Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 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 JSIJ125X150-50
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder is built for heavy-duty actuation. The hard-anodized aluminum barrel makes it shorter and more compact than a same-bore ISO 15552 unit. It handles about 3682 N of real work safely, lifting roughly 313 kg vertically with a 2:1 margin.
A -50 mm external adjuster lets you shorten the extend stroke on-site down to 100 mm without changing the cylinder itself, while the retract end stays fixed. This SKU has no magnet and cannot take a sensor; add the -S variant for CMSE/DMSE switches. The G1/2 port and 33 mm adjustable cushions manage heavy end-of-stroke energy, though the cushion only decelerates and a plain cylinder needs an external rod lock to hold a load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 JSIJ125X150-50
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×150 | 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 JSIJ125X150-50 Is Used
Press Tonnage Trimming
Shorten the extend stroke by up to 50 mm on-site to precisely set the bottom dead center for light pressing tasks without swapping the cylinder.
Heavy Pallet Stops
Use the 6136 N push force to halt heavy pallets, adjusting the 100 to 150 mm extend window on the fly to match varying load depths.
Large Mold Ejection
Eject dense molds with a 313 kg vertical lift capacity, relying on the 33 mm cushions to decelerate the massive moving mass smoothly.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50 the Right Cylinder?
Size this 125 mm bore against the 100 mm option, which offers 3927 N push at 0.5 MPa, or step up if you need the absolute maximum 1251 kgf at 1.0 MPa. The 50 mm adjustable window is ideal for sharing a spare across stroke variants or fine-tuning the extend end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a non-magnet SKU, you cannot fit position sensors; choose the -S version if you need CMSE/DMSE detection. For any stroke over 300 mm, always use a guide rail to prevent side-load damage to 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 JSIJ125X150-50 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 is 1251 kgf at 1.0 MPa. It uses a G1/2 port, an M27x2.0 rod thread, and runs at 30-500 mm/s.
The nominal 150 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 50 mm on-site, giving a usable extend range of 100 to 150 mm. The retract end remains fixed, and this adjustment sets the end position rather than locking the load.
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