Lehnhoff SQ Quick Coupler
Lehnhoff SQ Fully Automatic Quick Coupler System
The Lehnhoff SQ Quick Coupler system from Montabert is designed for excavator operators who need faster attachment changes, improved hydraulic performance, and increased jobsite efficiency. The SQ system combines fully automatic hydraulic coupling technology with the proven Lehnhoff symmetric quick coupler design to reduce downtime and maximize excavator versatility.
Built for demanding demolition, utility, quarry, excavation, recycling, and construction applications, the Lehnhoff SQ system allows operators to switch hydraulic and mechanical attachments directly from the cab while maintaining secure locking and high-flow hydraulic performance.
Key Features & Benefits
The Lehnhoff SQ system combines advanced hydraulic coupling technology, fast attachment changes, and compact coupler design for demanding excavator applications.
Advanced SQ Coupler Technology
- Fully automatic hydraulic and mechanical attachment changes from the operator cab.
- Short-stroke valve technology delivers high oil flow with reduced pressure loss.
- Symmetrical quick coupler system supports multiple attachment positions.
- Integrated Lehnhoff Safety Control (LSC) monitors secure attachment locking.
- Compact coupler design helps maintain excavator breakout force and lifting performance.
- Protected hydraulic valve blocks improve durability in harsh jobsite environments.
Designed for Productivity
Lehnhoff SQ quick couplers are designed for contractors and operators who regularly switch between buckets, breakers, grapples, compactors, shears, and other hydraulic attachments throughout the workday.
Common Applications
Lehnhoff SQ fully automatic quick couplers are commonly used in demanding excavator applications where fast attachment changes, hydraulic performance, and uptime are essential.
Demolition
Quickly switch between breakers, pulverizers, grapples, and buckets during demolition operations.
Utility Construction
Improve efficiency on trenching, pipe installation, and underground utility projects.
Excavation
Handle excavation, grading, trenching, and material handling with multiple attachment types.
Quarry & Aggregate
Support hydraulic hammer, ripper, and bucket changes in heavy rock and quarry applications.
Recycling
Increase attachment flexibility for sorting, crushing, material processing, and scrap handling.
Heavy Construction
Reduce downtime and improve excavator utilization across demanding construction projects.
Lehnhoff SQ Quick Coupler Comparison Table
Compare excavator compatibility, dimensions, valve configurations, and operating weights across the Lehnhoff SQ quick coupler lineup.
| Specification | SQ60V | SQ70V | SQ70-55V | SQ80V | SQ90V |
|---|---|---|---|---|---|
| Excavator Class | 8-18 tons | 15-28 tons | 20-32 tons | 25-43 tons | 45-70 tons |
| Coupling Shaft Diameter | 2.36 in | 2.76 in | 2.76 in | 3.15 in | 3.54 in |
| Axle Distance | 18.90 in | 23.62 in | 23.62 in | 26.38 in | 29.53 in |
| Coupler Width | 13.31 in | 17.64 in | 21.65 in | 23.15 in | 29.45 in |
| Operating Weight | 375 lbs | 617 lbs | 705 lbs | 948 lbs | 1,631 lbs |
| Valve Configuration | 3x KV1 / 2x KV3 | 2x KV1 / 1x KV3 / 2x KV4 | 2x KV1 / 1x KV3 / 2x KV4 | 2x KV1 / 1x KV3 / 2x KV4 | 2x KV1 / 1x KV3 / 2x KV6 |
Why Choose Lehnhoff SQ?
The Lehnhoff SQ system helps excavator owners reduce attachment change times while improving hydraulic attachment efficiency and operator safety. The fully automatic design supports high-flow hydraulic tools without manual hose connections, helping maximize productivity throughout the workday.
Need Compatibility Help?
Send us your excavator make, model, attachment requirements, hydraulic specifications, and application details. Our team can help identify the correct Lehnhoff SQ coupler setup for your machine.
Lehnhoff SQ vs Traditional Quick Couplers
The Lehnhoff SQ system provides several advantages compared to conventional hydraulic quick coupler systems.
| Feature | Lehnhoff SQ System | Traditional Couplers |
|---|---|---|
| Attachment Changes | Fully automatic from the cab | Often requires manual handling |
| Hydraulic Connections | Integrated hydraulic coupling system | Manual hose connections |
| Hydraulic Oil Flow | High-flow short-stroke valves | Higher restriction and pressure loss |
| Safety Monitoring | Integrated locking monitoring system | Limited or no monitoring |
| Operator Downtime | Reduced attachment swap time | Longer attachment change process |
| Attachment Versatility | Supports multiple hydraulic attachments | More limited flexibility |
Ready to quote a Lehnhoff SQ Quick Coupler?
Brown's Heavy Equipment can help you compare coupler models, review excavator compatibility, and request pricing for the right Lehnhoff SQ attachment system.
