Bucket Pin
Kumatsu PC360 Lokasi pemasangan: pakai belakang silinder minyak lengan tengah penggali Saiz: diameter 90mm, panjang kira-kira 520mm Nombor bahagian: 708-2G-12121
隐藏域元素占位
Product Introduction
Production process
Precision Manufacturing Process & Core Production Technology for Excavator Bucket Shafts (Pins)
I. Raw Material Selection & Pre-treatment
High-quality alloy structural steels (40Cr, 45# carbon steel, etc.) are adopted as base materials.
Upon incoming inspection, raw materials undergo spectral composition analysis and ultrasonic non-destructive testing to eliminate internal defects such as cracks, porosity, and inclusions, ensuring consistent mechanical properties from the source.
II. CNC Rough Machining & Forming
III. Quenching & Tempering Heat Treatment (Core Strengthening & Toughening Process)
IV. Semi-finish Turning & Reference Finishing
Using the center hole as the precision positioning reference, CNC semi-finish turning is performed to refine the outer diameter, end face, shaft shoulders, and mounting areas.
This ensures key geometric accuracies including concentricity and perpendicularity, laying a foundation for surface strengthening and final grinding.
V. Precision Hole Machining
VI. High-Frequency Induction Hardening (Wear Resistance Strengthening Process)
VII. High-Precision Cylindrical Grinding
VIII. Mirror Polishing & Precision Finishing
Ultra-precision polishing is performed on key fitting surfaces, achieving surface roughness of Ra ≤ 0.4 μm (mirror finish).
This further reduces the friction coefficient, improves lubrication efficiency, and delays component aging.
IX. End Structure Forming & Welding Strengthening
According to machine model requirements, automatic welding is applied to shaft ends for retaining rings, flanges, or positioning ends.
Post-weld stress relief annealing and grinding are conducted to ensure high welding strength and smooth appearance, eliminating risks of incomplete fusion or cracking.
X. Surface Protection Treatment
Multiple anti-corrosion processes are applied based on service environments, including blackening, phosphating, electrostatic spraying, and anti-rust oil dipping.
This improves weather resistance and corrosion resistance, meeting anti-rust requirements for storage, transportation, and field operation.
XI. Full-Dimension Finished Product Inspection & Factory Quality Control
XII. Standardized Packaging & Warehousing
Finished products are sealed with anti-rust protection and fitted with end protectors before standardized packing.
This provides moisture-proof, collision-proof, and scratch-proof protection, ensuring intact delivery condition.
Introduction to the benefits of products with holes
Many people do not understand the polished perforated bucket shaft. In fact, the polished perforated bucket shaft is designed to provide better lubrication for the butter and allow the butter to cover the shaft more comprehensively
Hardness and carburizing thickness of the shaft
If the hardness of the shaft body is too hard, it will not be wear-resistant. If the hardness is not enough, it will be easy to break. Some manufacturers on the market will use 45 steel to make mirror shafts, but the hardness of 45 steel is uncontrollable. The hardness will only be too high, so there will be a situation where the shaft is not wear-resistant but the service life is not long
The hardness of the product is 51-55
The carburizing thickness is two centimeters on each side
Core Product Portfolio
Our products are engineered to meet the rigorous demands of heavy machinery operations, covering the following key categories:
• Excavator Components: High-strength bucket bodies, bucket teeth (available in standard and custom configurations), and ground-engaging tools. Specifically designed for harsh conditions like gravel and rock, these components deliver exceptional wear resistance.
• Rotary Drilling Rig Accessories: Precision-engineered drilling buckets and cutting teeth in various sizes and models. Optimized for soft soil, hard rock, and other geological layers, they enhance drilling efficiency in piling and earthwork operations for foundation construction.
• Hoisting & Handling Equipment Parts: Lightweight/small-capacity and heavy-duty carriers, lifting attachments, and industrial hardware. These parts ensure reliable performance for lifting and transporting equipment across diverse applications.
• Industrial & Mining General Accessories: A comprehensive range of wear-prone components, including underframe parts, attachments, pins, bushings, and wear plates. We serve both original equipment manufacturers (OEMs) and aftermarket customers.
Manufacturing Capabilities & Production Assurance
Backed by a modern 3,800㎡ production facility, we combine advanced technology with artisanal expertise to ensure consistent quality and efficient delivery:
• Technical Team: Over 40 senior engineers and managers with deep expertise in mechanical design, materials science, and quality control. They oversee every stage of product development and production.
Advanced Equipment
I. Cutting Equipment
CNC Lathe
For rough turning, semi-finish turning, finish turning of external profiles, shaft shoulders and chamfers.
CNC Machining Center / CNC Drilling Machine
For precision drilling of center oil holes, radial oil holes and lock plate holes.
