Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 450mm 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.
- BoreØ125 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- 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 JSIJ125X450-75S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore actuator tackles heavy-duty motion with ease. The hard-anodized aluminum profile barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 cylinder, saving valuable machine space. It handles about 3682 N of safe working load, which translates to lifting roughly 313 kg vertically with a 2:1 margin.
A built-in piston magnet (-S) allows CMSE or DMSE switches to drop directly into the side grooves for precise position detection. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, giving a usable range of 375-450 mm without changing the cylinder itself. Air connects via a G1/2 port, and the retract end remains fixed while you fine-tune the extend end position.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 450 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×450 | 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 JSIJ125X450-75S Is Used
Heavy Pallet Lifting
Raises loaded pallets in packaging lines, using the 75 mm extend adjuster to dial in the exact raise height for different pallet sizes without swapping cylinders.
Press Ejection Systems
Pushes heavy stamped parts out of a press, relying on the 6136 N thrust at 0.5 MPa and adjusting the extend stop to accommodate varying material widths.
Automated Storage Retrieval
Actuates large load trays in automated warehousing, using the built-in magnet for end-position confirmation and the compact JIS profile to fit tight vertical aisles.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75S the Right Cylinder?
When sizing this actuator, stepping down to a 100 mm bore yields 3927 N push at 0.5 MPa, whereas this 125 mm bore provides 6136 N; moving up is not an option as 125 mm is the largest available JSIJ size. The 75 mm adjustable window is ideal for sharing a single spare cylinder across multiple stroke variants or fine-tuning the end position on-site. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the stroke is 450 mm, external guides are strongly recommended to prevent rod bending and manage side loads. The -S suffix means the magnet is already integrated for 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 JSIJ125X450-75S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. The air port size is G1/2.
The nominal 450 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, yielding a usable range of 375-450 mm while the retract end stays fixed. This mechanism only sets the end position; it does not hold the load on air loss. For load holding, you must use an external rod lock or pilot-operated check valve, as the air cushion only decelerates the piston.
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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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