. To determine the ID, use a digital calliper or micrometre. Take the measurement in millimetres (mm) by positioning the measuring tool’s jaws on the inner ring’s opposing sides.

5. Measure the width

The width of a bearing, sometimes referred to as its thickness or breadth, is the space between its two sides. Place the calliper’s jaws on opposite sides of the bearing to measure its width.

6. Measure the outer diameter

The bearing’s outer ring’s circumference measured across its centre is known as the outer diameter. Similar to how you measured the ID, measure the OD using a calliper or micrometre.

7. Identify the bearing code/reference number

Many bearings have standard code numbers printed on their sides, indicating their size and type. If you find a code or reference number, it can help you identify the bearing size and type without further measurements

8. Double-check measurements

To ensure accuracy, double-check your measurements and take multiple readings if needed. Bearings can have slight manufacturing variations, so obtaining consistent measurements is essential

9. Cross-reference with bearing catalogues

Once you have the measurements, refer to bearing catalogues or manufacturer’s websites to find the appropriate replacement bearing or the correct bearing for your specific application. Manufacturers often provide detailed specifications for their bearings, including dimensions and load capacities.

10. Note bearing tolerance and clearance

Some bearings come with specific tolerance or clearance values. Take note of these values, especially if the bearing requires specific preloading or fitting for your application

Remember that precision is essential when measuring bearings, as even small discrepancies can lead to incompatible replacements or improper functioning. If you are unsure about measuring the bearing or finding the right replacement, consult with bearing experts or contact the bearing manufacturer for guidance.