Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-40S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X275-40S 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 JSIJ63X275-40S
The hard-anodized extruded aluminum profile keeps the assembly light while housing adjustable air cushions at both ends. Because the piston carries a magnet, the -S suffix means you can drop CMSE or DMSE reed and electronic switches directly into the side grooves for exact position detection.
The -40 code defines an external stop screw window that lets you shorten the extend stroke on site by up to 40 mm, giving a usable forward travel of 235 to 275 mm without swapping the cylinder. Pneumatic connections use a G3/8 port, and the retract end remains fixed while you fine-tune the forward endpoint.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-40S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-40S |
|---|---|
| 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 JSIJ63X275-40S
| 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 JSIJ63X275-40S Is Used
Press Fit Tuning
Dial in the exact 235 to 275 mm extend position on site to seat bearings without changing the physical cylinder length.
Divertor Gate Adjustment
Fine-tune the push stroke window by up to 40 mm to accommodate different package sizes on the fly.
Vertical Lift Stops
Lift loads up to 79 kg safely and adjust the forward stop to set precise stacking heights.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X275-40S the Right Cylinder?
The adjustable stroke shines when you need to fine-tune an end position on the machine or want a single spare cylinder that can cover several stroke variants by dialing in the 235 to 275 mm range. You can mount it using the basic body, FA, LB, TC, TCM1, or TCM2 brackets. Because the stroke is 275 mm, always guide the load externally to prevent rod side-loading and premature seal wear. The built-in magnet supports CMSE/DMSE sensors for precise switching.
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 JSIJ63X275-40S 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 maximum force is 318 kgf at 1.0 MPa. The air port size is G3/8.
The -40 means an external adjuster lets you shorten the extend stroke on site by up to 40 mm. The nominal 275 mm stroke is the maximum, so usable forward travel is 235 to 275 mm. The retract end is fixed, and this stop only sets the end position, it does not lock the load.
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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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