Airtac JSI Series Standard Cylinder JSI100X250S
The AirTAC Airtac JSI Series Standard Cylinder JSI100X250S 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 JSI100X250S
Delivering 3927 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder handles heavy-duty positioning with ease. Its extruded hard-anodized aluminum barrel omits external rods, making the unit shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore. The two-way piston seal retains grease for a long, low-friction service life across demanding cycles.
Equipped with a built-in piston magnet (-S), it accepts CMSE or DMSE reed and electronic switches that drop directly into the side grooves. Plan for about 2356 N of real work at 0.5 MPa, which translates to lifting roughly 200 kg vertically with a 2:1 safety margin. The G1/2 port and 33 mm adjustable air cushions at both ends ensure smooth deceleration without sudden end-of-stroke impacts.
Airtac JSI Series Standard Cylinder JSI100X250S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X250S |
|---|---|
| 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 JSI100X250S
| 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 JSI100X250S Is Used
Injection Mold Clamping
Provides the 3927 N push force needed to secure mid-sized injection mold halves, utilizing the 250 mm stroke to clear the tooling during part ejection.
Heavy Pallet Diversion
Actuates a heavy-duty pusher arm on a packaging line, safely redirecting loaded pallets with its 200 kg vertical lift equivalent and compact profile.
Automated Storage Retrieval
Drives the extraction arm on an AS/RS shuttle, using the built-in magnet for precise CMSE sensor feedback to confirm part pickup at 250 mm extension.
Is the Airtac JSI Series Standard Cylinder JSI100X250S the Right Cylinder?
When sizing this 100 mm bore unit against its neighbors, consider that a smaller 80 mm JSI yields 2513 N push at 0.5 MPa, while the larger 125 mm version provides 6136 N. Choose this model when your load requires the 3927 N output and a 250 mm stroke. Because this SKU includes the -S magnet, it is fully ready for CMSE/DMSE position sensing.
Remember that a standard pneumatic cylinder drifts if air pressure drops or the valve is centered; the cushions only decelerate the piston near stroke ends and do not act as a brake. To suspend a load safely during an emergency stop, integrate an external rod lock or a pilot-operated check valve. For a 250 mm stroke, ensure your mounting arrangement—whether LB foot, FA/FB flange, or TC trunnion—adequately supports the rod against side-load bending.
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 JSI100X250S FAQ
This 100 mm bore cylinder features a G1/2 air port and an M26x1.5 rod thread. It generates 3927 N push and 3574 N pull at 0.5 MPa, 5497 N push and 5003 N pull at 0.7 MPa, with a theoretical maximum of 801 kgf at 1.0 MPa.
The JSI 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 hard-anodized aluminum barrel without external rods to save machine space while retaining heavy-duty performance.
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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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