Airtac JSI Series Standard Cylinder JSI125X200STC
The AirTAC Airtac JSI Series Standard Cylinder JSI125X200STC is a genuine double acting JIS-standard air cylinder with a Ø125mm bore and 200mm 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
- Stroke200 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 JSI125X200STC
Delivering massive thrust for heavy machinery, the AirTAC JSI125X200STC is a double-acting JIS-standard profile cylinder that generates 6136 N of push force at 0.5 MPa. Built with an extruded hard-anodized aluminum barrel, it completely removes external rods to save valuable space, measuring noticeably shorter than an ISO 15552 cylinder of the same bore. The internal two-way piston seal retains grease, ensuring long, low-friction operation even under high stress.
Because this SKU includes the -S magnet, it readily accepts CMSE or DMSE electronic switches that drop directly into the side grooves for precise end-position detection. Plan for about 3682 N of real work at 0.5 MPa, which safely lifts roughly 313 kg vertically with a 2:1 margin. The unit features a G1/2 port, an M27x2.0 rod thread, and a TC trunnion mount interface for pivoting applications.
Airtac JSI Series Standard Cylinder JSI125X200STC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X200STC |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 JSI125X200STC
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×200 | 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 JSI125X200STC Is Used
Heavy Stamping Presses
Drives large forming dies and heavy press tools where 8590 N of thrust at 0.7 MPa is required to shape thick steel plates.
Pallet Inverters
Actuates the rotating and clamping carriages of industrial pallet inverters, easily managing loads up to 313 kg vertically.
Injection Molding Ejectors
Pushes finished molded parts out of large industrial injection molding machines, relying on the 30-500 mm/s speed range for smooth ejection.
Is the Airtac JSI Series Standard Cylinder JSI125X200STC the Right Cylinder?
When sizing this 125 mm bore, the next size down is the 100 mm option offering 3927 N push at 0.5 MPa, while the 125 mm stands as the largest available JSI bore with no larger standard alternative. The integrated -S magnet pairs perfectly with CMSE or DMSE sensors, and the included TC trunnion mount handles pivoting loads effectively. Remember that a standard cylinder drifts when air is lost or a valve centers; the adjustable 33 mm cushions only decelerate the piston near stroke ends, so install an external rod lock or pilot-operated check valve if you need to hold a suspended load.
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 JSI125X200STC FAQ
This 125 mm bore cylinder delivers 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 max of 1251 kgf at 1.0 MPa. It uses a G1/2 air port 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. The hard-anodized aluminum barrel has no external rods, and the TC trunnion mount allows for pivoting installations.
Authorized Export Seller
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.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSI Series Standard Cylinder JSI125X200STC
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.