CNC machining of high-quality spare parts for excavators PC-60,
shaft bucket linkage pins
Product Overview
We specialize in precision CNC machining of high-performance spare
parts for Komatsu PC-60 excavators, including shafts, bucket
linkage pins, bushings, and hydraulic components. Our parts are
manufactured to OEM standards (or higher) using certified materials
and advanced CNC processes, ensuring perfect fitment, durability,
and extended service life for your heavy equipment.
Key Features & Benefits
✔ Premium Material Selection
Alloy Steel (4140, 4340, SCM440) – Heat-treated for high strength
and wear resistance
Stainless Steel (304, 316) – Corrosion-resistant for harsh
environments
Case-Hardened Pins – Surface hardness HRC 55-60 with tough core
(HRC 28-32)
✔ Precision CNC Machining
Tolerances: ±0.01mm for critical bore/pin diameters
Surface Finish: Ground to Ra 0.4μm (mirror polish available)
Key Processes: Turning, grinding, threading, induction hardening
✔ Excavator-Specific Components
Bucket Linkage Pins – Precise diameters (20mm–80mm) with grease
grooves
Swing Shafts – Splined or keyed profiles per OEM specs
Bushings & Sleeves – Hardened inner surface for reduced wear
✔ Quality Assurance
100% Dimensional Inspection (CMM, micrometers)
Material Certs: EN 10204-3.1 with chemical composition reports
Performance Tests: Hardness, salt spray (500h+), load cycling
✔ Customization & Logistics
OEM Replacement: Match original Komatsu PC-60 part numbers
Modified Designs: Reinforced versions for extended lifespan
Fast Delivery: Samples in 5 days | Bulk in 10-15 days
CNC Machined Excavator Spare Parts - Technical Specifications
| Parameter | Specification | Testing Standard |
|---|
| Material Grades | Alloy Steel: 4140, 4340, SCM440
Stainless Steel: 304, 316
Case-Hardened Steel: 20MnCr5 | ASTM A322, JIS G4105 |
| Hardness | Core: HRC 28-32
Surface: HRC 55-60 (case-hardened parts) | ASTM E18 |
| Diameter Range | 20mm-80mm (standard)
±0.01mm tolerance | ISO 286-2 |
| Length Range | 50mm-500mm
±0.1mm tolerance | |
| Surface Finish | Ground: Ra 0.4μm
Turned: Ra 1.6μm | ISO 1302 |
| Straightness | ≤0.05mm/m | ISO 1101 |
| Grease Grooves | Standard: 1-3 grooves
Custom patterns available | |
| Thread Specifications | Metric/UNC/UNF
Class 6g/6H fit | ISO 965 |
| Heat Treatment | Induction hardened
Through hardened (optional) | ISO 683-1 |
| Corrosion Resistance | 500h salt spray (galvanized option) | ASTM B117 |
| Load Capacity | Shear strength: 800-1200MPa
Yield strength: 900-1100MPa | ISO 6892-1 |
| Certifications | ISO 9001, CE Marking
Material Traceability | EN 10204-3.1 |
| MOQ | 10pcs (standard sizes)
No MOQ for OEM replacements | |
| Lead Time | Samples: 5 days
Production: 10-15 days |
Applications
Bucket Linkage Assembly – Pins, retainers, washers
Undercarriage Components – Track bushings, sprocket shafts
Hydraulic System – Valve shafts, piston rods
Swing Mechanism – Gear shafts, slewing rings
Why Choose Our Excavator Parts?
Komatsu-Compatible – Interchangeable with PC-60/PC78/PC130 models
Extended Wear Life – 2-3X longer than standard aftermarket parts
Cost Savings – 30-50% lower than OEM dealers
ISO 9001 Certified – Full traceability from raw material to
shipment
How do I place an order?
You can contact us directly with your specifications, and our team
will assist you through the ordering process
