OEM-Quality Komatsu Bulldozer Parts        
       For D31A-20 & D37A-5        
       Ear Trunnion Ball: 120-Y46-3161

A Global Solution for All Your Heavy Machinery Needs - September 3, 2025

FACTORY-DIRECT SALES! Your Source Manufacturer.
       CUSTOMIZABLE MANUFACTURING FOR ALL YOUR PARTS.
       Specializing in International Export & Professional Custom Development.

Welcome to Shandong Jufengyuan, your premier partner for all heavy equipment spare parts. We specialize in providing a vast inventory of high-quality components, including the essential Komatsu D31A-20 and D37A-5 bulldozer parts. Our featured product is the robust Ear Trunnion Ball, part number 120-Y46-3161, a critical component for your machine's stable operation. As a leading China heavy machinery parts exporter, we ensure you receive top-tier, OEM-quality Komatsu parts and a wide range of components for other major brands.

At Shandong Jufengyuan, our comprehensive catalog covers an extensive variety of construction machine replacement components. We are a direct source for Sandvik Parts, Atlas Copco Parts, Epiroc Parts, Cummins Parts, Deutz Parts, Caterpillar Parts, Montabert Parts, Furukawa Parts, and more. Our expertise extends to providing aftermarket parts for Komatsu dozers, as well as components for Hitachi Parts, Volvo Parts, Liebherr Parts, Hyundai Parts, Metso Parts, Sany Parts, and XCMG Parts. Whether you need a Komatsu bulldozer undercarriage part or a hydraulic cylinder seal kit, we have you covered.

Key Construction Machinery Parts Explained

1. Drill Bit (钻头, Буровое долото): The cutting tool at the end of the drill string, used to bore holes.
       Example: Sandvik Ranger DX800 Drill Bit (钻头) - Sandvik Ranger DX800 буровое долото

2. Piston (活塞, Поршень): A component that moves back and forth within a cylinder, converting force from one form to another.
       Example: Epiroc Boomer L2C Drifter Piston (活塞) - Epiroc Boomer L2C поршень

3. Rotary Head (回转头, Вращающаяся головка): The part of a drilling rig that rotates the drill string, transmitting torque to the drill bit.
       Example: Sandvik Pantera DP1500i Rotary Head (回转头) - Sandvik Pantera DP1500i вращающаяся головка

4. Feed Cylinder (推进油缸, Цилиндр подачи): A hydraulic cylinder that provides the forward force to push the drill string into the rock.
       Example: Atlas Copco PowerROC T35 Feed Cylinder (推进油缸) - Atlas Copco PowerROC T35 цилиндр подачи

5. Chain Sprocket (链轮, Цепное колесо): A toothed wheel that engages with the track chain on an undercarriage, driving the machine forward.
       Example: Komatsu D375A-6 Chain Sprocket (链轮) - Komatsu D375A-6 цепное колесо

6. Track Roller (支重轮, Опорный каток): A wheel that supports the weight of the machine and guides the track chain.
       Example: Caterpillar D6T Track Roller (支重轮) - Caterpillar D6T опорный каток

7. Boom Cylinder (动臂油缸, Цилиндр стрелы): A hydraulic cylinder used to raise and lower the boom on an excavator or other equipment.
       Example: Sany SY215C Boom Cylinder (动臂油缸) - Sany SY215C цилиндр стрелы

8. Engine Filter (发动机滤清器, Двигательный фильтр): A component that cleans air, oil, or fuel before it enters the engine.
       Example: Cummins QSK19 Engine Filter (发动机滤清器) - Cummins QSK19 двигательный фильтр

9. Idler (引导轮, Направляющее колесо): A wheel that guides and maintains tension on the track chain.
       Example: Hitachi ZX210LC-5G Idler (引导轮) - Hitachi ZX210LC-5G направляющее колесо

10. Seal Kit (密封件套件, Комплект уплотнений): A set of seals used to prevent leaks in hydraulic cylinders or pumps.
       Example: Volvo EC220D Seal Kit (密封件套件) - Volvo EC220D комплект уплотнений

As a trusted mining equipment wear parts supplier and genuine Komatsu parts alternative source, we understand the importance of reliability and durability. Our commitment to quality ensures that every component, from Komatsu bulldozer parts to excavator engine parts, meets strict standards. We are your one-stop shop for a comprehensive range of hydraulic system components, final drive parts, and more. Our professional team is ready to assist with all your needs, from product selection to custom parts manufacturing and export logistics.

About Shandong Jufengyuan

Shandong Jufengyuan is a leading China construction machinery parts exporter, dedicated to serving clients globally with top-quality, reliable, and cost-effective solutions. We are a source manufacturer, providing OEM quality Komatsu parts and a vast inventory of components for brands like Sandvik, Atlas Copco, Epiroc, Caterpillar, and Sany. Our mission is to provide an efficient and dependable supply chain for all your heavy equipment repair parts.