Airtac JSI Series Standard Cylinder JSI50X500S
The AirTAC Airtac JSI Series Standard Cylinder JSI50X500S is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 500mm 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
- Stroke500 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 JSI50X500S
Delivering 982 N of push force at 0.5 MPa, the AirTAC JSI50X500S is a double-acting JIS-standard profile cylinder built for compact machinery. Its extruded hard-anodized aluminum barrel omits external rods, making the unit notably shorter and more compact than an ISO 15552 cylinder of the same 50 mm bore. The internal two-way piston seal retains grease to ensure long, low-friction operation across the 500 mm stroke. Because this SKU includes the -S magnet, CMSE or DMSE position switches drop directly into the side sensor grooves.
For practical sizing, 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 cylinder operates at 30-800 mm/s, accepts a G1/4 air port, and uses an M18x1.5 rod-end thread. Note that a plain actuator like this will drift if air is lost or the valve is centered; the adjustable 20.5 mm cushions at both ends only decelerate the piston near stroke end rather than locking the load.
Airtac JSI Series Standard Cylinder JSI50X500S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI50X500S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 500 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 JSI50X500S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×500 | 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 JSI50X500S Is Used
Packaging Line Diverter
Shifts heavy cartons across a 500 mm belt gap using the 982 N push force, with the -S magnet confirming end-of-stroke positions for the PLC.
Vertical Parts Lift
Raises 50 kg tote bins between machinery levels, relying on the compact JIS profile to fit within tight vertical lift stations.
Woodworking Clamp
Secures timber stock for routing operations, where the hard-anodized barrel resists workshop debris and the adjustable cushion softens the 500 mm extension.
Is the Airtac JSI Series Standard Cylinder JSI50X500S the Right Cylinder?
When sizing this 50 mm bore, stepping down to a 40 mm bore drops the 0.5 MPa push force to 628 N, while stepping up to a 63 mm bore raises it to 1559 N. Because this model features a 500 mm stroke, external guide rails should be used to prevent rod bending and premature seal wear caused by side loads. If the machinery requires the piston to hold its vertical position during an air loss event, add an external rod lock or a pilot-operated check valve, as the standard cushioning provides deceleration only. The -S magnet on this unit is correctly specified for triggering CMSE or DMSE sensors.
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 JSI50X500S FAQ
At 0.5 MPa it provides 982 N push and 825 N pull. At 0.7 MPa it provides 1374 N push and 1154 N pull. The theoretical maximum is 200 kgf at 1.0 MPa. The air port size is G1/4.
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, saving valuable space on tight machines without sacrificing the 500 mm stroke.
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Standard models are processed and dispatched in 3-5 business days.
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