
JS8642 Dual-Claw Vacuum Glass Suction Cup
The volume dual-claw lifter: 750 g, 90 KG horizontal and 70 KG vertical suction, in a thickened aluminium alloy body formed by integral die-casting.

Product Overview
The volume dual-claw lifter: 750 g, 90 KG horizontal and 70 KG vertical suction, in a thickened aluminium alloy body formed by integral die-casting. Reinforced plastic press button, thickened nitrile rubber pads, an enlarged cup with deeper grooves, and a metal baking-paint finish for wear resistance.





Why Buyers Choose This Model
Thickened Aluminium Integral Die-Casting
The main body is formed as one die-cast piece, giving high hardness and wear resistance. A one-piece body keeps both pads in the same plane, which is what a dual claw depends on.
Enlarged Cup With Deeper Grooves
A larger cup with deeper grooves provides enhanced suction power, safety and stability. Groove depth is what holds the vacuum when the panel flexes.
Thickened Nitrile Rubber Pads
Nitrile for oil, abrasion and heat resistance, thickened for strong suction, long-lasting adhesion and weather resistance.
Metal Baking Paint Finish
The baking-paint process gives high wear resistance and an appealing texture, and doubles as the anti-oxidation treatment on the aluminium.
Where It Is Used
- Transport and installation of glass and ceramic tile
- Two-handed panel positioning on site
- Glass shop handling of medium panels
- The core dual-claw model in a distributor range
The Buyers This Model Suits
Glazing And Tiling Crews
Handles panels too big for a single cup and too light to need a three-claw.
Glass Distribution
Moves panels between racks and vehicles all day, which is what the wear-resistant finish is for.
Distributors Needing A Volume Model
This is the tier most enquiries land on, between single cup and three claw.
What It Fixes
Single Cups On Panels Too Large
A single cup on a wide panel lets it pivot. Two claws control the rotation as well as the weight.
Pads Hardening And Releasing
Thickened nitrile is specified for weather resistance and long-lasting adhesion rather than for day-one grip.
Bodies Twisting Out Of Plane
An integral die-cast body keeps both pads coplanar, which is what stops one pad peeling first.
How It Is Built
Dual-Claw Design
The dual-claw design of the suction cup facilitates safe and stable transportation and installation of glass, tiles, and similar materials.
Vacuum Suction Principle
The vacuum is created when the press button is engaged, utilizing rubber’s sealing properties for effective lifting.
Die-Cast Aluminum Alloy Casing
The high-quality die-cast aluminum alloy casing enhances stability during operation.
Alloy Main Body
The main body is formed through a thickened aluminum alloy integral die-casting process, providing high hardness and wear resistance.
Reinforced Plastic Press Button
The reinforced plastic press button ensures ease of operation, secure locking, and durability.
Thickened Nitrile Rubber Pad
The thickened nitrile rubber pad maintains strong suction power, long-lasting adhesion, and weather resistance.
Enlarged Suction Cup Design
The larger suction cup with deeper grooves provides enhanced suction power, safety, and stability.
Ergonomic Widened Anti-Slip Handle
The widened anti-slip handle features an ergonomic design for a comfortable grip, specifically catering to men.
Published Figures For This Model
Every value below comes from our own product specification. Where a figure is not published we leave it out rather than estimating it.
| Net Weight | 750g |
|---|---|
| Horizontal Suction | 90KG |
| Vertical Suction | 70KG |
| Packing | 1PC/ inner box, 20pcs/ CTN |
| Color | yellow, golden, silver, or customized |
| Carton Size | 52*34*42 |
| Colour options | yellow, golden, silver, or customized |
| Packing | 1PC/ inner box, 20pcs/ CTN |
| Minimum order | 2000pcs for a customised version |
| Customisation | Colour, packing method, carton appearance and logo |
How This Model Is Made
Parts for the JS8642 are produced in our own workshops in Jinli Town, Zhaoqing. This model uses both routes: its moulded components come off our five horizontal and three vertical injection moulding machines, and its metal parts come off our fifteen automatic punching machines, nine automatic lathes and three welding machines. Tooling is designed and cut in our own mould room, which is why a change to this model does not queue behind another factory's schedule.