II.CNC Cylindrical Grinder
To ensure shaft diameter accuracy, cylindricity and surface finish.
Polishing Machine / Ultra-precision Polishing Machine
To achieve mirror-level surface finish.
III. Core Heat Treatment Equipment
Continuous Quenching and Tempering Furnace / Box-type Quenching & Tempering Production Line
Quenching + high-temperature tempering to improve overall strength and toughness.
High-Frequency Induction Hardening Machine
Local surface strengthening of shaft surfaces to enhance wear resistance.
Tempering Furnace
To relieve internal stress and stabilize dimensions.
IV. Welding & Forming Equipment
Automatic Welding Machine / MIG Welding Machine
Welding of shaft end retaining rings and shaft ends.
Stress Relief Annealing Furnace
To eliminate internal stress after welding.
V. Surface Treatment Equipment
Blackening / Phosphating Treatment Line
Electrostatic Spraying Equipment / Paint Spraying and Drying Line
Anti-rust Oil Dipping Equipment
VI. Inspection & Quality Control Equipment
Hardness Tester (Rockwell / Brinell)
2D Image Measuring Instrument / Calipers, Micrometers, Height Gauges
Surface Roughness Tester
Flaw Detector (Magnetic Particle / Ultrasonic)
VII. Auxiliary Supporting Equipment
Overhead Crane, Cantilever Crane
Material Racks, Tooling and Fixtures
Cleaning Machine
Quality Control & Global Certifications
Quality is the cornerstone of our operations. Certified to ISO 9001, we have established a comprehensive quality control system spanning the entire production process:
• Material Selection: We source high-performance alloy steels (e.g., 40CrMo, 45CrMnTi) and enforce strict testing for chemical composition and mechanical properties (tensile strength, impact toughness, etc.).
• Process Oversight: Critical components undergo in-house non-destructive testing (NDT), hardness checks, and rated load verification to ensure performance compliance.
• Traceability: Full batch tracking from raw material incoming to final delivery guarantees transparency and accountability.
Today, over 95% of our products meet or exceed international standards (CE, ASTM, ISO), earning widespread recognition in global markets.
Market Reach & Service Commitments
With years of industry expertise, we have built a robust global presence:
• Domestic Market: Our products are distributed across 30 provinces and over 300 key cities in China, serving leading construction and mining enterprises.
• Global Exports: We currently export to 20+ countries and regions, including Southeast Asia (Vietnam, Indonesia), the Middle East (Saudi Arabia, UAE), and Europe (Germany, Poland). Renowned for our cost-effective performance and durability, our components have established a strong reputation in these markets.
You Are Currently Facing The Problem?
Our company creates a professional network for sales and services, extends its reach of services over the globe, sets up an integrated system for pre- during and post sale services.
Are you a factory or a trading company?
We are an excavator manufacturer, with independent R&D and production capabilities, supporting customized production and ensuring controllable quality. Our main customers are located in Australia, the Philippines, Kazakhstan, Bhutan, Indonesia, Vietnam, Asia, Europe, Oceania, and Africa.
Which countries do you mainly export to?
Our products are mainly exported to more than 30 countries, including Europe, America, Southeast Asia, and the Middle East.
Do you offer customization services?
Yes, we provide OEM/ODM services and can customize production according to your drawings and requirements.
What is your minimum order quantity (MOQ)?
The MOQ varies by product. Generally, spare parts MOQ is 10 pieces, while complete components MOQ is 1 set.
What is your delivery time?
Regular products can be delivered within 15-30 days, while customized products depend on the order quantity and process.
Looking ahead, we remain committed to:
• Investing 8% of annual revenue in R&D to develop next-generation products (e.g., wear-resistant coatings, smart sensors for condition monitoring).
• Establishing localized service centers in key overseas markets to enhance after-sales support.
• Transitioning to green manufacturing by adopting eco-friendly production processes.
At Xinfenghua, we go beyond supplying parts – we act as strategic partners, dedicated to helping you optimize equipment performance and reduce total cost of ownership.
Specialized OEM Services
1. Material
2. Color
3. Size And Shape
4. Logo
6. Packaging
Related Products
Model yang terpakai: Komatsu PC200-8 (penggali kelas 20 tan) Lokasi pemasangan: tempat sambungan pandang dengan lengan kecil (pin pandang) Parameter saiz: diameter kira-kira 80mm, panjang kira-kira 445mm Rujukan Nombor Bahagian: Nombor Bahagian Asal Komatsu 20Y-70-31180
Kumatsu PC360 Lokasi pemasangan: pakai belakang silinder minyak lengan tengah penggali Saiz: diameter 90mm, panjang kira-kira 520mm Nombor bahagian: 708-2G-12121
