Caterpillar Bucket Tooth Adapter J-Series for CAT Excavators
Heavy-duty weld-on bucket tooth adapters compatible with Caterpillar J-Series tooth systems. Forged from high-strength alloy steel and precision-machined for perfect tooth engagement and welding contact. Designed to deliver secure fitment, impact resistance, and long service life in harsh excavation environments.
| Material | 30CrMnSi |
|---|---|
| Surface Hardness | HRC48-52 |
| MOQ | 10 Pieces |
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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 bucket tooth adapter—also called tooth base or tooth holder—is the structural foundation that links the bucket tooth to the excavator bucket. It’s welded directly onto the bucket lip and works with a pin and retainer to hold the tooth in place during digging operations.
In Caterpillar excavators such as CAT 320, CAT 336, and CAT 349, the adapter must endure massive force and vibration during rock penetration, soil loading, or debris excavation. A reliable adapter ensures proper tooth alignment, even load transfer, and quick tooth replacement, all of which are essential to maintaining bucket integrity and performance.
Material & Heat Treatment
Our CAT-style adapters are forged from 30CrMnSi alloy steel, offering high tensile strength, excellent fatigue resistance, and outstanding weldability. After forging, each adapter is heat-treated and normalized to eliminate internal stress and enhance structural uniformity.
Critical surfaces—including the tooth slot and bottom weld plane—are CNC-machined to tight tolerances, ensuring:
- Perfect locking with the tooth
- Stable welding contact with bucket lip
- Consistent fit across multiple units
Surface shot blasting removes impurities and prepares the adapter for paint or direct welding.
Compatible J-Series Sizes & Applications
We stock a full range of Caterpillar bucket teeth compatible with J-Series adapters, including:
| Adapter Size | Common Fitment Models | Use Case |
|---|---|---|
| J200 | CAT 311, 312, E120 | Compact excavators |
| J250 | CAT 315, 318, 120, 313 | Light excavation, trenching |
| J300 | CAT 320, 322 | Standard digging and loading |
| J350 | CAT 325, 330, 336 | Medium-heavy excavation |
| J400/J450 | CAT 345, 349, 374 | Mining, quarrying, demolition |
All adapters support side-pin and retainer systems, and tooth replacement is simple and secure.
Installation Example: Bucket Tooth + Adapter Assembly
The diagram below shows a typical Caterpillar-style bucket tooth installed on a weld-on adapter, secured with a pin and retainer. This setup is standard across most J-series systems and ensures a reliable, field-serviceable connection between the bucket and tooth tip.
In this configuration:
- The adapter is welded directly onto the bucket lip
- The tooth slides over the adapter nose and aligns with the pinhole
- A locking pin and retainer secure the tooth in place, preventing lateral or axial movement during operation
This modular design allows fast tooth replacement without removing the adapter, reducing machine downtime and maintenance costs. For full kits—including teeth, adapters, pins, and retainers—please contact us for availability by model or system size.
Compatibility Chart — Caterpillar Bucket Adapters
Our bucket adapters are compatible with popular Caterpillar references such as:
| Machinery Type | Product | Part No. | Weight (kg) |
|---|---|---|---|
| E200B | Bucket Adapter | 1U0307 | 9.8 |
| E200B | Bucket Adapter | 3G4308 | 14 |
| E200B | Bucket Adapter | 3G4309 | 14 |
| E320 | Bucket Adapter | 3G8354 | 9.5 |
| E368 | Bucket Adapter | 616464 | 19 / 18.2 |
| CAT305 | Bucket Adapter | 1U3204-18 | 1.85 |
| CAT305 | Bucket Adapter | 1U3204-20 | 1.85 |
| CAT307 | Bucket Adapter | 6Y3224-25 | 2.85 |
| CAT312 | Bucket Adapter | 6Y3254-30 | 3.75 |
| CAT315 | Bucket Adapter | 9W1304-30 | 6.9 |
| CAT320 | Bucket Adapter | 6I6354-40 | 8.9 |
| CAT325 | Bucket Adapter | 6I6404-50 | 13 |
| CAT330 | Bucket Adapter | 6I6464-50 | 19 |
| CAT330 | Bucket Adapter | 6I6464-60 | 19 |
| CAT345 | Bucket Adapter | 6I6554-60 | 30 |
| CAT345 | Bucket Adapter | 6I6554-70 | 30 |
If you have a worn adapter or part code, just send us the casting number or photo—we’ll identify the correct adapter within 12 hours.
FAQ – CAT Bucket Adapters
Q: Can I use this adapter with your CAT bucket teeth?
A: Yes, our J-series adapters are 100% compatible with our forged bucket teeth and pins.
Q: How do I know which adapter size I need?
A: If you're unsure, send us your excavator model, bucket lip thickness, or photos—we'll recommend the correct adapter size.
Q: Can I order adapters with pins and teeth as a complete kit?
A: Absolutely. We offer full tooth + pin + adapter sets for convenience.
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.