Quality Control
- Every model is weighed against its declared net weight during production, so the carton weight on your packing list matches what arrives.
- Stamped parts are produced in house on 15 automatic punching machines and 9 automatic lathes, so dimensional consistency is controlled at source rather than inspected on arrival.
- Moulded parts come off 5 horizontal and 3 vertical injection moulding machines running up to 10,000 mould open-and-close cycles per day, with tooling maintained in our own mould room.
- The quality management system was certified to ISO 9001:2015 in August 2023, with a certificate valid to 31 July 2026.
- Cartons are counted against the packing list as they are loaded into the container at our own factory door.
Certifications
The quality management system was certified to ISO 9001:2015 in August 2023, under standard GB/T19001-2016, for the manufacture and sale of glass caulking guns and sealant guns. The certificate on file runs to 31 July 2026; ask us for the current renewal status before relying on it. A TUV Rheinland assessment was obtained in 2016.
Customisation Options
- Aluminium Tube Anodizing And Colouring: More than 10 colours available; the surface can be given a frosted texture.
- Aluminium Tube Painting: Up to 10 colours with customisable patterns.
- Aluminium Tube Laser Engraving: Engraved logos, text and patterns on stamped fittings and aluminium tubes.
- Self-Adhesive Logo Labels: Applied to the product in the position the buyer specifies.
- Multi-Colour Logo Printing: Paint screen printing in any colour, with several colours printed at once.
- Tag And Product Screen Printing: Screen printed tags and product markings, multi-colour capable.
Getting The Best Out Of It
Step 1
Clean and dry the panel; the rating assumes a smooth, clean, non-porous surface.
Step 2
Seat both pads flat before pressing either button, so neither starts partly loaded.
Step 3
Draw both vacuums and confirm both hold before taking any weight.
Step 4
Release both before storage, and inspect the nitrile pads for hardening or embedded grit.
How It Compares In Our Range
The dual-claw family runs from 90 KG to 180 KG horizontal.
| JS8642-1 | Export version at 100 KG horizontal and 120 KG vertical, in black. |
|---|---|
| JS8642-4 | Extra heavy at 1000 g, 140 KG horizontal and 120 KG vertical. |
| JS8642-5 | Super heavy at 1000 g, 180 KG horizontal and 150 KG vertical. |
JS8642 Questions
What are the load ratings?
90 KG horizontal suction and 70 KG vertical suction, at 750 g net weight.
How does the vacuum work?
Pressing the button creates the vacuum, using the rubber pad's sealing properties to hold the panel. Both claws must be seated flat before either is pressed.
What is the body made of?
Thickened aluminium alloy formed through an integral die-casting process, with a die-cast aluminium casing and a reinforced plastic press button.
What colours are available?
Yellow, golden and silver as stock, plus custom colours. The metal baking-paint process gives the finish and the wear resistance.
How is it packed?
One piece per inner box, 20 pieces per master carton at 52 x 34 x 42 cm.
Trades That Use This Model
Glass And Curtain Wall
Sealant guns and vacuum lifters for crews who handle and seal glass all day
Tile And Stone Installation
Epoxy grout guns, pointing guns and slab lifters for tiling and stonework
Window And Door Manufacturing
Glazing, perimeter foaming and gap filling for window and door plants and installers
Guides That Cover This Model
Glass Suction Cup Load Ratings Explained
Horizontal and vertical suction are different numbers for good physical reasons. Reading the wrong one is how a lifter fails.
Planning MOQ Packing And Container Loading
How to build a mixed order from published carton dimensions, and what the minimum order quantity actually applies to.
Quote The JS8642
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.


