Airtac JSI Series Standard Cylinder JSI63X300STC
The AirTAC Airtac JSI Series Standard Cylinder JSI63X300STC is a genuine double acting JIS-standard air cylinder with a Ø63mm bore and 300mm stroke, G3/8 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.
- BoreØ63 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM18×1.5
- CushionAdjustable, 29 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 JSI63X300STC
Delivering 1559 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than an equivalent ISO 15552 unit of the same 63 mm bore. The extruded hard-anodized aluminum barrel eliminates external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life. A built-in piston magnet is included, allowing CMSE or DMSE electronic switches to drop directly into the side grooves for position sensing.
At 0.5 MPa, plan for roughly 935 N of real work, which translates to lifting about 79 kg vertically with a 2:1 safety margin. The unit features a 20 mm piston rod, M18x1.5 rod-end thread, and a G3/8 air port. Because this is a 300 mm stroke, external guides are recommended to prevent rod bending under heavy side loads. The adjustable 29 mm air cushions at both ends decelerate the piston smoothly, but note that a plain cylinder drifts if air pressure is lost.
Airtac JSI Series Standard Cylinder JSI63X300STC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI63X300STC |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M18×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 29 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 JSI63X300STC
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSI63X300STC Is Used
Pallet Diversion
Handles the 1559 N push force required to deflect heavy loaded pallets onto secondary conveyor lanes at 0.5 MPa operating pressure.
Vertical Crate Lifting
Lifts parts weighing up to 79 kg using a 2:1 safety margin, utilizing the TC trunnion mount for smooth pivoting articulation.
Press Ejection
Ejects formed metal components from a hydraulic press, relying on the 29 mm adjustable air cushions to absorb impact at stroke end.
Is the Airtac JSI Series Standard Cylinder JSI63X300STC the Right Cylinder?
When sizing this 63 mm bore, stepping down to a 50 mm bore reduces the push force to 982 N at 0.5 MPa, while stepping up to an 80 mm bore increases it to 2513 N. The included TC trunnion mount provides a pivoting axis ideal for articulated mechanisms. Since this SKU includes the -S magnet, it is fully ready for CMSE/DMSE sensors. For the 300 mm stroke, ensure external load guides are used to absorb lateral forces and protect the rod from bending. Remember that the air cushion only decelerates the piston near the stroke end; to hold a load vertically during air loss, install an external rod lock or 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 JSI63X300STC FAQ
This 63 mm bore cylinder has a G3/8 air port and provides 1559 N push / 1402 N pull at 0.5 MPa, 2182 N push / 1962 N pull at 0.7 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa.
The JIS profile is shorter and more compact than an ISO 15552 cylinder of the same bore, saving space. The TC trunnion mount allows pivoting, and the built-in -S magnet supports drop-in CMSE/DMSE sensors.
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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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