Airtac JSI Series Standard Cylinder JSI125X200TC
The AirTAC Airtac JSI Series Standard Cylinder JSI125X200TC 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 JSI125X200TC
Delivering massive thrust in a tight footprint, this double-acting JIS-standard profile cylinder is notably shorter and more compact than an equivalent ISO 15552 unit of the same 125 mm 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. It pushes with 6136 N and pulls with 5734 N at 0.5 MPa, operating through a G1/2 port.
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 unit travels 200 mm at 30-500 mm/s and features adjustable 33 mm air cushions at both ends to decelerate the heavy payload smoothly. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position sensors.
Airtac JSI Series Standard Cylinder JSI125X200TC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI125X200TC |
|---|---|
| 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 JSI125X200TC
| 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 JSI125X200TC Is Used
Stamping Press Feed
Clamps and pushes heavy coil stock into a mechanical press, using the 6136 N push force to overcome spring-loaded guide resistance.
Pallet Dispenser
Lifts empty wooden pallets from a magazine stack, easily handling the 313 kg safe vertical load margin within the 200 mm travel.
Injection Mold Eject
Acts as a heavy-duty knockout on a large injection molding machine, retracting a 32 mm rod to pull a saturated core from the tool.
Is the Airtac JSI Series Standard Cylinder JSI125X200TC the Right Cylinder?
If 313 kg of vertical lift is excessive, the next size down is the 100 mm bore, which delivers 3927 N of push force at 0.5 MPa; there is no larger bore in the JSI range. This 125 mm bore pairs naturally with a TC trunnion mount to handle pivoting loads. Since this SKU has no -S suffix, you cannot mount magnetic switches—upgrade to an -S variant if position feedback is required.
Note that a standard double-acting cylinder drifts when air is lost or the valve is centered, as the end cushions only decelerate the stroke and do not act as a brake. To suspend a load safely during an air failure, 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 JSI125X200TC FAQ
This 125 mm bore cylinder uses a G1/2 port and a M27x2.0 rod thread. It generates 6136 N push and 5734 N pull at 0.5 MPa, increasing to 8590 N push and 8028 N pull at 0.7 MPa, with a theoretical maximum of 1251 kgf at 1.0 MPa. Operating speed ranges from 30-500 mm/s.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 unit of the same bore. The adjustable air cushions only decelerate the piston near the stroke end; they do not lock the rod. If you need to hold a load vertically during air loss, add an external rod lock or pilot-operated check valve.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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