Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X250-50 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 JSIJ100X250-50
Its extruded hard-anodized aluminium profile barrel makes it shorter and more compact than a same-bore ISO 15552 cylinder, while the G1/2 port handles the necessary air volume.
The JSIJ100X250-50 is a double-acting double-rod cylinder with a nominal 250 mm extend stroke. An external stop screw lets you shorten that extend stroke on-site by up to 50 mm, giving a usable range of 200 to 250 mm for fine-tuning the end position without changing the hardware. The retract end remains fixed. Note this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor; you would need the -S variant for position detection.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50 |
|---|---|
| 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 JSIJ100X250-50
| 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 JSIJ100X250-50 Is Used
Press Stroke Tuning
Dial in the exact 200 to 250 mm extend position on a light-duty assembly press without swapping the cylinder, using the external adjuster to accommodate varying material thicknesses.
Heavy Vertical Dampening
Lower heavy 200 kg fixtures safely into a machine bed, relying on the 33 mm adjustable air cushions at both ends to decelerate the load smoothly before the end of travel.
Variable-Length Diverters
Actuate a routing gate on a high-capacity conveyor where the required reach varies by 50 mm depending on the product family running through the line.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X250-50 the Right Cylinder?
The 50 mm adjustable window is particularly useful when you need to share one spare cylinder across several stroke variants or dial in a precise end position on-site. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the 250 mm stroke is below the 300 mm threshold, side-load risks are minimal, but always guide the load for any longer travels. This non-magnetic model cannot support 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 JSIJ100~125 Adjustable Cylinder JSIJ100X250-50 FAQ
The theoretical maximum force is 801 kgf at 1.0 MPa. It features a 32 mm piston rod, an M26x1.5 rod-end thread, a G1/2 air port, and 33 mm adjustable air cushions at both ends.
The nominal stroke is 250 mm, which is the maximum extend length. An external stop screw mechanism allows you to shorten the extend stroke on-site by up to 50 mm, yielding a usable extend range of 200 to 250 mm. This only adjusts the extend end position; the retract end is fixed. The stop screw is not a load lock, so use an external rod lock or pilot-operated check valve if you need to hold a load vertically.
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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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