6" Vertical Hand Cup For Flat to Curved Surfaces - Pack of 4

Wood's Powr-Grip LJ6VH  6" Vertical Metal Handle Hand Cup for Flat and Curved Nonporous Surfaces (70 lbs / 32 kg) Pack of 4

The Wood's Powr-Grip LJ6VH is a compact, professional-grade vertical vacuum hand cup engineered for the safe lifting and handling of flat and curved nonporous surfaces weighing up to 70 lbs (32 kg). Featuring a 6" (15 cm) standard rubber suction pad, an all-metal handle and plunger, and a minimum curved surface radius rating of 12" (305 mm), the LJ6VH is purpose-built for automotive glass installation, windshield replacement, and other applications where a smaller, maneuverable cup is required to work in tight spaces or on tightly curved surfaces. Sold as a Pack of 4 (SKU: 91380, Model: LJ6VH), this kit supports multi-cup team lifts and provides redundant tooling for high-volume auto glass and glazing operations. The LJ6VH is manufactured by Wood's Powr-Grip, the industry standard in professional vacuum lifting equipment.

Compared to larger-format hand cups such as the N6450 (10" pad, 175 lb capacity), the LJ6VH is optimized for lighter, more maneuverable handling tasks where pad size and cup profile must fit within confined installation areas — such as windshield frames, door glass channels, and curved architectural glass with tighter radii. The all-metal handle and plunger construction (vs. plastic plunger on some models) provides maximum durability for repeated daily use in automotive service environments. The included vacuum pad protector — rather than a full carrying case — reflects the compact, tool-belt-friendly form factor of this cup.

Key Features & Benefits

Flat and Curved Surface Compatibility (Min. 12" Radius)

The LJ6VH is rated for both flat and curved smooth, nonporous surfaces, with a minimum curved surface radius of 12" (305 mm) — tighter than the N6450’s 13" minimum, making it suitable for more tightly curved automotive glass profiles including windshields, rear windows, and door glass. This dual-surface capability makes it the correct single tool for auto glass technicians who handle a variety of glass shapes throughout the workday. Always confirm the surface radius before use on curved applications.

All-Metal Handle and Plunger

Both the handle and plunger are constructed from metal, providing superior structural rigidity and long-term durability compared to models with plastic plungers. For automotive glass technicians and glaziers using hand cups repeatedly throughout the day, all-metal construction resists wear, deformation, and failure under sustained use. The metal plunger also delivers more consistent vacuum engagement and release action over the tool’s service life.

6" Standard Rubber Suction Pad (Model LJ6)

The 6" (15 cm) pad diameter is optimized for smaller glass panels, automotive glass, and applications where a larger pad would not fit within the available surface area or installation clearance. The standard rubber compound (LJ6) maintains flexibility and seal integrity across the rated operating temperature range. Replacement pads are available separately through Wood's Powr-Grip authorized distributors.

Fast Attach and Release Mechanism

The quick-engage vacuum mechanism allows technicians to attach and release the cup rapidly without tools, supporting high-throughput workflows in auto glass shops and on glazing job sites. Faster cycle times per lift improve productivity when handling multiple panels in sequence, such as during windshield replacement operations. The release action is controlled and deliberate, preventing accidental disengagement during a lift.

Red-Line Vacuum Loss Indicator

The built-in red-line indicator provides a continuous visual warning if vacuum pressure drops significantly during a lift, giving the operator an immediate alert before load failure can occur. This is especially important in automotive glass work, where a dropped windshield or door glass can cause serious injury and costly damage. The indicator supports safe lifting practices and helps technicians confirm seal integrity before and during every lift.

Vacuum Pad Protector Included — Pack of 4

Each LJ6VH ships with a vacuum pad protector to keep the suction pad clean and protected during storage and transport, extending rubber seal life and maintaining consistent vacuum performance. The pack-of-4 configuration provides the redundant tooling needed for multi-cup team lifts on large or heavy automotive glass, and ensures replacement cups are on hand when a pad requires service. The compact form factor is suited for tool bags, service vehicles, and shop storage.

