Airtac JSI Series Standard Cylinder JSI125X110
The AirTAC Airtac JSI Series Standard Cylinder JSI125X110 is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 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 JSI125X110
Generating 6136 N of push force at 0.5 MPa, this 125 mm bore double-acting actuator fits heavy machinery into tight footprints. As a JIS-standard profile cylinder, it is noticeably shorter and more compact than an equivalent ISO 15552 model of the same bore. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life.
Equipped with a G1/2 port and an M27x2.0 rod thread, it moves at 30-500 mm/s with 33 mm adjustable air cushions at both ends. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position switches. For real-world sizing, plan for about 3682 N of actual work at 0.5 MPa, which translates to lifting roughly 313 kg vertically with a 2:1 safety margin.
Airtac JSI Series Standard Cylinder JSI125X110 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X110 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 JSI125X110
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×110 | 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 JSI125X110 Is Used
Stamping Press Ejection
Uses the 6136 N push force at 0.5 MPa to knock heavy stamped metal panels out of a 200-ton press bed reliably.
Pallet Dispenser Pusher
The 110 mm stroke provides the precise burst of motion needed to separate and feed empty wooden pallets into an automated packaging line.
Injection Mold Clamping
Applies massive holding pressure to secure heavy mold halves, taking advantage of the 125 mm bore's high thrust capacity in a compact body.
Is the Airtac JSI Series Standard Cylinder JSI125X110 the Right Cylinder?
This 125 mm bore sits at the top of the JSI range, so there is no larger standard size to step up to. If you need less force, stepping down to the 100 mm bore drops the 0.5 MPa push force to 3927 N. Keep in mind that a standard cylinder drifts when air is lost or a valve is centered, as the end cushions only decelerate the piston near stroke end rather than locking it. To hold a suspended load securely, install an external rod lock or a pilot-operated check valve. Since this base unit has no magnet, you must select the -S variant if you require electronic position sensing.
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 JSI125X110 FAQ
The JSI125X110 has a G1/2 port and an M27x2.0 rod thread. It generates 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push and 8028 N pull at 0.7 MPa, with a theoretical maximum of 1251 kgf at 1.0 MPa.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 125 mm bore. The hard-anodized aluminum extruded barrel contains no external rods, saving valuable machine space without sacrificing the 33 mm adjustable end cushions.
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Standard models are processed and dispatched in 3-5 business days.
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