Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-50S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X275-50S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 275mm 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
- Stroke275 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 JSIJ63X275-50S
The external stop screw lets you shorten the extend stroke on site by up to 50 mm, giving a usable range of 225-275 mm while the retract end stays fixed.
The extruded hard-anodized aluminium barrel makes it shorter and more compact than a same-bore ISO 15552 cylinder. This -S SKU includes a built-in piston magnet for CMSE/DMSE sensors that drop directly into the side grooves. The unit features a G3/8 port, an M18x1.5 rod thread, and 29 mm adjustable air cushions at both ends.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-50S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 275 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 JSIJ63X275-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×275 | 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 JSIJ63X275-50S Is Used
Stopper Cylinder Tuning
Fine-tune the 225-275 mm extend length on site to act as an adjustable workpiece stopper without swapping the cylinder.
Diverter Gate Positioning
Set the exact gate extension distance for routing varying package sizes on a packaging line using the 50 mm window.
Shared Spare Inventory
Keep one 275 mm cylinder as a universal spare, dialing the stroke down to 225 mm to fit multiple machine configurations.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-50S the Right Cylinder?
The 50 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or fine-tuning machine setup on site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the -S magnet is present, you can fit CMSE or DMSE switches for position sensing. For any stroke at or over 300 mm, always use a guide rail to prevent side-load damage.
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 JSIJ63X275-50S FAQ
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical max force is 318 kgf at 1.0 MPa. This 63 mm bore model uses a G3/8 port.
The nominal 275 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 50 mm on site, yielding a usable range of 225-275 mm. The retract end is fixed. Note that this mechanism sets the end position and does not hold the load on air loss; use an external rod lock or pilot-operated check valve for that.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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