HR 30218J Bearing for Excavator and Heavy Machinery Repair

HR30218J Tapered Roller Bearing for Excavator and Machinery Repair

The HR30218J tapered roller bearing is supplied for excavator, heavy equipment and machinery repair applications that require a 90 mm inner diameter, 160 mm outside diameter and 32.5 mm total width bearing. It is commonly searched as HR30218J, HR 30218J, 30218J bearing, tapered roller bearing or single row taper roller bearing.

This page focuses on HR30218J as the main bearing number. HR 30218J is the spaced writing format, and 30218J can be used as a reference search term. Final selection should be confirmed by the old bearing number, inner diameter, outside diameter, width, cone and cup condition, mounting position and working application before ordering.

Bearing Type and Size Reference

HR30218J is a tapered roller bearing. Tapered roller bearings are commonly used where radial load and axial load need to be supported together. The key size reference for this bearing is 90 mm ID × 160 mm OD × 32.5 mm width.

Because bearing replacement depends heavily on size and working position, the bearing number alone should not be the only confirmation point. Buyers should compare the removed bearing with the replacement bearing before installation.

If the old bearing is worn, broken, overheated or difficult to identify, please provide photos of the bearing marking, cone, cup, shaft position, housing position and related machine information before quotation.

Part Number and Reference Notes

HR30218J is the main part number of this product page. It should stay visible in the SEO Title, H1, top parameters, first paragraph, product body and image ALT text.

HR 30218J is the spaced writing format of HR30218J. 30218J is a common reference search format. These formats can be kept on the page to help buyers find the product by different search habits.

Do not mix nearby bearing numbers such as 22318B, 22220B, 22316B, 22224B or BA-series bearings into this product page. Those are different bearing pages and should not dilute the HR30218J page signal.

How to Confirm the Correct Bearing

Bearings can look similar in product photos, but small differences in inner diameter, outside diameter, width, cone angle, cup structure and clearance may affect installation and service life. Please compare the removed bearing before ordering.

• Confirm whether the old bearing number is HR30218J, HR 30218J or 30218J.

• Measure the inner diameter, outside diameter and total width of the old bearing.

• Check whether the required size is 90 mm ID × 160 mm OD × 32.5 mm width.

• Compare the cone and cup structure before installation.

• Confirm the working position, shaft fit and housing fit.

• Send photos of the old bearing marking, bearing side, shaft position and housing position before quotation if you are not sure.

Common Bearing Failure Symptoms

A tapered roller bearing may need replacement when there is abnormal noise, excessive vibration, overheating, rough rotation, metal particles, visible wear, cracked raceway, damaged rollers or increased clearance during machine operation.

Before replacing the bearing, check the shaft, housing, seal condition, lubrication, mounting preload and contamination level. Bearing failure may be caused by poor lubrication, incorrect fitting, overload, misalignment or dirt entering the bearing area.

If the old bearing failed because of contamination, incorrect installation, poor lubrication or damaged shaft and housing surfaces, the root cause should be corrected before installing the replacement bearing. Otherwise, the new bearing may fail again.

Installation and Handling Notes

Before installation, keep the bearing clean and avoid direct impact on the rollers or raceway. Check the shaft and housing size, surface condition and alignment before pressing the bearing into position.

Use proper bearing tools and follow the repair procedure for preload, clearance and lubrication. Do not install the bearing if the cone, cup or rolling surface is damaged during handling.

After installation, rotate the assembly and check for abnormal noise, excessive tightness or uneven movement. If the bearing area becomes hot quickly after operation, stop the machine and recheck preload, lubrication and installation condition.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this HR30218J / HR 30218J tapered roller bearing is suitable for replacement work where the old bearing number and size match the required 90 mm × 160 mm × 32.5 mm specification.

For parts distributors, it can be supplied as a 30218J bearing reference for excavator and heavy machinery repair demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old bearing number, size confirmation and application photos before quotation.

FAQ

What is the main product on this page?

This page is for the HR30218J / HR 30218J tapered roller bearing used for excavator and heavy machinery repair.

Is HR 30218J the same search format as HR30218J?

Yes. HR 30218J is the spaced writing format of HR30218J. Buyers may search either format, so both formats can be kept on the page.

What are the main dimensions of HR30218J?

The main size reference is 90 mm inner diameter, 160 mm outside diameter and 32.5 mm total width.

Can I confirm this bearing by part number only?

The part number is important, but size and installation position should also be checked. Please confirm the old bearing number, inner diameter, outside diameter, width, cone and cup structure before ordering.

What should I send before ordering?

Please send photos of the old bearing marking, cone, cup, shaft position, housing position and measured dimensions. These photos help confirm whether HR30218J is the correct replacement bearing.