Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20 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 JSIJ80X125-20
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS actuator brings on-site flexibility to demanding pneumatics. It handles about 1508 N of real work safely, which means you can lift roughly 128 kg vertically with a 2:1 margin. The hard-anodized aluminum profile barrel keeps the total length shorter than a same-bore ISO 15552 cylinder, and the G3/8 air port matches the 25 mm piston rod for robust flow.
The external adjuster lets you shorten the extend stroke by up to 20 mm, giving a usable forward range of 105 to 125 mm without changing the cylinder itself. This on-site tuning is perfect for dialing in exact end positions, while the retract end remains fixed. Note that this specific SKU lacks a magnet, so it cannot take a CMSE or DMSE sensor switch.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20 |
|---|---|
| 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 JSIJ80X125-20
| 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 JSIJ80X125-20 Is Used
Press Stroke Tuning
Dial in the exact 105 to 125 mm extend reach on a light assembly press, using the external adjuster to compensate for varying material thicknesses without swapping actuators.
Variable Transfer Stops
Act as an adjustable flight stop on a conveyor line where product lengths change, retracting to a fixed home position but extending to custom shortened distances on the fly.
Pallet Positioning
Push heavy pallets into a wrapping station, leveraging the 2513 N push force and tweaking the 20 mm window to match different pallet widths perfectly.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20 the Right Cylinder?
When sizing this model, the 63 mm bore offers 1559 N push at 0.5 MPa for lighter jobs, while stepping up to the 100 mm bore yields 3927 N if you need more muscle. The 20 mm adjuster window is invaluable when you want a shared spare across slightly different stroke variants or need to fine-tune a final end position in the field. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. Because the 125 mm stroke is relatively short, side-load stress is minimal, but for any stroke reaching 300 mm or more you should always guide the load to prevent rod binding.
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 JSIJ80X125-20 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. This 80 mm bore cylinder uses a G3/8 air port and features a 25 mm piston rod with an M22x1.5 thread.
The -20 code means an external stop screw lets you shorten the extend stroke by up to 20 mm on-site, giving a usable forward range of 105 to 125 mm. The nominal 125 mm stroke is the maximum, and the retract end is fixed. This stop only sets the end position; it is not a load lock, so you need an external rod lock or pilot-operated check valve to hold a load vertically.
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