Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 200mm 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
- Stroke200 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 JSIJ125X200-75
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty motion into a compact profile barrel that is noticeably shorter than a same-bore ISO 15552 cylinder. The hard-anodized aluminium extrusion keeps the assembly light, and the G1/2 port handles the high airflow needed for the 30-500 mm/s speed range.
The -75 code means an external stop screw lets you shorten the extend stroke on-site by up to 75 mm, dropping the usable forward travel from the 200 mm maximum down to 125 mm without swapping the cylinder. This on-site tuning handles about 3682 N of safe working load, roughly 313 kg lifted vertically with a 2:1 margin. The retract end stays fixed, and the adjustable air cushions only decelerate the load near the ends rather than holding it in place.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 JSIJ125X200-75
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×200 | 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 JSIJ125X200-75 Is Used
Press Tonnage Tuning
Dial in the exact 125 to 200 mm extend reach on a heavy stamping press without machining new spacers, using the external stop screw to set the precise contact point.
Pallet Stop Calibration
Adjust the forward stop on-site to accommodate different pallet depths in a high-force conveyor line, shortening the extend stroke by up to 75 mm as needed.
Heavy Clamp Positioning
Secure large fabrication frames by tweaking the clamping endpoint after mounting, relying on the 8590 N push at 0.7 MPa to hold the workpiece during welding.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75 the Right Cylinder?
Sizing this 125 mm bore against its neighbours shows its place: a 100 mm bore gives 3927 N push at 0.5 MPa, while this model steps up to 6136 N before hitting the top of the range. The adjustable-stroke window is ideal when you need to fine-tune an end position after installation or want a single spare part that covers several stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a plain SKU without an -S suffix, it cannot take a CMSE or DMSE magnetic sensor. For any stroke over 300 mm, always use a guide rail to prevent side-load wear on the rod.
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 JSIJ125X200-75 FAQ
This 125 mm bore cylinder pushes 6136 N and pulls 5734 N at 0.5 MPa. At 0.7 MPa it pushes 8590 N and pulls 8028 N, with a theoretical maximum of 1251 kgf at 1.0 MPa. It uses a G1/2 air port, a 32 mm rod, an M27x2.0 rod thread, and 33 mm adjustable cushions at both ends.
The 200 mm nominal stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, giving a usable range of 125 to 200 mm. The retract end is fixed, and this stop mechanism only sets the end position; it does not lock or hold the load on air loss.
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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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