Big Scissor Lift (Under-Ground)
An automotive underground (in-ground) big scissor lift is a heavy-duty hydraulic lifting system permanently installed flush with your workshop or garage floor. By embedding the mechanisms inside a concrete pit, these lifts eliminate above-ground structural obstructions. This provides 360-degree vehicle access and saves valuable floor space when lowered
Description
Big Scissor Lift (Under-Ground)
An automotive underground (in-ground) big scissor lift is a heavy-duty hydraulic lifting system permanently installed flush with your workshop or garage floor. By embedding the mechanisms inside a concrete pit, these lifts eliminate above-ground structural obstructions. This provides 360-degree vehicle access and saves valuable floor space when lowered.
1. High-Output "Super Power" Performance
- Heavy-Duty Weight Capacity: Standard models are engineered to handle between 3,500 kg to 5,000+ kg (7,700 to 11,000+ lbs) , effortlessly hoisting heavy commercial vans, loaded utility trucks, and large SUVs.
- Dual Synchronous Hydraulic Drive: Power is distributed through twin high-pressure hydraulic cylinders on both platforms. This ensures perfectly level synchronous lifting, preventing platform tilt even under uneven vehicle weight distribution.]
- High-Kilowatt Power Units: Driven by 2.2 kW to 3.0 kW heavy-duty hydraulic motors, these systems require a stable 380V three-phase or heavy 220V single-phase power supply to achieve a full 1.8-meter rise in under 50 seconds.
2. Multi-Layer "Triple Protection" Safety
- Pneumatic / Electronic Mechanical Safety Locks: The lift mechanically locks into deep steel gear racks as it rises. An electronic push-button safety release (often 24V for optimal operator safety) automatically disengages the mechanical jaws only when a deliberate lowering command is given.
- Hydraulic Burst Protection & Redundancy: Integrated hose-burst valves instantly lock hydraulic oil in place if a high-pressure line suddenly ruptures, preventing an uncontrolled descent.
- Audible Lowering Alarms: Built-in proximity sensors activate a loud warning alarm once the lift descends past 300 mm from the ground floor to warn nearby technicians to clear their feet.
3. Space Optimization & Premium Engineering
- Flush-Mount Zero-Footprint Design: When fully retracted, the upper runways sit 100% flush with your garage floor . This allows other vehicles to drive straight over the bay, unlocking maximum multi-use utility for tight workshop footprints.
- Open-Floor Structural Freedom: With no columns, overhead crossbars, or outer posts, technicians gain unrestricted 360-degree access to wheels, brakes, and complete exhaust systems.
- Extendable / Flexible Platform Runaways: Many units feature load-bearing flip-out ramps or slide-out deck extensions. This allows the platforms to cleanly adapt to varying vehicle wheelbases—from compact sports cars to long-wheelbase cargo vans.
4. Advanced Maintenance Feature Options
- Wheel Alignment Readiness: Premium variants come built out with laser-calibrated turntable recesses and built-in rear slip plates to double as a precision four-wheel alignment bay.
- Low Maintenance Bushings: High-tier systems utilize self-lubricated, PTFE-impregnated bronze bushings to sustain tens of thousands of cycles without requiring constant grease service.
Specification
| Specification Category | Parameter | Typical Standard Value |
|---|---|---|
| Specification Metric | General & Mechanical Specifications | 5.5-Ton (Heavy-Duty Industrial) |
| Rated Lifting Capacity | 4,000 kg (8,800 lbs) | 5,500 kg (12,125 lbs) |
| Static Proof Load Test | 4,800 kg (120% load capacity) | 8,250 kg (150% structural test) |
| Maximum Lifting Height | 1,850 mm (72.8") | 2,130 mm (83.8") |
| Recessed Pit Depth (Lowered Height) | 330 mm (13") | 360 mm (14.1") |
| Platform Runway Length | 4,500 mm (with extensions) | 5,200 mm (with extensions) |
| Platform Runway Width | 600 mm (23.6") | 650 mm (25.6") |
| Clearance Between Platforms | 900 mm (35.4") | 1,000 mm (39.3") |
| Lifting / Lowering Time | ≤ 50 seconds / ≤ 40 seconds | ≤ 60 seconds / ≤ 45 seconds |
| Electrical, Hydraulic & Pneumatic Requirements | ||
| System Component | Requirement Specification | Notes / Purpose |
| Motor Power Rating | 2.2 kW to 3.0 kW | Heavy-duty, industrial continuous-cycle motor |
| Primary Voltage Options | 380V / 3-Phase or 220V / 1-Phase | 3-phase is highly recommended for faster rise times |
| Control Console Voltage | 24V DC Low-Voltage | Protects operator from high-voltage shocks at the console |
| Hydraulic Working Pressure | 26 MPa to 30 MPa (260–300 bar) | High-pressure dual synchronous cylinder system |
| Hydraulic Oil Type | ISO VG 32 or VG 46 | 12 to 16 Litres required (Anti-wear hydraulic fluid) |
| Pneumatic Air Pressure | 0.6 MPa – 0.8 MPa (6–8 bar) | Required from shop air line to release mechanical locks |
| Concrete Foundation & Pit Requirements | ||
| Construction Metric | Minimum Requirement | Notes / Purpose |
| Concrete Thickness (Pit Floor) | Minimum 200 mm to 300 mm | Must be level and reinforced with steel rebar |
| Concrete Compressive Strength | 3,000 PSI (C25/30 Grade minimum) | Prevents cracking from massive localized point loads |
| Pit Edge Reinforcement | 50mm x 50mm x 5mm L-shaped angle iron | Welded to rebar before pouring to protect pit corners |
| Drainage Requirement | Integrated 100mm floor sump pit | Prevents standing water from damaging electronics/cylinders |
Related Products
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