Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X450-20S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X450-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 450mm 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
- Stroke450 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 JSIJ63X450-20S
The external stop screw lets you trim the extend stroke by up to 20 mm on site, meaning you can fine-tune the 450 mm maximum end position without swapping the actuator.
Because this SKU includes the -S suffix, a built-in piston magnet is present for CMSE/DMSE switches that drop directly into the side grooves. Air connects via the G3/8 port, and adjustable air cushions of 29 mm at each end absorb kinetic energy. Remember that the cushion only decelerates the piston; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a load.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X450-20S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X450-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 450 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 JSIJ63X450-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×450 | 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 JSIJ63X450-20S Is Used
Transfer Push-Off Tuning
Trim the 450 mm extend stroke by up to 20 mm on site to perfectly match a moving conveyor push-off position without changing the cylinder mount.
Pallet Stop Adjustment
Fine-tune the stopping end point for varying pallet sizes on a packaging line using the external adjuster while the fixed retract handles the return.
Sensor-Verified Forming
Leverage the -S magnet with CMSE/DMSE switches to confirm part ejection, adjusting the 20 mm window to accommodate different forming die heights.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X450-20S the Right Cylinder?
The -20 mm adjustable window is highly useful when you need to synchronize multiple actuators or dial in a precise end position after mounting without machining custom spacers. You can mount this unit using FA, LB, TC, TCM1, or TCM2 brackets. Because the 450 mm stroke is relatively 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 JSIJ63X450-20S FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa.
The nominal 450 mm stroke is the maximum extend length. The external stop screw lets you shorten the extend stroke by up to 20 mm on site, giving a usable range of 430-450 mm. The retract end remains fixed, and this stop is for position tuning only, not load holding.
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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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