Airtac JSI Series Standard Cylinder JSI125X1100S
The AirTAC Airtac JSI Series Standard Cylinder JSI125X1100S is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 1100mm 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
- Stroke1100 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 JSI125X1100S
Delivering massive thrust for heavy automation, this 125 mm bore double-acting actuator pushes with 6136 N and pulls with 5734 N at 0.5 MPa. It is a JIS-standard profile cylinder built from an extruded hard-anodized aluminum barrel, making it shorter and more compact than an ISO 15552 cylinder of the same bore. The internal two-way piston seal retains grease for a long, low-friction service life.
Because this SKU includes the -S magnet, it is ready for CMSE or DMSE switches that drop directly into the side sensor grooves. Plan for about 3682 N of real work at 0.5 MPa, which means it lifts roughly 313 kg vertically with a 2:1 safety margin. The unit features a G1/2 port, an M27x2.0 rod thread, and adjustable air cushions at both ends.
Airtac JSI Series Standard Cylinder JSI125X1100S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X1100S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1100 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 JSI125X1100S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×1100 | 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 JSI125X1100S Is Used
Heavy Press Ejection
Uses the full 6136 N push force at 0.5 MPa to eject dense stamped metal parts from a hydraulic press bed over the long 1100 mm travel.
Pallet Pusher Unit
Shoves loaded pallets across a transfer roller bed, easily handling the 313 kg vertical lift equivalent to overcome guide friction during the index.
Large Door Actuation
Opens and closes heavy industrial furnace doors, relying on the 33 mm adjustable air cushions to decelerate the substantial moving mass smoothly.
Is the Airtac JSI Series Standard Cylinder JSI125X1100S the Right Cylinder?
This 1100 mm stroke falls within the 1500 mm maximum standard stroke for the 125 mm bore, but at this length you must support the load with an external guide to prevent rod bending and premature seal wear. If you need less force, the next size down is the 100 mm bore which pushes 3927 N at 0.5 MPa; there is no larger JSI bore above 125 mm. Remember that a standard cylinder drifts if air pressure is lost or the valve is centered, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended load safely.
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 JSI125X1100S 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 maximum force is 1251 kgf at 1.0 MPa. This 125 mm bore model uses a G1/2 port, an M27x2.0 rod thread, and operates at 30-500 mm/s.
It uses a JIS-standard extruded profile with no external rods, making it shorter and more compact than an ISO 15552 cylinder of the same 125 mm bore. The -S suffix means it has a built-in piston magnet, allowing CMSE or DMSE reed or electronic switches to be installed in the side grooves.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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