Airtac JSI Series Standard Cylinder JSI100X250STC
The AirTAC Airtac JSI Series Standard Cylinder JSI100X250STC is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 250mm stroke, G1/2 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.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM26×1.5
- CushionAdjustable, 33 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 JSI100X250STC
Delivering 3927 N of push force at 0.5 MPa, the AirTAC JSI100X250STC is a double-acting JIS-standard profile cylinder built for heavy machinery. It is explicitly shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore, saving valuable space on dense production lines. 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 SKU includes the -S magnet, CMSE and DMSE reed or electronic switches drop directly into the side grooves for precise end-of-stroke detection.
For real-world sizing, plan for about 2356 N of actual work at 0.5 MPa, which safely lifts roughly 200 kg vertically with a 2:1 margin. The unit features a 32 mm carbon steel rod with an M26x1.5 thread, a G1/2 air port, and 33 mm adjustable air cushions at both ends to smooth out deceleration. It operates at 30-800 mm/s across a 0.15-1.0 MPa pressure range.
Airtac JSI Series Standard Cylinder JSI100X250STC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X250STC |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M26×1.5 |
| 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, 33 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3525 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 JSI100X250STC
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSI100X250STC Is Used
Stamping Press Feed
Pushes heavy metal blanks into a stamping press, utilizing the 3927 N push force to move steel sheets reliably into the die.
Pallet Stopper Gate
Acts as a robust 250 mm stroke stop gate on a heavy-duty conveyor, halting loaded pallets weighing up to 200 kg before a wrapping station.
Injection Mold Ejector
Drives a secondary ejection mechanism on a large plastic injection molding machine, clearing bulky fabricated parts from the mold cavity.
Is the Airtac JSI Series Standard Cylinder JSI100X250STC the Right Cylinder?
When sizing this 100 mm bore, stepping down to the JSI80X50 yields 2513 N of push at 0.5 MPa, while stepping up to the JSI125 provides 6136 N if your application requires extreme force. This model includes the -S magnet for CMSE/DMSE sensors and uses a TC trunnion mount, which allows pivoting articulation to accommodate lateral movement along the 250 mm stroke.
Remember that a standard pneumatic cylinder does not hold its load if air pressure is lost or the valve is centered, as the piston will drift and the air cushion only decelerates the rod near stroke end rather than acting as a lock. To suspend a load safely, install an external rod lock or a pilot-operated check valve. Furthermore, at a 250 mm stroke, ensure your mechanism includes external guide rails to prevent rod bending under heavy side loads.
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 JSI100X250STC FAQ
The 100 mm bore generates 3927 N push and 3574 N pull at 0.5 MPa, increasing to 5497 N push and 5003 N pull at 0.7 MPa, with a theoretical maximum of 801 kgf at 1.0 MPa. It uses a G1/2 air port, a 32 mm rod with an M26x1.5 thread, and operates at speeds of 30-800 mm/s.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore, making it ideal for space-constrained machinery. It is not dimensionally interchangeable with ISO 15552, but it offers similar heavy-duty performance in a smaller footprint.
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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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