Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-50S 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 JSIJ63X300-50S
The nominal 300 mm stroke remains the maximum travel, letting you fine-tune the end position without swapping the actuator. Built with an extruded hard-anodized aluminum barrel, the body is noticeably shorter and more compact than a same-bore ISO 15552 unit. The integrated -S magnet supports CMSE/DMSE sensors in the side grooves.
A G3/8 port feeds the double-acting double rod, while 29 mm adjustable air cushions at both ends manage deceleration. Remember that the cushion only slows the piston near the end of travel; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended load.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50S |
|---|---|
| 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 JSIJ63X300-50S
| 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 JSIJ63X300-50S Is Used
Transfer Push-Off
Pushes parts off a belt at a fixed 300 mm reach, with the 50 mm adjuster dialing in the exact drop point without moving the cylinder mount.
Pallet Stopper Gate
Acts as an adjustable pallet stop where the extend end position must be tuned on-site to accommodate varying pallet overhangs.
Vertical Press Head
Lowers a 79 kg tooling head vertically, using the external adjuster to set the precise pressing depth rather than machining a hard stop.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50S the Right Cylinder?
The -50 mm adjustable window is ideal when you need on-site end-position tuning or want a shared spare across slightly different stroke variants. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. The -S suffix means a magnet is already built in for CMSE/DMSE switches. Because the 300 mm stroke is fairly long, always use an external guide rail to prevent rod bending and premature seal wear from 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 JSIJ63X300-50S FAQ
This 63 mm bore cylinder has a G3/8 port and an M18x1.5 rod thread.
The -50 code means an external stop screw lets you shorten the extend stroke by up to 50 mm on-site. The usable extend range is 250 to 300 mm, with the nominal 300 mm being the maximum travel. The retract end is fixed, and the stop sets the end position but does not lock 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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