Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-40S
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm bore and 250mm 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.
- BoreØ80 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting, adjustable stroke
- Rod threadM22×1.5
- 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 JSIJ80X250-40S
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS profile cylinder is built for applications needing on-site end-position tuning. An external stop screw lets you shorten the extend stroke by up to 40 mm, giving a usable range of 210 to 250 mm while the retract end stays fixed. The extruded hard-anodized aluminum barrel keeps the overall body more compact than a same-bore ISO 15552 unit. Because the -S suffix denotes a built-in piston magnet, the body accepts CMSE or DMSE sensors directly in its side grooves.
In practical terms, the bore handles a safe working load of about 1508 N, which translates to lifting roughly 128 kg vertically with a 2:1 safety margin. Pneumatic connections use a G3/8 port, and adjustable air cushions at both ends absorb kinetic energy near the stroke limits. Remember that the cushion only decelerates the piston; the cylinder will drift 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 JSIJ80X250-40S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G3/8 |
| Rod thread | M22×1.5 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-40S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 80 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSIJ80X250-40S Is Used
Press Position Trimming
Use the 40 mm extend window to fine-tune the exact bottoming position of a light stamping or pressing head on the fly without changing the cylinder body.
Variable Stroke Diverting
Adjust the pusher extension between 210 and 250 mm to handle different package widths on a sorting line while maintaining a fixed retract distance.
Pallet Stop Tuning
Dial in the exact stopping point for various pallet depths at a packing station, using the external stop screw to compensate for fixture wear over time.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-40S the Right Cylinder?
When sizing this actuator, stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N, letting you match the load precisely. The 40 mm adjustable window is ideal for sharing a single spare across several stroke variants or fine-tuning a final press position without swapping the cylinder. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The integrated magnet supports CMSE/DMSE switches for position feedback. Because the 250 mm stroke exceeds 300 mm, ensure you guide the load externally to prevent side-load damage to the rod seal.
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 JSIJ80X250-40S FAQ
At 0.5 MPa this 80 mm bore cylinder pushes with 2513 N and pulls with 2268 N. At 0.7 MPa the push is 3518 N and the pull is 3175 N. The theoretical maximum force is 513 kgf at 1.0 MPa. The air port size is G3/8.
The nominal 250 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke by up to 40 mm on site, giving a usable range of 210 to 250 mm. The retract end position remains fixed.
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