Common Applications

Windshield Installation and Replacement

The LJ6VH is specifically recommended for windshield handling — its 12" minimum radius rating accommodates the curvature of most automotive windshields, and the compact 6" pad fits within the usable surface area of windshield glass without overlapping trim or frame edges. Auto glass technicians use multiple cups from the pack-of-4 kit for controlled two-point lifts on full windshield panels.

Automotive Door and Side Glass Handling

Door glass, quarter glass, and rear side windows present curved profiles and limited surface area that require a smaller, maneuverable cup. The LJ6VH’s 6" pad and compact profile allow secure attachment in areas where larger cups cannot achieve a full seal or would contact surrounding trim.

Rear Window and Backglass Replacement

Rear windows and backglass panels often feature compound curvature and heating element grids that limit available pad contact area. The LJ6VH’s smaller pad can be positioned on smooth, unobstructed areas of the glass surface to achieve a reliable vacuum seal for controlled removal and installation.

Curved Architectural Glass Handling

For architectural glazing applications involving curved glass with radii at or above 12" (305 mm), the LJ6VH provides a compact alternative to larger curved-surface cups when working in confined spaces or on smaller glass panels. It is effective on curved storefront glass, curved skylights, and bent glass feature elements.

Flat Glass Panel Handling (Light Duty)

The LJ6VH handles flat, smooth, nonporous glass and panel surfaces up to 70 lbs (32 kg), making it suitable for light-duty flat glass handling tasks in auto glass shops and glazing operations where a smaller cup is preferred for maneuverability. For heavier flat glass applications, the N5450 or N6450 provide higher load ratings.

Multi-Cup Team Lifts

The pack-of-4 configuration is designed for coordinated multi-cup lifts where two or more technicians each use one or two cups to handle a single large or heavy glass panel. This approach distributes the load across multiple vacuum points, improving stability and control during installation of large automotive glass or architectural panels.

Compatible Materials

• Automotive windshields (curved, min. 12" radius)
• Automotive door glass, quarter glass, and rear side windows
• Rear windows and backglass panels — smooth, nonporous surface areas only
• Curved architectural glass (min. 12" / 305 mm radius)
• Flat plate glass and float glass (light duty, up to 70 lbs)
• Tempered and laminated safety glass — smooth, nonporous face
• Smooth polished stone and tile (flat or curved, within radius rating)
• Smooth painted or coated metal panels (flat or curved, within radius rating)
• Any smooth, nonporous surface with min. 12" (305 mm) radius and sufficient material thickness

Not compatible with: rough, textured, or porous surfaces; surfaces with radius tighter than 12" (305 mm); thin or fragile materials that could fracture under vacuum stress; surfaces with heating elements, frit bands, or obstructions in the pad contact area; concrete, brick, unpolished stone, wood, or drywall.

Product Documents

• LJ6VH Suction Cup Instructions & Specifications (PDF)

Application Instructions

Step 1: Surface and Material Assessment

1. Confirm the surface is smooth and nonporous — do not proceed on rough, textured, or porous surfaces.
2. For curved surfaces, confirm the radius is 12" (305 mm) or greater.
3. Identify a clean, unobstructed pad contact area — avoid heating element grids, frit bands, adhesive residue, or trim overlap.
4. Verify the panel weight does not exceed 70 lbs (32 kg) per cup, or distribute load across multiple cups for heavier panels.

Step 2: Pad Inspection and Preparation

1. Inspect the LJ6 suction pad for cuts, cracks, hardening, or contamination. Replace if damaged.
2. Clean the pad contact area on the glass surface — remove dust, oil, moisture, and debris.
3. Ensure the pad is at operating temperature (above 10°F / -12°C) before use.

Step 3: Attaching the Cup

1. Center the 6" pad on the target surface area, ensuring full pad perimeter contact with the glass.
2. Engage the vacuum mechanism using the metal handle/plunger until firm resistance is felt.
3. On curved surfaces, additional pumping strokes may be required to achieve full vacuum — pump until the red-line indicator confirms a stable seal.
4. Apply a controlled test load (firm downward pull) to verify seal integrity before committing to the full lift.

