Premium KOMATSU Trunnion Ball - Part Number 14Y-71-13211
Guangxi Huayang Engineering Machinery Equipment Co., Ltd. (www.guangxihuayang.com) is your trusted source for high-quality aftermarket and genuine parts for a wide range of construction machinery, including KOMATSU, Caterpillar (CAT), and more. We specialize in providing durable and reliable components to keep your heavy equipment operating at peak performance.

Product Spotlight: KOMATSU Trunnion Ball 14Y-71-13211
Introducing the high-precision KOMATSU Trunnion Ball with the part number 14Y-71-13211. This critical component plays a vital role in the smooth and efficient operation of your KOMATSU machinery. Manufactured to exacting standards, this trunnion ball ensures optimal performance and longevity, reducing downtime and maximizing productivity for your construction projects.
Applications and Compatible KOMATSU Models
The KOMATSU Trunnion Ball 14Y-71-13211 is primarily used in the hydraulic cylinders of various KOMATSU excavators and bulldozers. Its function is to provide a low-friction pivot point, allowing for smooth and controlled movement of the cylinder rod. This is essential for tasks such as digging, lifting, and pushing in a variety of construction, mining, and earthmoving applications.
This specific trunnion ball 14Y-71-13211 is known to be compatible with the following KOMATSU models (this list may not be exhaustive, please verify with your machine's parts manual):
KOMATSU PC200 series excavators (e.g., PC200-7, PC200-8)
KOMATSU PC210 series excavators (e.g., PC210-7, PC210-8)
KOMATSU PC220 series excavators (e.g., PC220-7, PC220-8)
KOMATSU D65 series bulldozers (e.g., D65EX-15, D65PX-15)
KOMATSU D85 series bulldozers (e.g., D85EX-15, D85PX-15)
Application Scenarios and Case Studies
Consider a road construction project where a KOMATSU PC220 excavator is being used to dig trenches for laying pipes. The smooth and precise operation of the excavator's boom and arm, facilitated by high-quality trunnion balls like 14Y-71-13211, ensures efficient excavation and reduces cycle times. Similarly, on a mining site, a KOMATSU D85 bulldozer equipped with this trunnion ball in its blade cylinders can effectively push and move large volumes of earth and ore, contributing to overall productivity.
Guangxi Huayang has supplied numerous trunnion balls 14Y-71-13211 to various construction and mining companies, helping them maintain the reliability and performance of their KOMATSU equipment. Our commitment to quality ensures that these parts withstand the demanding conditions of heavy-duty operations.
Guangxi Huayang: Your Partner for KOMATSU and CAT Parts
As Guangxi Huayang Engineering Machinery Equipment Co., Ltd., we pride ourselves on being a leading provider of a comprehensive range of parts for KOMATSU and Caterpillar (CAT) construction machinery. Our extensive inventory includes:
Undercarriage Parts (Four Wheels and One Belt): Track Rollers, Carrier Rollers, Sprockets, Idlers, Track Chains
Hydraulic System Parts: Hydraulic Pumps, Hydraulic Motors, Control Valves, Hydraulic Cylinders (e.g., Bucket Cylinders, Boom Cylinders)
Transmission and Power Components: Transmissions, Gears, Engine Assemblies (including Cummins Engine Parts)
Wear Parts: Bucket Teeth, Track Links, Pins and Bushings, High-Strength Bolts
We are committed to providing our customers with genuine and high-quality aftermarket parts at competitive prices. Our experienced team is always ready to assist you in finding the right parts for your specific machinery needs.
Frequently Asked Questions (FAQ)
Q1: What are the signs of a worn trunnion ball?
A1: Signs of a worn trunnion ball can include excessive play or looseness in the hydraulic cylinder joint, unusual noises during operation (such as clicking or knocking), and jerky or inconsistent cylinder movement. Visual inspection may reveal wear, deformation, or damage to the ball's surface.
Q2: How often should trunnion balls be inspected and replaced?
A2: Trunnion balls should be inspected regularly as part of your machine's routine maintenance schedule, typically every 250 to 500 operating hours. The replacement frequency depends on the severity of the operating conditions and the quality of the part. Replace them immediately if any signs of significant wear or damage are detected.
Q3: Can a worn trunnion ball cause damage to other components?
A3: Yes, a worn or damaged trunnion ball can lead to increased stress on other components of the hydraulic cylinder and the connected linkages. This can result in premature wear and failure of parts like the cylinder rod, bushings, and even the hydraulic pump due to increased strain.
Troubleshooting and Maintenance Tips for Trunnion Balls
Regular Inspection: Periodically inspect trunnion balls for any signs of wear, cracks, or deformation.
Proper Lubrication: Ensure that the pivot points around the trunnion ball are properly lubricated to minimize friction and wear.
Tightness Check: Regularly check the tightness of the bolts and fasteners associated with the trunnion ball to prevent loosening.
Prompt Replacement: If any signs of wear or damage are detected, replace the trunnion ball immediately with a high-quality replacement like our KOMATSU 14Y-71-13211.
KOMATSU and Caterpillar (CAT) Parts Glossary
KOMATSU PC300-8 Swing Motor: The hydraulic motor responsible for rotating the upper structure (house) of the excavator.
Caterpillar CAT 320D Final Drive: The gearbox and motor assembly that transmits power to the tracks, enabling the excavator to move.
KOMATSU D155AX-8 Ripper Cylinder: The hydraulic cylinder that controls the movement of the ripper tooth at the rear of the bulldozer.
Caterpillar CAT 777G Fuel Injector: A precision component that delivers fuel into the engine's combustion chamber.
KOMATSU WA470-8 Wheel Loader Bucket Cylinder: The hydraulic cylinder that controls the tilting and dumping of the loader bucket.
Caterpillar CAT 336D Hydraulic Pump: The main pump in the hydraulic system that generates the flow and pressure required for various machine functions.
KOMATSU PC450-8 Main Control Valve: The valve that directs hydraulic fluid to different actuators (cylinders, motors) based on operator input.
Caterpillar CAT 140M Grader Blade Lift Cylinder: The hydraulic cylinder that controls the vertical movement of the grader blade.
KOMATSU GD825A-2 Transmission Assembly: The complete unit responsible for transmitting power from the engine to the wheels of the motor grader.
Caterpillar CAT D10T Track Shoe: One of the individual steel plates that form the continuous track of the bulldozer, providing traction.