Airtac JSI Series Standard Cylinder JSI63X270S
The AirTAC Airtac JSI Series Standard Cylinder JSI63X270S is a genuine double acting JIS-standard air cylinder with a Ø63mm bore and 270mm 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.
- BoreØ63 mm
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM18×1.5
- 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 JSI63X270S
Delivering 1559 N of push force at 0.5 MPa, the AirTAC JSI63X270S is a JIS-standard profile cylinder engineered to be noticeably shorter than an ISO 15552 unit of the same 63 mm bore. This space-saving design pairs a hard-anodized aluminum extruded barrel with a two-way piston seal that retains grease for low-friction longevity. Because this SKU includes the -S magnet, you can drop CMSE or DMSE sensors directly into the side grooves for position detection.
With a 270 mm stroke and G3/8 ports, it is well-suited for moderate-load positioning tasks. Plan for roughly 935 N of real work at 0.5 MPa, which translates to lifting about 79 kg vertically with a 2:1 safety margin. The adjustable air cushions at both ends absorb end-of-stroke impact, ensuring smooth operation across the 30-800 mm/s speed range.
Airtac JSI Series Standard Cylinder JSI63X270S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI63X270S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 JSI63X270S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×270 | 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 JSI63X270S Is Used
Packaging Line Diverter
Handles the 1402 N pull force required to retract sorting gates on high-speed packaging conveyors, fitting neatly into tight transfer zones.
Palletizing Stopper
Acts as a compact end-stop for 79 kg pallet loads during vertical lift operations, using the 270 mm stroke to clear the path for the next unit.
CNC Fixture Clamp
Secures mid-weight castings inside machining centers, leveraging the hard-anodized barrel to resist workshop wear while providing precise 0.7 MPa clamping.
Is the Airtac JSI Series Standard Cylinder JSI63X270S the Right Cylinder?
When sizing this 63 mm bore, stepping down to a 50 mm bore drops the 0.5 MPa push force to 982 N, while stepping up to an 80 mm bore raises it to 2513 N. For this 270 mm stroke, ensure your guiding mechanism handles any side loads to prevent rod bending, as the piston rod is strictly for linear thrust. Remember that air loss or a centered valve will cause the piston to drift; the cushion only decelerates the stroke end and will not hold the load. For suspended loads, install an external rod lock or a pilot-operated check valve. The included -S magnet ensures compatibility with CMSE and DMSE switches.
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 JSI63X270S FAQ
This 63 mm bore cylinder features a G3/8 port and an M18x1.5 rod thread. It generates 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push and 1962 N pull at 0.7 MPa, with a theoretical maximum of 318 kgf at 1.0 MPa.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore. It uses an extruded aluminum barrel without external rods, and the -S suffix means it has a built-in magnet for CMSE or DMSE sensors.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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