When it comes to excavator quick couplers, Lingdong’s Triple-Lock Flat-Push Quick Coupler stands out with its impressive adaptability across a much broader range of excavator sizes.
Why Most Quick Couplers Are Limited
On the market today:

Cast-type flat-push quick couplers typically max out at around 15 tons.
Standard cast quick couplers usually stop at 20 tons.

Casting excels at high-precision mass production for smaller machines (mainly 4-8 ton class), but it has clear limitations in load-bearing capacity for heavier excavators. Producing large-tonnage cast couplers with sufficient strength becomes extremely expensive.
Lingdong’s Welded Advantage
Lingdong’s Triple-Lock Flat-Push Quick Coupler is a high-quality welded structure made from premium national-standard high-strength steel plates (with options for even higher-grade wear-resistant plates).
Although the precision welding process requires specialized tooling and skilled labor — resulting in relatively higher production costs — the final product delivers significantly better load-bearing capacity than cast alternatives.

Current Capabilities:

Successfully supports excavators up to 30 tons
Structural design is theoretically capable of handling up to 120-ton excavators

Larger models require heavier-duty processing equipment. However, due to currently limited market demand for ultra-heavy quick couplers, we have not yet put the biggest versions into full production.
Why Choose Lingdong Triple-Lock Flat-Push Quick Coupler?

Wider tonnage compatibility (especially for mid-to-large excavators)
Triple independent locking system for maximum safety
Exceptional strength and durability under heavy loads
Reliable performance for demanding applications

Whether you operate 8-ton minis or 30-ton heavy excavators, Lingdong offers a robust, safe, and versatile quick coupler solution that grows with your fleet.

Contact Shandong Lingdong Intelligent Equipment today — we’ll help you select the perfect model for your machine tonnage and working conditions! 🏗️💪