Airtac JSI Series Standard Cylinder JSI50X480S
The AirTAC Airtac JSI Series Standard Cylinder JSI50X480S is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 480mm 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
- Stroke480 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 JSI50X480S
Delivering 982 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 50 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. Because this SKU includes the -S magnet, you can drop CMSE or DMSE reed and electronic switches directly into the side grooves for position sensing. Plan for about 589 N of real work at 0.5 MPa, which translates to lifting roughly 50 kg vertically with a 2:1 safety margin. The unit features a G1/4 port, an M18x1.5 rod thread, and adjustable air cushions at both ends to smooth out deceleration.
Operating between 0.15 and 1.0 MPa at speeds of 30-800 mm/s, the NBR piston seal and TPU buffer gasket handle temperatures from -20 to +70 C. The generous 480 mm stroke makes it highly suitable for extended reach tasks, though at this length you should support the load with external guides to prevent rod bending and premature seal wear.
Airtac JSI Series Standard Cylinder JSI50X480S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI50X480S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 480 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 JSI50X480S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×480 | 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 JSI50X480S Is Used
Packaging Line Diverter
Uses the 480 mm stroke to push cartons between adjacent conveyor lanes, relying on the 982 N push force to shift heavy boxes smoothly.
Palletizing Push-Off
Sweeps layered products onto a waiting pallet, where the compact JIS profile saves floor space and the -S magnet confirms the fully extended position.
Test Fixture Door
Opens and closes large safety guards on automated test benches, benefiting from the adjustable cushions to prevent slamming at stroke ends.
Is the Airtac JSI Series Standard Cylinder JSI50X480S the Right Cylinder?
When sizing this 50 mm bore, stepping down to a 40 mm version drops the 0.5 MPa push force to 628 N, while moving up to a 63 mm bore increases it to 1559 N. If your application requires the piston to stay put after a loss of air pressure or when a valve is centered, note that the standard air cushion only decelerates the rod near the stroke end and will not act as a lock; you will need an external rod lock or a pilot-operated check valve to hold the load safely. Furthermore, with the extended 480 mm stroke, side-load forces are amplified, so incorporating an external guide rail is strongly recommended to prevent rod bending and uneven seal wear.
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 JSI50X480S FAQ
This 50 mm bore cylinder delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push and 1154 N pull at 0.7 MPa, with a theoretical maximum of 200 kgf at 1.0 MPa. It uses a G1/4 air port and features an M18x1.5 rod thread.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 50 mm bore, giving you a space-saving footprint without sacrificing the 480 mm stroke.
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Standard models are processed and dispatched in 3-5 business days.
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