Cylindrical Roller Bearing 3B-8921 For Caterpillar Motor Grader Spare Parts

Caterpillar Motor Grader Bearing 3B-8921

• Separable cylindrical roller bearing with inner race and rollers, allows axial compensation for thermal expansion.
• Made of bearing steel with heat treatment and precision grinding.
• Available in P0, P6, P5 precision grades for different assembly needs.
• Even force distribution, shock resistant for harsh grader working conditions.
• Direct OEM replacement for part 3B-8921, easy to disassemble and repair.

• High radial load capacity to withstand heavy impact of motor graders.
• Great wear and fatigue resistance, longer service life on construction sites.
• Low rolling friction improves transmission efficiency and reduces heat.
• Flexible precision options balance cost and performance.
• Plug-and-play fit for multiple Caterpillar grader models, save maintenance time.
• Stable operation avoids abnormal noise and blockage, cut down repair expenses.

Production Process:

Product Photos

Low rolling friction improves transmission efficiency and reduces heat generation inside the gearbox.

Excellent anti-fatigue performance extends service life in harsh construction environments.

Constructed with high-purity bearing steel, it is impact-resistant and fatigue-resistant for heavy bumpy working conditions.

Reluted Produts

Factory processing and inventory

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We support export and accept customization. Global customers are welcome!

Bearing inspection

We place great emphasis on quality control and have established a comprehensive quality inspection system. From raw material warehousing to delivery, every purchase and every bearing undergoes rigorous inspection and testing to ensure that we provide our customers with stable, reliable, and standard-compliant products.

Participating in the 2024 Shanghai bauma Exhibition

At ZHZB, we operate with a comprehensive quality control system at its core. From raw material inspection upon arrival to final product delivery,
every sensor undergoes 100% inspection and accuracy verification, strictly adhering to ISO 9001 and other international standards.
This ensures that we provide reliable bearing components for high-end equipment in industries such as mining, road construction, and wind power.

Delivery：

1.We will send express delivery for less than 45 kg, which is more convenient door-to-door

2.45-200 kg we will choose air transportation, the safest, fastest, and the most expensive

3.For more than 200 kg, we will send it by sea to reduce transportation costs

Why choose us? 

FAQ

Q1: I want to buy your products, how can I pay?

A: You can contact me through Whatsapp to send bank account to you.

Q2: If we don't find what we want on your website, what should we do?

A: You can email or Whatsapp us the descriptions and pictures of the products you need, we will check whether we have them. We develop new items every month. and some of them have not been uploaded to website in time. Or you can send us sample by express, we will develop this item for bulk purchasing.

Q4: What’s the advantage of separable inner race and roller design?

A: It allows axial displacement to offset thermal expansion. Inner race or rollers can be replaced separately to save repair cost.

Q5: Can it directly replace original Caterpillar spare parts?

A: Yes, fully interchangeable with OEM 3B-8921, direct installation without any modification.

Q6: What working conditions is this bearing suitable for?

A: High load capacity and shock resistance, ideal for heavy-duty, vibrating and dusty construction site environment of motor graders.

Q7: How to extend the bearing service life?

A: Apply proper lubricating grease regularly, avoid overloading and inspect running clearance periodically to prevent uneven wear.

Warranty

1. Warranty period:A 3-month warranty period is provided for the product from the date of arrival. After the customer arrives, the items should be checked against the order list. Contact us and provide any possible data on the item in question.

2. You need to pay the replacement costs in the following situations:

* Wrong orders from customers.

* Any force majeure causes damage.

* Wrong installation.

* Overtime and overload work on parts.

* Lost due to any circumstances.

* Human factors are destroyed.

* Rust and corrosion during storage and operation.

* The warranty has expired.

3. Other

This kind of product is easy to rust, please pack it and store it properly.