High Capacity Automotive Roller Bearing 30321 30322 30324 For Excavtor

High Capacity Automotive Roller Bearing 30321 30322 30324 For Excavtor

Basic Info.

Main Product:

Seal Series:
arm cylinder seal kit, Boom cylinder seal kit, Bucket cylinder seal kit, main pump seal kit, travel motor seal kit,
swing motor seal kit, control valve seal kit, center joint seal kit, track adjust seal kit, bushings,
floating seals, o-ring box, pusher, etc.

Engine parts:
cylinder heads, cylinder blocks, crankshafts, camshafts, connecting rods, water pumps, turbo chargers,
engine assys, fan blades, main bearing and connecting rod bearings, pistons, piston rings, liner kits, etc.

Hydraulic parts:
hydraulic cylinder assembly, gear pump assembly, hydraulic pump assembly, travel motor assembly, final drive assembly, swing motor assembly,
main valve assembly, service valves, gasket kits, etc.

Electric Parts:
solenoid valves, water sensors, pressure sensors, throttle motors, stop solenoid, controllers, monitors, etc.

Other Parts:
seal kits, bushings, floating seals, o-ring box, pushers, couplings, engine cushions, bearings, gears, fuel filter
oil filter, air filter, track link assy, front idler, carrier roller, hydraulic oil cooler, water tank, track link assy, etc.

FAQ:

Q: What is a machine bearing?
A: Bearings are "parts that assist objects' rotation". They support the shaft that rotates inside the machinery. Machines that use bearings include automobiles, airplanes, electric generators and so on

Q:Is bearing steel standard?
A:According to the heat treatment and application, the standard divides bearing steels into five categories: fully quenched bearing steels, surface quenched bearing steels, induction quenched bearing steels, stainless bearing steels and high-temperature bearing steels.

Q: What are the main bearing materials?
A: A typical tri-metal performance bearing consists of a steel backing, a substrate usually made of bronze (copper/lead), and the overlay, which can be made of several metals. The two basic types of overlays used in performance engine bearings are copper, tin, lead, or lead indium.

Q:What is bearing specification?
A: A bearing number is composed of a basic number and a supplementary code, denoting bearing specifications including bearing type, boundary dimensions, running accuracy, and internal clearance.

About Bearing:

Apered roller bearings are separable and have thefollowing components: outer ring, inner ring, androller assembly (containing the rollers and a cage).The non-separable inner ring and roller assembly iscalled the cone, and the outer ring is called the cup.nternal clearance is established during mounting bythe axial position of the cone relative to the cup.
Taper roller bearings belong to detachable bearingsand are divided into single, double and four-rowtaper roller bearings according to the number ofrolling body columns. Widely used in automobiles.rolling Mills, mines, metallurgy, plastic machineryand other industries

Product Show:

Your Trusted Excavator Parts Supplier – Manufacturer & One-Stop Sourcing Solution

Looking for a reliable supplier of excavator parts? Whether you need OEM services or a complete range of parts, we provide the best solutions for your business. As both a manufacturer and trading company, we combine factory-direct prices with the convenience of one-stop sourcing, ensuring that you get high-quality parts at competitive prices.

At YNF Machinery, we specialize in excavator rubber parts and a wide range of excavator components. Our extensive experience and commitment to quality make us a trusted partner for distributors, wholesalers, and repair shops worldwide.

Why Choose YNF Machinery?

We are not just another supplier—we are your long-term partner for excavator parts. Here’s why businesses worldwide choose us:

✅ Largest Excavator Rubber Parts Factory in Southern China

Our factory is the biggest excavator rubber parts manufacturer in southern China. This means:
✔ Lower production costs, allowing you to increase your profit margins
✔ Reliable and stable supply, ensuring you get the parts you need, when you need them
✔ Consistent quality control, reducing the risk of defective products

✅ Thousands of Products & Multiple Quality Levels

We offer a comprehensive range of excavator parts, covering various brands and models.
✔ Choose from thousands of product lines
✔ Select from different quality levels to suit your market demands
✔ Always find the right part, reducing time spent searching for suppliers

✅ Expanding Global Network – 16+ Agents in China & Growing

We have over 16 agents across China and are actively expanding our global presence.
✔ Looking for distributors and agents worldwide—let’s grow together!
✔ Support with marketing, logistics, and product knowledge
✔ Long-term partnership opportunities with exclusive benefits

✅ 30+ Years of Industry Expertise

With decades of experience, we understand the excavator parts market inside out.
✔ Established reputation for reliability and professionalism
✔ Knowledgeable team to help you find the right parts quickly
✔ Expertise in OEM manufacturing, making custom parts to your specifications

✅ OEM Services & Customization

Looking to develop your own brand or need custom parts? We’ve got you covered!
✔ Our own factory can manufacture parts based on your designs and specifications
✔ We provide custom branding options to help you build your business
✔ From rubber parts to metal components, we can customize everything you need

✅ Office & Showroom in Guangzhou – Convenient Logistics

Our Guangzhou office and showroom allow for easy business meetings and fast shipping.
✔ View and inspect products before ordering
✔ Quick access to major ports for efficient global shipping
✔ Dedicated customer support team to assist with orders and inquiries

What Excavator Parts Do We Offer?

We cover all major excavator brands, including Caterpillar, Komatsu, Hitachi, Volvo, Kobelco, Doosan, Hyundai, JCB, Kubota, and more. Our product range is designed to keep your machines running efficiently and reduce downtime.