Products
High-Strength Cast Excavator Quick Couplers
This excavator quick coupler features a dual-locking mechanism, supports rapid attachment changes, and complies with global safety standards (ISO 13031, EN 474). Transform your compact excavator into a versatile multi-tool carrier with our high-strength cast quick couplers.
1. Product Overview
The Quick Couplers is Designed specifically for compact excavators, this component allows operators to directly hook buckets and other attachments onto the machine rapidly and safely. Transform your machine into a secure and reliable multi-tool carrier with our premium Cast Excavator Quick Couplers.
Its core value lies in its efficiency: operators can change attachments within seconds—without the need for additional tools or manual pin removal. This allows a single excavator to rapidly switch between different tasks (from digging to grading to lifting), significantly boosting equipment utilization, reducing work lead times, and maximizing production hours on the job site.
2. Key Features & Design Advantages
Our excavator quick couplers are engineered to enhance yield and increase team safety, ensuring you get the best performance on every job.
- Universal Connectivity: Turn your compact excavator from a simple digging machine to a multi-tooled carrier, maximizing machine uptime and versatility.
- Low Profile Design: Engineered with a shorter pin-to-point measurement, this design delivers maximum breakout force for greater digging productivity.
- Integrated Lifting Eye: Features a cast lifting eye located in the center of the rear coupler, providing maximum strength and lifting capacity for utility work.
- 100% High-Strength Cast Design: Cast entirely from high-tensile steel, this coupler delivers exceptional high-strength performance, resisting wear and deformation in harsh environments.
- Global Safety Compliance: Fully compliant with all relevant global legislation, including EN474, Machinery Directive 2006/42/EC, AS4772, and ISO13031.
3. Detailed Specifications
| Parameter | Specification |
| Product Name | Custom High-Strength Cast Excavator Quick Couplers |
| Part No | SG-8 |
| High (H) | 12.4″ [315 mm] |
| Length(L) | 9.46″ [240.3 mm] |
| Min P | 17.44-18.04″ |
| Min P | 20.47-20.66″ |
| Total thickness(H) | 12.84″ [326 mm] |
| Total Length(L) | 29.53″ [750 mm] |
| Width | 14.6″ [370 mm] |
| Type | Pin Coupler |
| Colour | Original / Black/ Yellow |
| Tensile Strength(MPa) | ≥1200 |
| Yield Strength(MPa) | ≥1100 |
| Impact (J) | ≥35 |
| Hardness (HB) | 295-330 |
| Materials | Chromium Moly Alloy |
| Production Processes | Lost-Wax/ Silica Sand |
| Certificates | IS09001-2005 |
| Heat Treatment | Normalizing, Quenching, Tempering |
We can customize Excavator Quick Couplers according to customer requirements.
| Description | SG-2 | SG-4 | SG-5 |
| Minimum Width [A] | 6.66″ | 8.70″ | 10.91″ |
| Pin Diameter [D] | 1.96″-2.36″ | 2.36″-2.56″ | 2.76″-3.15″ |
| Pin Distance Min [Min P] | 11.03″-11.42″ | 13.59″-13.98″ | 14.81″-15.40″ |
| Pin Distance Max[ Max P] | 12.48″-12.59″ | 16.33″-16.53″ | 18.58″-18.77″ |
| Vertical Offset [V] | 7.48″ | 8.82″ | 10.51″ |
| Horizontal Offset [H] | 5.47″ | 8.82″ | 8.98″ |
| Description | SG-6 | SG-8 | SG-10 |
| Minimum Width [A] | 12.08″ | 12.84″ | 13.38″ |
| Pin Diameter [D] | 3.15″ | 3.15″-3.54″ | 3.54″-3.93″ |
| Pin Distance Min [Min P] | 16.93″ | 17.44″-18.04″ | 18.58″-19.68″ |
| Pin Distance Max[ Max P] | 20.47″ | 20.47″-20.66″ | 23.70″-23.90″ |
| Vertical Offset [V] | 10.71″ | 12.40″ | 13.31″ |
| Horizontal Offset [H] | 8.98″ | 9.76″ | 10.35″ |
4. Manufacturing Process & Material Specifications
- Material: Premium High-Strength Alloy Steel.
- Casting Process: Precision manufactured using the investment casting (or silica sol casting) process.
- Advantage: This advanced casting method ensures a compact, unified structure with exceptional surface finish, tight dimensional tolerances, and the elimination of weak points often found in welded alternatives.
5. Applications & Accessory Information
Primary Applications:
Construction, demolition, landscaping, roadwork, and utility projects. Ideal for compact and mini excavators requiring frequent tool changes.
Compatible Accessories:
Standard digging buckets, trenching buckets, hydraulic breakers, grapples, rippers, and compactors.
Note: Our extensive range of cast couplers ensures your equipment can seamlessly access the exact accessories needed for your specific project requirements.
6. Buyer’s Guide: What to Consider When Purchasing
When sourcing quick couplers for your fleet, keep the following considerations in mind:
- Machine Compatibility: Ensure the coupler’s pin diameter, dipper gap, and pin center measurements match your specific excavator make and model.
- Safety Compliance: Verify that the product meets the safety standards required in your operating region (e.g., ISO13031 or EN474).
- Hydraulic vs. Mechanical: While hydraulic couplers (like this one) offer the fastest, tool-free changes directly from the cab, ensure your machine has the necessary auxiliary hydraulic lines to support it.
- Material Integrity: Look for one-piece cast designs over welded assemblies, as cast alloy steel provides superior durability and a longer operational lifespan.
7. Frequently Asked Questions (FAQs)
Q: Do I need extra tools to change attachments with this coupler?
A: No. The hydraulic locking mechanism allows attachments to be switched in seconds directly from the cab, completely eliminating the need for manual pin removal or additional tools.
Q: What happens if there is a sudden loss of hydraulic pressure?
A: Our couplers are equipped with built-in burst/pressure-holding valves and a dual mechanical locking mechanism. Even in the event of total hydraulic failure or a ruptured hose, the attachment will remain securely locked in place.
Q: How does the “Low Profile” design affect digging?
A: A low-profile coupler minimizes the distance between the end of the excavator’s stick and the bucket teeth (the pin-to-point measurement). This shorter distance preserves the machine’s original geometry, ensuring you do not lose breakout force or digging power.
Q: Can I use attachments from different brands with this coupler?
A: Yes, provided the attachments share the same pin dimensions. Our universal connectivity design is engineered to pick up a wide variety of standard attachments within the same weight class.
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