Wood's Powr-Grip MTA8LP6F Mobile Battery-Powered Stone Lifter with Tilt

Wood's Powr-Grip MTA8LP6F Quadra-Tilt 360 Vacuum Lifter Mechanically Assisted Tilt for Medium-Duty Stone Handling

The Wood's Powr-Grip MTA8LP6F is a professional-grade vacuum lifter engineered for medium-duty stone handling applications requiring frequent transitions between horizontal and vertical load orientations. With a 360 lb (165 kg) load capacity and a Quadra-Tilt four-bar linkage system, it is purpose-built for contractors and fabricators moving granite countertops, large-format tile, glass panels, and similar flat materials. The lifter is available in AC-powered (120v or 240v) and air (venturi) configurations, and in both wide and narrow pad spread configurations to accommodate varying jobsite requirements. It is sold exclusively through authorized dealers and is designed to ASME B30.20 (BTH-1 Design Category "B", Service Class "0") standards.

Unlike standard vacuum lifters that require manual repositioning or brute-force tilting, the MTA8LP6F uses a Quadra-Tilt four-bar linkage that makes tilting mechanically assisted, reducing operator fatigue and improving control during the critical transition between flat and upright positions. The sliding adjustable pad mounts allow tool-free repositioning to accommodate different load dimensions, and the spring-mounted pads automatically conform to slightly uneven load surfaces for a consistent seal.

Key Features & Benefits

Quadra-Tilt Four-Bar Linkage

The Quadra-Tilt linkage mechanically assists the 90° tilt between upright and flat positions, significantly reducing the physical effort required when transitioning large, heavy stone slabs. The system also automatically holds the load in both the upright and flat positions once correctly attached, freeing the operator to focus on precise placement rather than fighting the weight of the material.

Sliding Adjustable Pad Mounts

Pad mounts slide to infinitely variable positions along the pad frame without tools, allowing the lifter to accommodate a wide range of load sizes quickly between lifts. The standard pad spread ranges from a minimum of 38" x 18-1/4" (96 cm x 46 cm) to a maximum of 100-3/4" x 29" (256 cm x 74 cm), covering the majority of countertop and slab dimensions encountered in the field.

Spring-Mounted Vacuum Pads

Each of the eight 6" (15 cm) diameter vacuum pads is spring-mounted to automatically adjust to minor variations in the angle of the load surface, ensuring consistent pad-to-surface contact even on slightly bowed or textured materials. This reduces the risk of partial seal failures that can compromise lift safety.

Blow-Off Release System

The blow-off release reverses airflow through the pads to instantly break the vacuum and release the load cleanly, eliminating the after-stick that can cause sudden load shifts during placement. Attach and release times are approximately 2 seconds each, keeping workflow efficient on the job.

Vacuum Gauge with Green/Red Zones

The vacuum gauge provides a clear, at-a-glance indication of whether vacuum levels are sufficient for lifting, with green and red zones eliminating guesswork. Operators can monitor seal integrity throughout the lift, and the optional Vacuum Loss Warning Buzzer (93780AM) adds an audible alarm for additional safety in noisy environments.

Multiple Control Handles

Multiple handle positions give operators the flexibility to choose ergonomic grip locations suited to their specific task and body position, reducing strain during extended use. The twist-lock electric plug (AC models) ensures the power connection cannot be accidentally pulled free during operation.

Common Applications

Granite and Quartz Countertop Installation

Lift and tilt fabricated stone countertop slabs from a flat transport or storage position to vertical for installation, minimizing manual handling risk on heavy slabs up to 360 lbs.

Large-Format Stone Slab Handling

Move full-size natural or engineered stone slabs in fabrication shops or on jobsites, with pad spread adjustability accommodating a wide range of slab dimensions without reconfiguring hardware.

Glass Panel Positioning

Handle large glass panels that require careful transition from horizontal to vertical, where the Quadra-Tilt linkage provides controlled, stable tilting motion to prevent breakage.

Porcelain and Ceramic Tile Setting

Position oversized porcelain or ceramic tiles during installation where manual handling is impractical, using the adjustable pad mounts to center vacuum coverage on varying tile formats.

Stone Countertop Fabrication Shop Use

Integrate the lifter into a fabrication workflow to safely move slabs between cutting, polishing, and staging areas, reducing worker injury risk and improving throughput.

Window and Panel Installation

With the optional 2" (5 cm) pad spacers (97461), the lifter can handle windows with mullions or other loads with surface obstructions, expanding its utility beyond standard flat-surface applications.

