Airtac JSI Series Standard Cylinder JSI125X1500
The AirTAC Airtac JSI Series Standard Cylinder JSI125X1500 is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 1500mm 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
- Stroke1500 mm
- Port sizeG1/2
- Acting typeDouble acting
- 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 JSI Series Standard Cylinder JSI125X1500
Delivering massive thrust for heavy-duty automation, this double-acting JIS-standard profile cylinder pushes with 6136 N and pulls with 5734 N at 0.5 MPa. The extruded hard-anodized aluminum barrel omits external rods entirely, making the unit noticeably shorter and more compact than an ISO 15552 cylinder of the same 125 mm bore. A heterogeneous two-way piston seal retains grease for a long, low-friction service life, while the G1/2 port feeds the massive 32 mm piston rod.
Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position switches without modification. For sizing real payloads, plan for roughly 3682 N of actual work at 0.5 MPa, which translates to lifting about 313 kg vertically with a 2:1 safety margin. The adjustable 33 mm air cushions at both ends decelerate the rod smoothly, and the unit operates reliably between 30-500 mm/s.
Airtac JSI Series Standard Cylinder JSI125X1500 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X1500 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1500 mm |
| Acting type | Double acting |
| 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 JSI Series Standard Cylinder JSI125X1500
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×1500 | 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 JSI Series Standard Cylinder JSI125X1500 Is Used
Heavy Press Ejection
Provides the raw 6136 N push force needed to eject heavy formed metal parts from a 1500-ton hydraulic press over a long 1500 mm travel distance.
Palletizer Transfer
Moves loaded pallets across a wide conveyor gap, utilizing the full 1500 mm stroke while external guide rails absorb the lateral payload weight.
Large Door Actuation
Opens and closes massive industrial furnace or cleanroom doors, relying on the 33 mm adjustable air cushions to decelerate the heavy 313 kg load smoothly.
Is the Airtac JSI Series Standard Cylinder JSI125X1500 the Right Cylinder?
If 6136 N of push at 0.5 MPa is too much, stepping down to the 100 mm bore yields 3927 N; if more force is needed, the 125 mm is the largest available in the JSI range, so a larger bore would require a different cylinder family. Since this is a plain double-acting cylinder, it will drift if air pressure is lost or the valve is centered, so an external rod lock or pilot-operated check valve is required to hold a suspended load safely. The standard M27x2.0 rod thread accepts I, Y, F, or U knuckles, and mounting options include LB, FA, FB, CA, CB, CR, TC, TCM1, and TCM2.
At the maximum standard stroke of 1500 mm, the 32 mm rod is highly susceptible to side-loading and buckling. External guide rails must support the load to prevent premature seal wear and rod bending.
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 JSI Series Standard Cylinder JSI125X1500 FAQ
At 0.5 MPa it pushes with 6136 N and pulls with 5734 N. At 0.7 MPa it pushes with 8590 N and pulls with 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa, and the air port size is G1/2.
No, this specific SKU does not include a magnet. To use CMSE or DMSE switches in the side sensor grooves, you must select the JSI125X1500-S variant. The base model cannot detect piston position magnetically.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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