Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X400-20S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X400-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 400mm 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
- Stroke400 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 JSIJ63X400-20S
An external stop screw lets you shorten the extend stroke by up to 20 mm, giving a usable range of 380-400 mm while the retract end stays fixed. The nominal 400 mm stroke remains the maximum travel. Because the extruded hard-anodized aluminum barrel omits external rods, the overall body is noticeably shorter and more compact than a same-bore ISO 15552 unit.
The -S suffix means a piston magnet is factory-fitted, allowing CMSE or DMSE reed and electronic switches to clip directly into the side grooves. Pneumatically it feeds through a G3/8 port and runs at 30-800 mm/s. Note that the adjustable stop and air cushions only decelerate the piston; they do not lock the load, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended weight.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X400-20S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X400-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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 JSIJ63X400-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×400 | 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 JSIJ63X400-20S Is Used
Press Position Trimming
Use the 20 mm extend adjuster to dial in the exact contact point on a light assembly press without remachining the fixture.
Variable Transfer Stops
Swap this single 400 mm unit into multiple lanes and shorten the extend stroke on site to match differing package sizes.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X400-20S the Right Cylinder?
The 20 mm adjustable extend window is especially useful for sharing one spare cylinder across several stroke variants or fine-tuning a pressing position without changing the mounting. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the 400 mm stroke creates a long lever arm, always guide the load externally to prevent rod bending and side-load wear.
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 JSIJ63X400-20S FAQ
This 63 mm bore cylinder pushes 1559 N and pulls 1402 N at 0.5 MPa. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 port, features a 20 mm piston rod, and has an M18x1.5 rod-end thread.
The -20 code means an external adjuster can shorten the extend stroke by up to 20 mm on site. The usable extend range is 380-400 mm, with the nominal 400 mm acting as the maximum travel. The retract end is fixed. This mechanism sets the end position but does not lock the load.
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