Airtac JSI Series Standard Cylinder JSI100X25
The AirTAC Airtac JSI Series Standard Cylinder JSI100X25 is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 25mm 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
- Stroke25 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 JSI100X25
Delivering 3927 N of push force at 0.5 MPa, this double-acting 100 mm bore cylinder handles heavy industrial shifting with ease. Built to JIS standards, its extruded hard-anodized aluminum profile is purposefully shorter and more compact than an equivalent ISO 15552 unit, saving valuable machine space. The barrel design omits external rods entirely, while a two-way piston seal retains grease for a long, low-friction service life.
Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position sensors. For real-world sizing, plan for roughly 2356 N of actual work at 0.5 MPa, which safely lifts about 200 kg vertically with a 2:1 margin. Air enters via a G1/2 port, and adjustable 33 mm cushions at both ends decelerate the 32 mm rod smoothly at stroke ends.
Airtac JSI Series Standard Cylinder JSI100X25 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X25 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 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 JSI100X25
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | 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 JSI100X25 Is Used
Injection Mold Clamping
Provides intense 3927 N holding force at 0.5 MPa to secure heavy injection mold halves during the short 25 mm closing cycle.
Press Stub Ejection
Ejects dense metal stubs from a hydraulic press bed, using its 200 kg safe vertical lift capacity to clear the forming area rapidly.
Pallet Brake Actuation
Drives heavy-duty mechanical brake pads against conveyor pallets, using the compact JIS profile to fit within tight transfer station frames.
Is the Airtac JSI Series Standard Cylinder JSI100X25 the Right Cylinder?
When sizing this 100 mm bore, compare it directly against its neighbors: a 125 mm bore yields 6136 N of push at 0.5 MPa for heavier demands, while an 80 mm bore provides 2513 N if your load is lighter. This JSI100X25 provides a robust 3927 N push and 3574 N pull at 0.5 MPa, making it ideal for high-force, short-throw clamping.
Remember that a standard pneumatic cylinder drifts when air is lost or the valve is centered, as the cushions only decelerate the piston and act as neither a lock nor a brake. To hold a load securely in place, install an external rod lock or a pilot-operated check valve. For position feedback on future builds, select the -S magnet variant to enable side-groove 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 JSI100X25 FAQ
The 100 mm bore generates a push of 3927 N and a pull of 3574 N 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 explicitly shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore. It achieves this space saving through an extruded aluminum barrel with no external rods, while still offering adjustable air cushions at both ends.
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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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