SQ70V
Lehnhoff SQ70V Fully Automatic Quick Coupler
The Lehnhoff SQ70V fully automatic quick coupler is engineered for 15–28 ton excavators working in demolition, excavation, utility construction, quarry, recycling, and heavy construction applications. Designed around the proven Lehnhoff S-standard interface, the SQ70V helps operators change hydraulic and mechanical attachments directly from the cab while reducing downtime and improving productivity.
The SQ70V combines compact coupler dimensions, high-flow hydraulic valve technology, and advanced safety monitoring to support fast attachment changes while maintaining excavator breakout force and hydraulic efficiency across demanding jobsites.
Lehnhoff SQ70V Features
The SQ70V is designed to improve excavator versatility, hydraulic performance, and operator safety in demanding attachment applications.
Key Features
- Fully automatic hydraulic and mechanical attachment changes directly from the operator cab.
- S-standard symmetrical quick coupler system supports multiple attachment positions.
- Short-stroke hydraulic valve technology delivers high oil flow with reduced pressure loss.
- Integrated Lehnhoff Safety Control (LSC) monitors secure attachment locking status.
- Compact coupler profile helps preserve excavator breakout force and lifting capacity.
- Protected hydraulic valve blocks improve durability in demanding environments.
- Supports fast switching between buckets, breakers, grapples, compactors, and hydraulic tools.
Built for Productivity
The Lehnhoff SQ70V helps reduce manual hose handling and attachment swap downtime while improving machine utilization throughout the workday. Operators can quickly transition between hydraulic and mechanical tools without leaving the cab.
Common Applications
The Lehnhoff SQ70V quick coupler is commonly used on mid-size excavators operating in demanding construction and demolition environments where fast attachment changes are essential.
Demolition
Switch quickly between breakers, grapples, pulverizers, and buckets during demolition operations.
Utility Construction
Support trenching, underground utility installation, and pipe work with multiple hydraulic attachments.
Excavation
Improve excavator versatility for grading, trenching, earthmoving, and site development projects.
Quarry & Aggregate
Support hydraulic hammer and bucket changes for rock breaking and aggregate applications.
Recycling
Increase productivity during material sorting, concrete processing, and scrap handling operations.
Heavy Construction
Reduce machine downtime and improve attachment flexibility on demanding construction projects.
Lehnhoff SQ70V Specifications
Compare the core operating specifications for the Lehnhoff SQ70V fully automatic quick coupler.
| Specification | SQ70V |
|---|---|
| Excavator Class | 15-28 tons |
| Coupling Shaft Diameter | 2.76 in |
| Axle Distance | 23.62 in |
| Width | 17.64 in |
| Approximate Weight | 617 lbs |
| Valve Configuration | 2xKV1 / 2xKV4 / 1xKV3 |
| Recommended Komatsu Excavators | PC138 - PC240 |
Why Choose the SQ70V?
The SQ70V combines fully automatic hydraulic coupling technology with compact quick coupler design for improved excavator efficiency and productivity. The integrated valve system allows operators to connect hydraulic attachments without manually handling hoses while helping reduce downtime between tasks.
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