Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-40
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X300-40 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 JSIJ100X300-40
The hard-anodized aluminum profile barrel makes the body more compact than a same-bore ISO 15552 unit.
The external adjuster lets you shorten the extend stroke by up to 40 mm, yielding a usable range of 260-300 mm without changing the cylinder itself. Air enters via a G1/2 port, and adjustable cushions decelerate the 32 mm rod at both ends. Note this SKU lacks a magnet and cannot take a sensor; add the -S variant for CMSE/DMSE switches.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-40 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-40 |
|---|---|
| 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 JSIJ100X300-40
| 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 JSIJ100X300-40 Is Used
Press Stroke Tuning
Fine-tune the 260-300 mm extend position on a stamping or clamping press without swapping actuators, using the 40 mm external adjuster to dial in the exact crush depth.
Pallet Positioning Stops
Handle heavy pallets safely by adjusting the stop position on the fly to accommodate varying load lengths while relying on the 100 mm bore for high pushing power.
Diverter Gate Control
Set precise gate extension limits for routing heavy items on a conveyor, tweaking the end point in place to match new product dimensions without machine teardown.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X300-40 the Right Cylinder?
The -40 mm adjust window is ideal for sharing one spare across multiple stroke variants or fine-tuning a press end position. Mount using FA, LB, TC, TCM1, or TCM2 brackets. Because the 300 mm stroke invites rod bending, always use an external guide to prevent side loads. Remember the cushion decelerates but does not lock; fit an external rod lock or pilot-operated check valve to hold a load on air loss.
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 JSIJ100X300-40 FAQ
At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa it pushes 5497 N and pulls 5003 N. The theoretical maximum force is 801 kgf at 1.0 MPa. This 100 mm bore cylinder uses a G1/2 port.
The nominal 300 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke on-site by up to 40 mm, giving a usable extend range of 260-300 mm. The retract end remains fixed. This mechanism sets the end position and does not lock the load.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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