Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-10
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X125-10 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke125 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 JSIJ63X125-10
Its extruded hard-anodized aluminium body is noticeably shorter than a same-bore ISO 15552 unit.
The JSIJ63X125-10 uses an external stop screw to shorten the extend stroke on site by up to 10 mm. You get a usable extend range of 115-125 mm from the 125 mm nominal maximum, letting you fine-tune the end position without swapping the cylinder. The retract end remains fixed. This plain SKU lacks a magnet and cannot take CMSE/DMSE sensors.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-10 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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 JSIJ63X125-10
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | 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 JSIJ63X125-10 Is Used
End-Position Trimming
Use the 10 mm extend window to dial in the exact 115-125 mm reach on a clamping fixture without machining new stops.
Transfer Push-off
Pushes parts off a belt with 1559 N at 0.5 MPa, using the adjustable stop to compensate for varying product widths.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-10 the Right Cylinder?
Size this 63 mm bore against the 50 mm and 80 mm options. The adjustable 10 mm window helps when you need to share a spare cylinder across slightly different stroke variants or fine-tune a final end position on-site. Mounting choices include FA, LB, TC, TCM1, and TCM2. For any stroke at or over 300 mm, add an external guide rail to prevent side-load damage. Because this is a no-S model, it cannot accept magnetic switches.
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 JSIJ63X125-10 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. It uses a G3/8 port, a 20 mm rod with an M18x1.5 thread, and 29 mm adjustable air cushions at both ends.
The external stop screw lets you shorten the extend stroke by up to 10 mm on site. The usable extend range is 115-125 mm, with the 125 mm nominal stroke as the maximum. The retract end is fixed. This stop only sets the end position; it does not lock the load.
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1-Year Warranty
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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