PC200 Bucket Arm H Link 20Y-70-33111 fit Komatsu Excavator Parts
This Komatsu PC200 H Link (20Y-70-33111) is a durable and precisely engineered linkage component designed to stabilize bucket movement and maintain consistent digging performance. Manufactured from premium alloy steel with hardened bushings and accurate bore machining, it withstands continuous excavator cycling in construction, utility trenching, landscaping, and quarry applications.
| Colors | Black or yellow or customized |
|---|---|
| Surface Hardness | HRC52-58 |
| Material | Q235B, Q345B |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The H Link on a Komatsu PC200 excavator plays a crucial role in coordinating bucket movement, maintaining correct digging geometry, and transferring hydraulic force efficiently from the linkage system to the ground. Compared with larger PC220/PC270 models, the PC200 series is widely used in high-frequency work environments such as urban construction, drainage trenching, roadwork, and light mining—applications that require both durability and responsive bucket control.
The 20Y-70-33111 H Link is built to match the PC200’s balance of breakout force and fast cycling speed. Its construction focuses on structural stability, smooth articulation, and excellent wear resistance to withstand the constant pivoting motion typical of medium-class excavators.
High-Strength Alloy Steel Built for Continuous Operation
The PC200 H Link is manufactured from high-grade alloy steel selected for its toughness and resilience during continuous excavation cycles. This material provides the strength required to handle:
- repetitive hydraulic force transfer
- shock loads from bucket penetration
- side pressure generated during grading or angled cutting
The forging process ensures structural density and eliminates internal porosity, enabling the link to maintain shape and stability even during long-term intense use. A controlled heat-treatment cycle strengthens the external surfaces while keeping the internal core tough enough to absorb impact without cracking.
Precision-Machined Bores for Smooth, Controlled Bucket Motion
Because the H Link is a rotating structural connector, bore accuracy is critical. The 20Y-70-33111 model is machined to exact Komatsu specifications, ensuring:
- perfect alignment with bucket and linkage pins
- reduced friction during repeated articulation
- smoother bucket tilt and curl motions
- consistent breakout force across the digging stroke
The bores receive a fine surface finish that retains lubrication longer, minimizing both noise and wear even during high-frequency operations typical of PC200 urban job sites.
Pre-Machining Storage
Before final processing, each H-link is carefully stored after forging and initial shaping. You can see the robust raw units neatly stacked and ready for CNC machining and heat treatment — a testament to our in-house forging capability and batch processing control.
Export-Ready Packaging
Once machining, inspection, and anti-rust treatment are complete, the finished H-links are securely packed in palletized crates or wooden boxes, ensuring safe transport over long distances. All packages are labeled for easy identification and can be customized with your logo or barcode if required.
Wear-Resistant Bushings for Longer Service Life
A key feature of this H Link is its hardened bushings, designed to maintain dimensional stability under constant pivoting. These bushings resist abrasive wear from contaminants such as soil fines, sand, and gravel—common in utility and construction applications.
The hardened layer prevents premature ovaling, ensuring that the linkage maintains proper pin alignment and prevents power loss or unstable bucket behavior.
Optimized Geometry for Komatsu PC200 Digging Performance
The geometry of the H Link affects bucket leverage, force transmission efficiency, and cycle smoothness. The 20Y-70-33111 design follows Komatsu’s optimized profile to provide:
- stable digging angles
- balanced pin loading
- predictable bucket response during delicate operations
- efficient power transfer during breakout and loading
This enables PC200 operators to perform both precision tasks (like trench trimming) and heavy tasks (like compact soil excavation) with consistent control.
OEM Compatibility and Installation
The H Link is fully compatible with OEM specifications for:
- Komatsu PC200
- Part Number: 20Y-70-33111
Perfect dimensional accuracy ensures direct installation without modification, and complete compatibility with OEM pins, side links, and bucket cylinders.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOMATSU-PC | PC20 | PC30-5 | PC30-6 | PC30-7 | PC30-8 | PC35 | PC40 | PC45 |
| PC50 | PC55 | PC40-5 | PC40-6 | PC40-7 | PC50 | PC55 | PC60-1 | |
| PC60-3 | PC60-5 | PC60-6 | PC60-7 | PC75 | PC100-1 | PC100-3 | PC100-5 | |
| PC100-6 | PC100-7 | PC120-3 | PC120-5 | PC120-6 | PC120-7 | PC150 | PC200-1 | |
| PC200-3 | PC200-5 | PC200-6 | PC200-7 | PC200-8 | PC220-1 | PC220-3 | PC220-5 | |
| PC220-6 | PC220-7 | PC220-8 | PC200LC-3 | PC200LC-5 | PC200LC-6 | PC200LC-7 | PC200LC-8 | |
| PC240 | PC300-1 | PC300-5 | PC300-6 | PC300-7 | PC300LC | PC300LC-5 | PC300LC-6 | |
| PC300LC-7 | PC360-5 | PC360-6 | PC360-7 | PC360LC-5 | PC360LC-6 | PC360LC-7 | PC360LC-8 | |
| PC400-1 | PC400-3 | PC400-5 | PC400-6 | PC400-7 | PC400LC-1 | PC400LC-3 | PC400LC-5 | |
| PC400LC-6 | PC400LC-7 | PC450-5 | PC450-6 | PC450-7 | PC450LC-5 | PC450LC-6 | PC450LC-7 | |
| PC650 | PC750 | PC800 | PC350 | |||||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Reliability in Diverse Working Conditions
The PC200 is commonly deployed in varied working environments where the H Link experiences different kinds of mechanical stress. This model performs reliably in:
- construction earthmoving
- municipal pipeline trenching
- quarry loading and material handling
- backfilling and slope shaping
- demolition debris cleanup
Its reinforced design prevents distortion and maintains stable linkage geometry even in abrasive or uneven working conditions.
Maintenance Tips for Maximum Lifespan
To extend service life, routine inspection is recommended:
- Keep pivot points regularly greased.
- Avoid operating with dry bushings or contaminated pin joints.
- Clean mud and sand buildup to prevent abrasive wear.
- Monitor pin clearance and replace worn bushings promptly.
Following proper maintenance helps preserve linkage rigidity and bucket precision throughout the excavator’s operating hours.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
