Lehnhoff Fully Automatic Quick Coupler | SQ90V
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Lehnhoff SQ90V Fully Automatic Quick Coupler
The Lehnhoff SQ90V fully automatic quick coupler is engineered for 45–70 ton excavators operating in demolition, quarry, mining, excavation, recycling, and heavy construction applications. Built around the proven Lehnhoff S-standard interface, the SQ90V allows operators to quickly change hydraulic and mechanical attachments directly from the cab while improving productivity and reducing machine downtime.
The SQ90V combines heavy-duty coupler construction, high-flow hydraulic valve technology, and integrated safety monitoring to support demanding hydraulic attachment applications while maintaining excavator lifting and breakout performance.
Lehnhoff SQ90V Features
The SQ90V is designed to improve excavator versatility, hydraulic efficiency, and operator safety for large excavators working in demanding heavy-duty 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.
- Heavy-duty coupler design supports demanding hydraulic attachment applications.
- Protected hydraulic valve blocks improve durability in severe operating environments.
- Supports fast switching between breakers, grapples, buckets, shears, pulverizers, and hydraulic tools.
Built for Large Excavators
The Lehnhoff SQ90V helps reduce attachment swap downtime while improving excavator utilization on demanding large-scale projects. Operators can quickly transition between hydraulic and mechanical attachments without manually handling hydraulic hoses.
Common Applications
The Lehnhoff SQ90V quick coupler is commonly used on large excavators operating in demanding demolition, quarry, mining, and heavy construction environments where fast attachment changes and hydraulic performance are critical.
Demolition
Quickly switch between breakers, pulverizers, grapples, buckets, and shears during heavy demolition operations.
Mining
Support heavy-duty hydraulic attachment applications in demanding mining environments.
Quarry & Aggregate
Support hydraulic hammer and bucket changes for rock breaking and aggregate production applications.
Excavation
Improve excavator versatility for mass excavation, trenching, grading, and large-scale site development.
Recycling
Increase productivity during concrete processing, scrap handling, and material sorting operations.
Heavy Construction
Reduce machine downtime and improve attachment flexibility across demanding infrastructure and construction projects.
Lehnhoff SQ90V Specifications
Compare the core operating specifications for the Lehnhoff SQ90V fully automatic quick coupler.
| Specification | SQ90V |
|---|---|
| Excavator Class | 40-70 tons |
| Coupling Shaft Diameter | 3.54 in |
| Axle Distance | 29.53 in |
| Width | 29.45 in |
| Approximate Weight | 1,631 lbs |
| Valve Configuration | 2xKV1 / 2xKV6 / 1xKV3 |
| Recommended Komatsu Excavators | PC490 - PC800 |
Why Choose the SQ90V?
The SQ90V combines fully automatic hydraulic coupling technology with heavy-duty quick coupler construction for improved excavator productivity and attachment flexibility. The integrated hydraulic valve system allows operators to connect hydraulic attachments without manually handling hoses while helping reduce downtime between tasks.
Need Compatibility Assistance?
Send us your excavator make, model, hydraulic specifications, attachment requirements, and application details. Our team can help confirm compatibility for the Lehnhoff SQ90V quick coupler system.
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