Airtac JSI Series Standard Cylinder JSI125X160
The AirTAC Airtac JSI Series Standard Cylinder JSI125X160 is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 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 JSI125X160
Delivering massive thrust in a tight footprint, this double-acting JIS-standard profile cylinder pushes with 6136 N and pulls with 5734 N at 0.5 MPa. Built with an extruded hard-anodized aluminum barrel, it is purposefully shorter and more compact than an ISO 15552 cylinder of the same 125 mm bore, saving valuable machine space. The internal two-way piston seal retains grease for a long, low-friction service life.
Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position switches. For sizing your pneumatics, plan for about 3682 N of real work at 0.5 MPa, which safely lifts about 313 kg vertically with a 2:1 margin. It features a G1/2 port, an M27x2.0 rod thread, and adjustable 33 mm air cushions at both ends to decelerate the piston smoothly.
Airtac JSI Series Standard Cylinder JSI125X160 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X160 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 JSI125X160
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×160 | 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 JSI125X160 Is Used
Heavy Press Stamping
Drives large stamping dies and heavy metal forming presses where 6136 N of push force at 0.5 MPa is required to shape thick steel plates.
Injection Mold Clamping
Secures heavy injection molding halves during plastic part injection, using its 5734 N pull force to maintain rigid clamping pressure.
Palletizer Actuation
Actuates the main lifting arms in industrial palletizing robots, moving heavy packaged goods with a safe 313 kg vertical lift capacity.
Is the Airtac JSI Series Standard Cylinder JSI125X160 the Right Cylinder?
As the largest bore in the JSI series, there is no larger standard size to step up to; if 6136 N at 0.5 MPa is insufficient, you must add external boosters or switch to a custom multi-piston design. Stepping down, the 100 mm bore offers 3927 N push at 0.5 MPa, which is the logical choice if your load is lighter and you want a smaller G1/2 footprint.
Since this is a non-magnet model, you cannot mount sensors; select a JSI125X160-S variant if you require CMSE or DMSE switches for end-of-stroke detection. Furthermore, a standard cylinder drifts when air is lost or the valve is centered, so install an external rod lock or pilot-operated check valve if your application requires the load to be held securely in place.
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 JSI125X160 FAQ
The JSI125X160 delivers a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, push is 8590 N and pull is 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 air port and operates at speeds between 30-500 mm/s.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 125 mm bore. It achieves this space saving through an extruded aluminum barrel design. Note that this specific SKU has no magnet, so it cannot use magnetic sensors unless you upgrade to the -S version.
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