Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-40 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 JSIJ63X300-40
Its extruded hard-anodized aluminium barrel keeps the overall body shorter than a same-bore ISO 15552 unit, saving valuable machine space without sacrificing strength.
The external adjuster lets you shorten the extend stroke on-site by up to 40 mm, meaning the usable forward travel spans 260 to 300 mm while the retract end stays fixed. You can fine-tune the end position without physically swapping the cylinder, and a shared spare can cover multiple stroke variants. Note this SKU lacks a magnet and cannot take a sensor; adding the -S variant enables CMSE/DMSE switches.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40 |
|---|---|
| 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 JSIJ63X300-40
| 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 JSIJ63X300-40 Is Used
Adjustable Press Stroke
Dial in the exact 260 to 300 mm extend contact distance on-site for pressing bearings without machining custom spacers.
Variable Length Diverter
Fine-tune the actuator reach by up to 40 mm to redirect different package sizes on a packaging line quickly.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-40 the Right Cylinder?
The 40 mm adjustable window is ideal for on-site end-position tuning or keeping one shared spare across similar stroke variants. JSIJ mounting choices include Basic, FA, LB, TC, TCM1, and TCM2. Because the 300 mm stroke introduces rod-bending risks, always use an external guide rail to absorb side loads and prevent premature seal wear. Remember that a plain cylinder drifts on air loss; the cushion only decelerates, so fit an external rod lock or pilot-operated check valve if you need to hold a load vertically.
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 JSIJ63X300-40 FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa.
The nominal 300 mm stroke is the maximum forward travel. An external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 260 to 300 mm. The retract end remains fixed, and this mechanism sets end position rather than locking the load.
Authorized Export Seller
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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