Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20S
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20S 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 JSIJ80X125-20S
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS profile cylinder is built for applications needing exact end-position tuning on the floor. The hard-anodized aluminum barrel keeps the total envelope more compact than a same-bore ISO 15552 unit. A built-in piston magnet (-S) accepts CMSE/DMSE reed or electronic switches in the side grooves.
The external stop screw provides a 20 mm window to shorten the extend stroke on-site, giving a usable forward range of 105-125 mm while the retract end stays fixed. 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, and adjustable cushions decelerate the load at both ends.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20S |
|---|---|
| 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 JSIJ80X125-20S
| 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 JSIJ80X125-20S Is Used
Press Fit Tuning
Dial in the exact seating depth of a bearing press by trimming the extend stroke up to 20 mm on-site, avoiding costly mechanical shimming.
Variable Transfer Stop
Adjust the extend stop position for different package widths on a sorting line without swapping out the entire actuator assembly.
Pallet Positioning
Fine-tune the push-off distance when handling varied pallet depths, using the magnetic sensors to confirm the adjusted end point.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-20S the Right Cylinder?
When sizing, the adjacent 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore steps up to 3927 N, so this 80 mm unit sits perfectly in the mid-heavy range. The 20 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or fine-tuning a press fit without remounting the cylinder. Choose from Basic, FA, LB, TC, TCM1, or TCM2 mounts, and because this SKU includes the -S magnet, you can fit CMSE/DMSE sensors directly. For any stroke over 300 mm, always use a guide rail to prevent side-load wear on the rod.
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 JSIJ80X125-20S FAQ
At 0.5 MPa it provides 2513 N push and 2268 N pull. At 0.7 MPa it delivers 3518 N push and 3175 N pull. 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. An external stop screw lets you shorten the forward stroke by up to 20 mm on-site, giving a usable extend range of 105-125 mm. The retract end remains fixed, and this stop only sets position—it does not lock the load.
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Standard models are processed and dispatched in 3-5 business days.
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