Airtac JSI Series Standard Cylinder JSI50X80
The AirTAC Airtac JSI Series Standard Cylinder JSI50X80 is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 80mm stroke, G1/4 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.
- BoreØ50 mm
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM18×1.5
- CushionAdjustable, 20.5 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 JSI50X80
Delivering 982 N of push force at 0.5 MPa, the AirTAC JSI50X80 is a double-acting JIS-standard profile cylinder built for tight machinery layouts. It is noticeably shorter and more compact than an ISO 15552 cylinder of the same 50 mm bore, saving valuable space without sacrificing power. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life.
Because this specific SKU lacks the -S magnet option, it cannot accept CMSE or DMSE position switches. For sizing real tasks, plan for about 589 N of actual work at 0.5 MPa, which safely lifts a 50 kg load vertically with a 2:1 margin. The unit features a G1/4 port, an M18x1.5 rod thread, and adjustable air cushions at both ends to smoothly decelerate the piston.
Airtac JSI Series Standard Cylinder JSI50X80 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI50X80 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 JSI50X80
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×80 | 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 JSI50X80 Is Used
Package Diverting
Pushes small to medium cartons off a sorting line using 982 N of force, fitting neatly into tight transfer gaps.
Clamp Actuation
Secures aluminum extrusions during a cutting operation, providing reliable 50 kg vertical clamping pressure.
Component Insertion
Presses bearings into housings on an assembly cell, utilizing the 80 mm stroke and end-of-stroke cushions.
Is the Airtac JSI Series Standard Cylinder JSI50X80 the Right Cylinder?
When sizing this 50 mm bore model, compare it against the adjacent JSI series options. If 982 N of push at 0.5 MPa is excessive for your application, step down to the 40 mm bore which provides 628 N; if you need more muscle, the 63 mm bore offers 1559 N. For vertical or suspended loads, remember that a standard cylinder drifts when air is lost or the valve is centered. The adjustable cushion only decelerates the piston near stroke end and will not act as a brake, so install an external rod lock or a pilot-operated check valve to secure the load. Since this 80 mm stroke is relatively short, side-load concerns are minimal, but always ensure rigid mounting using LB foot, FA/FB flange, or TC trunnion brackets.
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 JSI50X80 FAQ
The 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa, or 1374 N push and 1154 N pull at 0.7 MPa. The theoretical maximum force is 200 kgf at 1.0 MPa. It uses a G1/4 air port and features a 20 mm piston rod with an M18x1.5 thread.
No, this specific SKU does not include the -S magnet, so it cannot accept CMSE or DMSE switches. You would need the JSI50X80-S variant to utilize the side sensor 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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