Airtac JSI Series Standard Cylinder JSI80X25SFB
The AirTAC Airtac JSI Series Standard Cylinder JSI80X25SFB is a genuine double acting JIS-standard air cylinder with a Ø80mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
- BoreØ80 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM22×1.5
- CushionAdjustable, 29 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac JSI Series Standard Cylinder JSI80X25SFB
Delivering 2513 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than an equivalent ISO 15552 unit of the same 80 mm bore. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the heterogeneous two-way piston seal retains grease for a long, low-friction service life. An FB front flange handles mounting, and the built-in -S magnet allows CMSE or DMSE switches to drop directly into the side grooves for position sensing.
For practical sizing, plan for around 1508 N of real work at 0.5 MPa, which translates to lifting about 128 kg vertically with a 2:1 safety margin. The unit features a 25 mm carbon steel rod with an M22x1.5 thread, G3/8 air ports, and 29 mm adjustable air cushions at both ends to smooth out stroke transitions. Operating speeds span 30-800 mm/s across a 0.15-1.0 MPa pressure range.
Airtac JSI Series Standard Cylinder JSI80X25SFB Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI80X25SFB |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M22×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSI Series Standard Cylinder JSI80X25SFB
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 80 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Where the Airtac JSI Series Standard Cylinder JSI80X25SFB Is Used
Short-Stroke Clamping
Ideal for holding heavy steel plates in a fabrication fixture, using the 2513 N push force to lock parts securely before welding.
Package Diverting
Provides a fast 25 mm jab to push heavy cartons off a main conveyor belt, benefiting from the compact profile to fit tight transfer gaps.
Pallet Stop Gate
Acts as a high-force stop gate on a roller conveyor, raising quickly to halt 100 kg pallets before a wrapping station.
Is the Airtac JSI Series Standard Cylinder JSI80X25SFB the Right Cylinder?
When sizing this 80 mm bore, stepping down to a 63 mm JSI yields 1559 N of push at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N, giving you clear force boundaries. The included FB flange supplies a robust front-mounting face, and the -S magnet is essential if your cycle requires CMSE or DMSE electronic or reed sensors. Because the 25 mm stroke is very short, side-load stress is minimal, but remember that a standard cylinder drifts if air pressure is lost or the valve is centered. To hold a load securely during an outage, add an external rod lock or a pilot-operated check valve, as the air cushions only decelerate the piston near the stroke ends.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSI Series Standard Cylinder JSI80X25SFB FAQ
At 0.5 MPa it provides 2513 N push and 2268 N pull. At 0.7 MPa it delivers 3518 N push and 3175 N pull. The theoretical maximum force is 513 kgf at 1.0 MPa. The air port size is G3/8, and the rod-end thread is M22x1.5.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 80 mm bore. Additionally, the -S designation means it has a built-in piston magnet, allowing CMSE or DMSE switches to be fitted into the side grooves for position detection.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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