Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S is a genuine double acting, double rod, adjustable stroke 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, double rod, adjustable stroke
- 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 JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S
A built-in magnet (-S) allows CMSE/DMSE sensors to drop directly into the side grooves for electronic position feedback. The extruded hard-anodized aluminium barrel keeps the overall body more compact and shorter than a same-bore ISO 15552 unit.
The external adjuster lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 260-300 mm while the retract end stays fixed. You can fine-tune the stop without swapping the cylinder. Air connects via a G3/8 port, and adjustable 29 mm cushions decelerate the piston at both ends. Note that the cushion only slows movement; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve for held loads.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
Model Code: Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke 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 JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S Is Used
Forming Press Stop
Dial in the exact material contact point on a forming line by shortening the extend stroke up to 40 mm on-site without changing the fixture height.
Transfer Diverter
Adjust the extend reach on the fly to route different box sizes, using the 260-300 mm window to match varying conveyor lane widths.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S the Right Cylinder?
The 40 mm adjuster window is ideal when you need to share a spare cylinder across slightly different stroke variants or fine-tune the extend end-position on the machine. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. The -S suffix means the piston magnet is present for CMSE/DMSE switches. Because the 300 mm stroke is long, always use an external guide rail to prevent rod bending and absorb side loads.
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 JSIJ63~80 Adjustable Cylinder JSIJ63X300-40S FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa. The air port size is G3/8.
The nominal 300 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable extend range of 260-300 mm. The retract end remains fixed, and this mechanism sets the end position rather than locking the load.
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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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