The J503303 needle roller bearing is used in excavator hydraulic pumps or transmission systems to withstand radial loads and maintain stable operation of the pump shaft or rotor. This bearing is precision-machined from high-strength bearing steel, and the needle roller surface is hardened, providing high wear resistance and high load-bearing capacity. It can operate stably for extended periods under high load, high vibration, and high temperature environments. Suitable for excavator pump system repair or replacement.
Features and Advantages
• High Load-Bearing Capacity: Can withstand high radial loads in excavator pump systems.
• Wear and Durability: The needle rollers and inner and outer rings undergo high-precision heat treatment, resulting in a long service life.
• Low Friction Operation: Ensures smooth pump shaft rotation, improving hydraulic efficiency.
• Compact Structure: Precise dimensions, easy installation, and can directly replace original parts.
• Long-Term Reliability: Adaptable to high temperature, high vibration, and high load operating environments.
Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for example Main cylinder block, cylinder head, crankshaft, Engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, movement, etc. almost all parts of the entire engine.
Q2: If I only know the excavator model, but can not offer parts No., what should I do?
A2: If possible, you can send us pictures of old products, name plate or the size for reference.
Q3: Can you accept sample order?
A3: Yes sure. We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q4: Do you test all your goods before delivery?
A4: Yes, we have 100% test before delivery.
Q5: How can I do if there is something wrong with the items?
A5: Our products have been professionally tested and the quality is very stable. If you really found something wrong, please contacts. We have a professional after-sales team to help you solve the problem.