Step 4: Lifting, Positioning, and Release

1. Lift smoothly — avoid sudden jerking motions that can break the vacuum seal.
2. Monitor the red-line indicator continuously throughout the lift and during positioning.
3. For multi-cup lifts, coordinate with the second operator to lift and lower simultaneously.
4. Lower the panel fully to a stable surface or into its final position before releasing the vacuum.
5. Engage the release mechanism slowly and in a controlled manner.
6. Clean the pad after use and store with the vacuum pad protector.

Technical Specifications

Safety Data Summary

Hazard Information

• Vacuum loss during a lift can result in sudden load drop, causing serious injury or property damage — especially critical when handling automotive glass near vehicle occupants or bystanders
• Overloading beyond 70 lbs (32 kg) per cup may cause sudden cup release without warning
• Use on surfaces with radius tighter than 12" (305 mm) will prevent full pad seal and significantly increases drop risk
• Use on thin or fragile materials risks fracture under vacuum stress — not rated for thin glass
• Damaged or contaminated suction pads reduce vacuum integrity and must be replaced before use
• Operating outside the rated temperature range (10°F–120°F) may degrade rubber pad performance
• Do not use above 5,000 ft (1,500 m) elevation

Personal Protective Equipment

• Safety glasses or face shield when handling glass panels
• Cut-resistant gloves rated for automotive or architectural glass handling
• Steel-toed safety footwear
• Hard hat when working in overhead environments

Safe Handling

• Always assess surface radius before attaching to curved glass — minimum 12" (305 mm) required
• Inspect the pad and vacuum indicator before each lift — replace damaged pads immediately
• Never exceed the rated 70 lbs (32 kg) load capacity per cup
• Monitor the red-line indicator continuously — lower the load immediately if vacuum loss is detected
• Coordinate multi-cup lifts with all operators before lifting — lift and lower simultaneously
• Do not use on wet, oily, frosted, or contaminated surfaces
• Store with the vacuum pad protector to maintain pad condition between uses

Frequently Asked Questions

Q: Is the LJ6VH suitable for windshield installation?
A: Yes — the LJ6VH is specifically recommended for windshield handling. Its 12" minimum radius rating accommodates most automotive windshield curvatures, and the compact 6" pad fits within the usable glass surface area. The pack-of-4 configuration supports two-technician, two-cup lifts for full windshield panels.

Q: What is the minimum surface radius the LJ6VH can handle?
A: The LJ6VH is rated for curved surfaces with a minimum radius of 12" (305 mm). This is slightly tighter than the N6450’s 13" minimum, making it suitable for more tightly curved automotive glass profiles. Do not use on surfaces with radius below 12".

Q: How does the LJ6VH differ from the N6450?
A: The LJ6VH has a smaller 6" pad (vs. 10" on the N6450), a lower 70 lb capacity (vs. 175 lb), an all-metal plunger (vs. unspecified on N6450), a tighter 12" minimum radius rating (vs. 13"), and is sold as a pack of 4. It is optimized for automotive glass and lighter curved-surface applications where a compact, maneuverable cup is required.

Q: Can I use one cup to lift a full windshield?
A: Only if the windshield weighs 70 lbs (32 kg) or less. For heavier windshields, use two or more cups from the pack-of-4 kit in a coordinated two-technician lift, distributing the load across multiple vacuum points. Always confirm the glass weight before selecting the number of cups for a lift.

Q: What replacement pad does the LJ6VH use?
A: The LJ6VH uses the LJ6 standard rubber pad (6" diameter). Replacement pads are available separately through Wood's Powr-Grip authorized distributors.

Q: Is this product made to order?
A: Yes. This product is made to order and all sales are final. Please confirm your surface type, radius, and load requirements before placing your order.

California Residents: ⚠️ WARNING: Cancer and/or Reproductive Harm — www.p65Warnings.ca.gov