Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-20
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-20 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 JSIJ63X300-20
Its extruded hard-anodized aluminium barrel leaves out external tie rods, making the overall body shorter and more compact than a same-bore ISO 15552 unit. The G3/8 porting feeds a double-acting double-rod piston that drives a 300 mm stroke.
A built-in external adjuster lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 280 to 300 mm without swapping the cylinder. This on-site tuning is ideal for dialling in exact end positions. Note this SKU lacks a magnet, so it cannot take CMSE or DMSE sensors.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-20 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-20 |
|---|---|
| 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 JSIJ63X300-20
| 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 JSIJ63X300-20 Is Used
Conveyor Diverter Tuning
Dial in the exact push distance of a diverter gate on-site using the 20 mm adjuster window to perfectly match varying product widths without changing hardware.
Press End-Position Setup
Fine-tune the extend end position of a light-duty pressing or stamping operation in 280 to 300 mm increments to accommodate different material thicknesses.
Package Stopper Calibration
Adjust the stopping depth for mixed-size cartons on a packing line by turning the external stop screw, ensuring gentle contact without reprogramming controls.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-20 the Right Cylinder?
The adjustable stroke shines when you need to fine-tune an end position in the field or want one shared spare across slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 300 mm stroke is fairly long, always support the load with an external guide to prevent rod bending and side-load wear. Remember this non-magnet version cannot host sensors.
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 JSIJ63X300-20 FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa.
The nominal 300 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 20 mm on-site, yielding a usable range of 280 to 300 mm. The retract end is fixed. This mechanism only sets the end position; it does not lock the load, so use an external rod lock or pilot-operated check valve if you need to hold a load against air loss.
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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.
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Most inquiries answered within 7-8 hours.
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