Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S is a genuine double acting, double rod, adjustable stroke 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, double rod, adjustable stroke
- 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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S
The external stop screw lets you shorten the extend stroke by up to 30 mm, giving a usable range of 220 to 250 mm without swapping the actuator. Because the nominal 250 mm stroke is the maximum, you can fine-tune the end position perfectly during commissioning.
Built with an extruded hard-anodized aluminum barrel, the body is distinctly shorter and more compact than a same-bore ISO 15552 cylinder. Air connects via a G1/2 port, and the -S suffix means a built-in piston magnet is present for CMSE/DMSE switches that drop directly into the side grooves. Adjustable air cushions of 33 mm at each end absorb shock, though a plain cylinder drifts on air loss—the cushion only decelerates, so fit an external rod lock or pilot-operated check valve if you need to hold a load.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 | 3525 N | 3525 N |
| 0.7 MPa | 4935 N | 4935 N |
| Max (@1.0 MPa) | 719 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
Model Code: Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke 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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S Is Used
Press Fit Tuning
Dial in the exact 220 to 250 mm extend position for seating bearings without machining custom spacers or changing the actuator body.
Variable Transfer Stops
Adjust the extend stop on-site to handle different package sizes on a single line, using the 100 mm bore force to halt heavy pallets.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S the Right Cylinder?
The 30 mm adjustable window is ideal when you need to share one spare cylinder across several slightly different stroke variants or dial in a precise end position on the machine. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. The -S magnet supports CMSE/DMSE sensors for position feedback. Because the stroke is 250 mm, ensure adequate external guiding to prevent side-load damage to the rod seal.
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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-30S FAQ
At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa the push is 5497 N and pull is 5003 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
The 30 mm window is an external stop screw that shortens the extend stroke on-site from the 250 mm maximum down to 220 mm. The retract end remains fixed, allowing precise end-position tuning without replacing the cylinder.
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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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