Airtac JSI Series Standard Cylinder JSI125X182S
The AirTAC Airtac JSI Series Standard Cylinder JSI125X182S is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 182mm 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
- Stroke182 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 JSI125X182S
Delivering massive thrust in a compact footprint, this double-acting JIS-standard profile cylinder is notably shorter than an ISO 15552 unit of the same 125 mm bore. The hard-anodized aluminum extrusion omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life. It pushes with 6136 N and pulls with 5734 N at 0.5 MPa.
For real-world sizing, plan for about 3682 N of actual work at 0.5 MPa, which safely lifts roughly 313 kg vertically with a 2:1 margin. The 182 mm stroke is a non-standard made-to-order length, and the -S suffix means a built-in magnet is present for CMSE or DMSE switches to drop directly into the side grooves. The unit operates at 30-500 mm/s, uses a G1/2 port, and features an M27x2.0 rod thread.
Airtac JSI Series Standard Cylinder JSI125X182S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X182S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 182 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 JSI125X182S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×182 | 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 JSI125X182S Is Used
Stamping Press Feed
Clamps and feeds heavy steel coils into a mechanical press, utilizing the 6136 N push force to grip dense material securely without slipping.
Pallet Dispenser
Pushes empty wooden pallets into an automated packaging line, where the 313 kg vertical lift capacity easily manages heavy stacked loads.
Injection Mold Eject
Acts as a secondary ejector on a large injection molding machine, breaking free bulky automotive interior panels from the deep mold cavity.
Is the Airtac JSI Series Standard Cylinder JSI125X182S the Right Cylinder?
As the largest bore in the JSI range, there is no larger standard size to step up to if you need more power; stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927 N. Because this 182 mm stroke is a non-standard made-to-order length, verify lead times for your build schedule. The -S magnet pairs directly with CMSE or DMSE sensors for position detection.
A plain air cylinder cannot hold a load if air pressure drops or the valve is centered—the piston will drift, as the end cushions only decelerate motion near stroke end and act purely as buffers, never as a lock. To suspend a heavy vertical load safely, install an external rod lock or a pilot-operated check valve.
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 JSI125X182S 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 cylinder uses a G1/2 air port, an M27x2.0 rod thread, and operates at 30-500 mm/s.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore, saving valuable machine space. The extruded aluminum barrel has no external rods, and the included -S magnet allows CMSE or DMSE switches to be fitted directly into the side sensor grooves.
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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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