Airtac JSI Series Standard Cylinder JSI125X100CA
The AirTAC Airtac JSI Series Standard Cylinder JSI125X100CA is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 100mm 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
- Stroke100 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 JSI125X100CA
Delivering massive thrust in a tight footprint, this double-acting profile cylinder pushes with 6136 N and pulls with 5734 N at 0.5 MPa. Built to JIS standards, its extruded hard-anodized aluminum barrel is notably shorter and more compact than an equivalent ISO 15552 unit of the same 125 mm bore, saving valuable machine space without sacrificing power.
The bore uses a G1/2 port and a 32 mm piston rod with an M27x2.0 thread. A heterogeneous two-way piston seal retains grease for low-friction life, while the adjustable 33 mm air cushions at both ends decelerate the heavy payload smoothly. 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.
Airtac JSI Series Standard Cylinder JSI125X100CA Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X100CA |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 JSI125X100CA
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×100 | 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 JSI125X100CA Is Used
Heavy Stamping Press
Drives large dies and heavy platens in automotive metalforming lines, utilizing the 6136 N push force to shape thick steel blanks reliably.
Injection Mold Ejection
Ejects bulky molded plastic parts from large tonnage presses, where the 5734 N pull force reliably retracts the heavy ejector plate.
Pallet Lifter Mechanism
Actuates heavy-duty lifting arms in automated storage systems, safely moving maximum pallet loads during high-throughput retrieval.
Is the Airtac JSI Series Standard Cylinder JSI125X100CA the Right Cylinder?
For loads requiring less force, the next size down is the 100 mm bore (3927 N push at 0.5 MPa); the 125 mm bore is the largest available in this series, so exceeding its capacity requires a different solution. The CA clevis mount supplied with this unit accommodates pivoting articulation. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position sensors. A standard cylinder drifts if air pressure drops, so install an external rod lock or pilot-operated check valve if you must 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 JSI125X100CA FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it delivers 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. This 125 mm bore unit uses a G1/2 air port and operates at speeds of 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. The adjustable air cushion only decelerates the piston near the stroke end; it does not act as a brake. If air is lost, the piston will drift, so an external rod lock is required for holding suspended loads.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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