Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-40S
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 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 JSIJ80X125-40S
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS profile cylinder brings an on-site extend-shortening window to heavy pneumatics. The hard-anodized aluminium barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. It handles about 1508 N of real work safely, which translates to roughly 128 kg lifted vertically with a 2:1 margin. Air connects via a G3/8 port.
The -40 code means an external adjuster can trim the extend stroke by up to 40 mm, giving a usable forward range of 85-125 mm without changing the cylinder itself. The retract end remains fixed. Because this is an -S SKU, a built-in piston magnet lets you drop CMSE or DMSE reed and electronic switches directly into the side grooves for precise position sensing.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-40S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 JSIJ80X125-40S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 80 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ80X125-40S Is Used
Press Fit Tuning
Dial in the exact 85-125 mm extend contact point for seating bearings without swapping out the entire actuator body.
Variable Transfer Stops
Adjust the extend length on the fly to handle different package sizes on a single sorting line.
Pallet Positioning
Leverage the 2513 N push force to shift heavy pallets, fine-tuning the stop distance for various pallet depths.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-40S the Right Cylinder?
When sizing, the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore jumps to 3927 N, so the 80 mm sits perfectly in the middle for medium-heavy duty. The adjustable stroke is ideal for sharing one spare across multiple stroke variants or fine-tuning the end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. For any stroke at or over 300 mm, always guide the load 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 JSIJ80X125-40S FAQ
At 0.5 MPa it pushes 2513 N and pulls 2268 N. At 0.7 MPa it pushes 3518 N and pulls 3175 N. The theoretical maximum force is 513 kgf at 1.0 MPa. The air port is G3/8.
The nominal 125 mm extend stroke is the maximum. The external adjuster lets you shorten the forward stroke by up to 40 mm on-site, yielding a usable range of 85-125 mm. The retract end is fixed, and the adjuster sets the end position rather than locking the load.
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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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