Cartridge Caulking Guns
JS-8622-A Heavy duty 3-bearing silicone gun for catridge silicone sealant
A three-bearing cartridge gun at 750 g, built from thickened iron plate with manual welding, 180 KG push force and a 250 KG tolerance at 15:1.
Product Overview
A three-bearing cartridge gun at 750 g, built from thickened iron plate with manual welding, 180 KG push force and a 250 KG tolerance at 15:1. It is the heaviest-duty cartridge gun in the range and the only one here with bearings, which is why the tolerance margin is 39 percent rather than 25.
Key benefits
Why Buyers Choose This Model
Three Bearings On A Cartridge Gun
Bearings at the friction points reduce the effort needed for the same output. On cartridge guns that is unusual; it is standard on our sausage range and this model brings it across.
250 KG Tolerance At 15:1
The highest frame tolerance in the cartridge range, on the lowest drive ratio. That combination is deliberate: maximum force, maximum margin, at the cost of volume per squeeze.
Thickened Iron Plate, Manually Welded
Thickened iron plate reinforced with manual welding rather than machine spot welds, which is what carries that tolerance figure.
Two-Material Handle
A plastic sleeve on the front handle and a soft silicone sleeve on the rear, so the hand taking the load gets the softer grip.
Application scenarios
Where It Is Used
- Stiff structural and polyurethane sealant from cartridges
- Cold-weather work at the top of the force range
- Crews that have bent lighter frames before
- The ceiling of an own-brand cartridge range
Who it is for
The Buyers This Model Suits
Structural Sealant Applicators
Works with products a 120 KG frame cannot move reliably, and needs the low ratio for pressure.
Buyers Replacing Failed Guns
Has had frames bend and is buying on tolerance rather than on price.
Distributors Needing A Flagship
Wants a visible top of range with a mechanical reason for the price, not a colour change.
Problems it solves
What It Fixes
Sealant That Will Not Move
180 KG at 15:1 puts more pressure on the cartridge than anything else in this category.
Frames That Have Already Failed Once
A 250 KG tolerance on a 180 KG working force is the largest margin in the cartridge range.
Trigger Effort At High Force
The three bearings are why 180 KG does not feel like 180 KG at the hand.
Grip Slipping Under Load
Plastic front sleeve and soft silicone rear sleeve, matched to which hand carries the force.
Technical features
How It Is Built
Sturdy Gun Body
Constructed using thickened iron plates and reinforced with manual welding, ensuring durability and a prolonged lifespan.
Full Aluminum Alloy Handle
The handle is crafted from full aluminum alloy, providing a lightweight yet sturdy user experience.
Superb Tactile Design
The front handle is equipped with a plastic sleeve, while the rear handle features a soft silicone sleeve, ensuring exceptional tactile comfort.
Robust Alloy Push Rod
Equipped with a robust alloy push rod, enhancing stability and durability when dispensing caulk.
Drip Prevention Function
The caulking gun incorporates a drip prevention function, effectively reducing glue wastage and maintaining a clean construction site.
Three-Bearing Design
JS8622-A caulking gun is equipped with three bearings, offering a smoother and more efficient caulking experience, thereby improving construction efficiency.
Specifications
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 |
|---|---|
| Packing | 1PC/ poly bag, 20pcs/ CTN |
| Color | green, or customized |
| Carton Size | 67*39*30 |
| Push Force | Designed with excellence, the gun body provides 180KG thrust force, handling various caulking tasks |
| Maximum Tolerance | 250KG |
| Drive Ratio | 15:1 |
| Colour options | green, or customized |
| Packing | 1PC/ poly bag, 20pcs/ CTN |
| Minimum order | 2000pcs for a customised version |
| Customisation | Colour, packing method, carton appearance and logo |
Materials and manufacturing
How This Model Is Made
Parts for the JS-8622-A 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.
Use guide
Getting The Best Out Of It
Step 1
Load with the rod fully retracted; at 15:1 the first stroke builds pressure quickly.
Step 2
Hold the front handle over the plastic sleeve and the rear over the silicone sleeve.
Step 3
Work at a slower travel speed than a high-ratio gun, because each squeeze delivers less volume.
Step 4
Use the anti-drip function at every pause rather than only at the end of a cartridge.
Step 5
Keep the rod and bearings clean; grit in a bearing undoes the advantage they provide.
Comparison
How It Compares In Our Range
This is the top of the cartridge range. The comparison worth making is against the sausage equivalents.
| JS-8606 | 160 KG with 220 KG tolerance at 538 g, lighter and cheaper without bearings. |
|---|---|
| JS8622-B | The sausage-pack equivalent: three bearings, 180 KG, 220 KG tolerance, 25:1, 850 g. |
| JS8632 | 270 KG at 18:1 with four bearings and a 350 KG tolerance, if you need more still. |
FAQ
JS-8622-A Questions
Why is the drive ratio only 15:1?
Because this model is built for force, not for volume. A low ratio gives more mechanical advantage in pressure, which is what stiff structural sealant needs.
What difference do the three bearings make?
They replace sliding friction with rolling friction at the rod, so trigger effort drops for the same output. On a 180 KG gun that is what makes it usable for a full shift.
Is this the strongest cartridge gun you make?
By frame tolerance, yes, at 250 KG. The JS8632 delivers more push force at 270 KG with a 350 KG tolerance, with four bearings and a thickened aluminium tube.
What are the full ratings?
180 KG push force, 250 KG maximum tolerance, 15:1 drive ratio, 750 g net weight. Stock colour is green.
How is it packed?
One piece per poly bag, 20 pieces per master carton at 67 x 39 x 30 cm. Minimum order 2,000 pieces customised.
Related products
Other Models In Cartridge Caulking Guns
Industries
Trades That Use This Model
Glass And Curtain Wall
Sealant guns and vacuum lifters for crews who handle and seal glass all day
Window And Door Manufacturing
Glazing, perimeter foaming and gap filling for window and door plants and installers
Construction Sealing And Waterproofing
Cartridge, sausage and powered guns for joint sealing and waterproofing trades
Further reading
Guides That Cover This Model
How To Read Caulking Gun Force Ratings
Push force, maximum tolerance and drive ratio describe three different things. Confusing them is the most common reason a gun fails in the field.
Cartridge Or Sausage Which Sealant Gun To Stock
Sausage packs cut cost per litre and packaging waste; cartridges are simpler and universally stocked. The right answer depends on who your customer is.
A Private Label Caulking Gun Specification Checklist
Everything a factory needs from you before an own-brand run, in the order it gets asked, so the quotation comes back once rather than four times.
Quote The JS-8622-A
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.