Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-75
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X300-75 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 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 JSIJ100X300-75
The extruded hard-anodized aluminium body omits external rods, making it shorter and more compact than a same-bore ISO 15552 unit. A G1/2 port feeds the chamber, while an external adjuster lets you trim the extend stroke on-site by up to 75 mm, yielding a usable 225-300 mm forward travel without swapping the actuator.
The retract end remains fixed, and adjustable air cushions of 33 mm at each end absorb kinetic energy near the stroke limits. Note that this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors without the -S variant.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-75 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 JSIJ100X300-75
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSIJ100X300-75 Is Used
Press Stroke Tuning
Dial in the exact 225-300 mm extend position on a light assembly press without machining new spacers, using the external stop screw to set the precise impact depth.
Pallet Stopper Adjustment
Accommodate varying pallet heights on a conveyor line by shortening the forward stroke up to 75 mm on-site, ensuring the 100 mm rod stops the load securely at the correct height.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-75 the Right Cylinder?
When sizing this actuator, the 100 mm bore sits near the top of the range; stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while the 125 mm bore jumps to 6136 N. The -75 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or fine-tuning the end position during machine commissioning. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke is 300 mm, always support the load with an external guide to prevent rod bending and excessive side loading. Remember that a plain cylinder drifts on air loss—the cushion only decelerates, so use an external rod lock for held 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 JSIJ100~125 Adjustable Cylinder JSIJ100X300-75 FAQ
The theoretical maximum force is 801 kgf at 1.0 MPa. It features a 32 mm rod, M26x1.5 rod thread, and a G1/2 air port.
The 300 mm nominal stroke is the maximum length. The external adjuster lets you shorten the extend stroke by up to 75 mm on-site, giving a usable forward travel range of 225-300 mm. The retract end is fixed, and the adjuster sets the end position but does not lock the load.
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Standard models are processed and dispatched in 3-5 business days.
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