Compatible Materials

• Granite slabs and countertops
• Quartz and engineered stone surfaces
• Marble and natural stone panels
• Large-format porcelain and ceramic tile
• Glass panels and windows
• Smooth concrete panels
• Solid surface and composite stone materials
• Other flat, non-porous or low-porosity smooth-surface materials suitable for vacuum attachment

Product Documents

• Instructions — MTA8LP6FAC (AC Model)
• Specifications Sheet — MTA8LP6FAC
• Troubleshooting / Leak Test Procedure
• Instructions — MTA8LP6FAIR (Air/Venturi Model)
• Instructions — Vacuum Loss Warning Buzzer (Option 93780AM)
• Specifications — Vacuum Loss Warning Buzzer (Option 93780AM)

Application Instructions

Before Using the Lifter

1. Read all instructions and warnings before operating the lifter.
2. Perform the every-lift inspection: check vacuum pads for damage or contamination, inspect hoses and fittings for wear, verify the tilt linkage moves freely, and confirm the vacuum gauge reads correctly.
3. Ensure the power source matches the lifter's rated voltage (120v or 240v AC as applicable) and that the twist-lock plug is fully engaged.
4. Verify the load surface is clean, smooth, and free of holes, cracks, or excessive porosity that would prevent a proper vacuum seal.

Applying the Pads to a Load

1. Adjust the sliding pad mounts to match the dimensions of the load, positioning them for balanced coverage. No tools are required.
2. Activate the power system to generate vacuum flow.
3. Position the lifter on the load surface, ensuring all pads make full contact with the material.
4. Monitor the vacuum gauge — the indicator must be in the green zone before attempting any lift. On optimal surfaces, full vacuum is achieved in approximately 2 seconds.
5. On porous or less-than-optimal surfaces, allow additional time and verify the gauge remains stable in the green zone.

Lifting and Moving the Load

1. Confirm the vacuum gauge is in the green zone immediately before lifting.
2. Use the control handles in the most ergonomic position for your stance and task.
3. Lift and move the load smoothly, monitoring the vacuum gauge continuously throughout the operation.
4. In case of power failure, the vacuum system is designed to retain sufficient vacuum to hold the load; lower the load to a safe surface immediately and investigate the cause before resuming work.

Tilting the Load

1. Confirm the vacuum gauge remains in the green zone before initiating any tilt.
2. Use the Quadra-Tilt linkage to assist the 90° rotation of the load between the flat (horizontal) and upright (vertical) positions.
3. The tilt mechanism will automatically hold the load in both the fully upright and fully flat positions once reached — do not release the load until it is confirmed stable and fully supported.

Releasing the Load

1. Lower the load fully onto a stable, supported surface before releasing.
2. Activate the blow-off release to reverse airflow through the pads, breaking the vacuum seal instantly and cleanly.
3. Confirm all pads have released before moving the lifter away from the load.

After Use and Storage

1. Power down the lifter and disconnect from the power source.
2. Clean vacuum pads and inspect for damage before storage.
3. Store the lifter in a clean, dry location protected from physical damage.
4. Record any observed defects and service the lifter before next use if any are found.

Technical Specifications

Frequently Asked Questions

Q: What is the difference between the wide pad spread and narrow pad spread configurations?
A: Wide and narrow pad spread configurations determine the default spacing between pad mount positions on the frame, allowing the lifter to better match the width of the material being handled. Both configurations use the same sliding adjustable pad mounts for fine-tuning within their respective range.

Q: Can this lifter be used with compressed air instead of AC power?
A: Yes. The MTA8LP6FAIR variant uses an air (venturi) power system compatible with compressed air supplies commonly available in production facilities and fabrication shops. Note that specifications for the air model may differ from the AC version; contact a Technical Sales Representative for details.

Q: Is the MTA8LP6F suitable for porous stone surfaces such as certain natural stones?
A: Performance on porous or textured surfaces depends on the degree of porosity. On optimal smooth surfaces, vacuum is achieved in approximately 2 seconds. On less ideal surfaces, vacuum level may be reduced — always confirm the gauge is in the green zone before lifting, and consult the product instructions or contact Wood's Powr-Grip for guidance on specific materials.

Q: What optional accessories are available for this lifter?
A: Available options include: Individual Pad Shutoffs (93011) for handling varied load sizes and shapes; Vacuum Loss Warning Buzzer (93780AM) for audible low-vacuum alerts; 2" (5 cm) Pad Spacers (97461) for loads with surface obstructions such as window mullions; voltage adaptation for non-standard AC voltages; and alternative pad frame dimensions and configurations for specialized load geometries.

Q: What should I do if the vacuum gauge drops into the red zone during a lift?
A: Lower the load to a safe, supported surface immediately. Do not continue the lift with insufficient vacuum. Inspect all pads for damage, contamination, or improper contact with the load surface. Perform a leak test per the troubleshooting documentation before resuming operations.

Q: Does this lifter comply with industry safety standards?
A: Yes. The MTA8LP6F is designed to ASME B30.20 standards (BTH-1 Design Category "B", Service Class "0"), which are industry standards established by the American Society of Mechanical Engineers (ASME) and published by the American National Standards Institute (ANSI).