Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-30
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 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 JSIJ125X225-30
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder is built for heavy-duty positioning. The hard-anodized aluminium barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. It handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin. A G1/2 port feeds the 32 mm rod, and the unit runs at 30-500 mm/s.
The -30 code means an external stop screw lets you shorten the extend stroke on-site by up to 30 mm, giving a usable range of 195-225 mm. You can fine-tune the end position without changing the cylinder itself, while the retract end stays fixed. This SKU lacks a magnet, so it cannot take a CMSE or DMSE sensor. The adjustable air cushions only decelerate the load near the ends; for true load holding on air loss, fit an external rod lock or pilot-operated check valve.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-30 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 JSIJ125X225-30
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×225 | 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 JSIJ125X225-30 Is Used
Heavy Pallet Lifts
Raises loaded pallets in distribution hubs, using the 30 mm extend adjuster to fine-tune the exact stopping height for different conveyor heights.
Press Ejection
Pushes heavy metal blanks out of a forming press, relying on the 6136 N thrust and adjustable cushions to decelerate the load safely.
Guided Load Stops
Acts as a heavy-duty end stop for large transfer carts, shortening the extend stroke on-site to match cart width without swapping the cylinder.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-30 the Right Cylinder?
At the top of the range, this 125 mm bore pushes 6136 N and pulls 5734 N at 0.5 MPa. If that is too much force, step down to the 100 mm bore, which offers 3927 N push at the same pressure. The adjustable stroke is ideal when you need to share one spare across slight stroke variants or dial in an end position on-site. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a non-magnet SKU, you cannot mount position sensors; add the -S variant for CMSE or DMSE switches. For any stroke at or above 300 mm, use a guide rail to prevent side-load damage to the rod seals.
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 JSIJ125X225-30 FAQ
At 0.5 MPa it pushes 6136 N and pulls 5734 N. At 0.7 MPa it pushes 8590 N and pulls 8028 N. The theoretical max force is 1251 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod with an M27x2.0 thread, and has 33 mm adjustable cushions at both ends. Operating speed is 30-500 mm/s.
The nominal stroke is 225 mm, which is the maximum extend length. The external -30 adjuster lets you shorten the extend stroke on-site by up to 30 mm, giving a usable range of 195-225 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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