Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-75
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-75 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 JSIJ125X225-75
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty motion into a compact footprint. The hard-anodized aluminum profile barrel makes it shorter than a same-bore ISO 15552 cylinder. It handles about 3682 N of real work safely, which means you can lift roughly 313 kg vertically with a 2:1 margin.
The external stop screw lets you trim the extend stroke on-site by up to 75 mm, dropping the usable travel from the 225 mm maximum down to 150 mm without swapping the cylinder. Retract remains fixed. Air enters via a G1/2 port, and adjustable 33 mm cushions absorb shock at both ends. Note this SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-75 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-75 |
|---|---|
| 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 JSIJ125X225-75
| 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 JSIJ125X225-75 Is Used
Press Tonnage Trimming
Dial in the exact 150 to 225 mm forming depth on a heavy stamping line using the external 75 mm adjuster instead of machining new spacers.
Pallet Positioning Stop
Act as an adjustable physical stop for large inbound pallets, fine-tuning the contact position on-site to match varying load widths.
Heavy Lift Gate Control
Move 313 kg vertical loads smoothly in materials handling gates, relying on the 33 mm cushions to soften the end-of-stroke impact.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-75 the Right Cylinder?
For lighter jobs pulling 318 kgf max, step down to the 100 mm bore which still pushes 3927 N at 0.5 MPa. If you need more than the 125 mm bore 8590 N push at 0.7 MPa, you are at the top edge of this range and should explore twin cylinders. The 75 mm adjust window is perfect for sharing one spare across machines that need 150 to 225 mm end positions. Mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because this is a no-magnet SKU, position sensing is impossible here. For any stroke over 300 mm, always guide the load to prevent rod side-load damage.
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 JSIJ125X225-75 FAQ
It pushes 6136 N and pulls 5734 N at 0.5 MPa. At 0.7 MPa it pushes 8590 N and pulls 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa. This 125 mm bore uses a G1/2 port and features a 33 mm adjustable air cushion at each end.
The nominal 225 mm stroke is the maximum travel. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 150 to 225 mm. The retract end is fixed. This stop only sets the end position; it does not lock the load, so use an external rod lock or pilot-operated check valve if you need to hold a load against air loss.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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