Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-40
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X125-40 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 JSIJ63X125-40
Its extruded hard-anodized aluminum barrel is shorter and more compact than a same-bore ISO 15552 unit.
The external adjuster lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 85-125 mm. You fine-tune the end position without swapping the cylinder, and the nominal 125 mm remains the maximum. This plain SKU lacks a magnet and cannot take a sensor; add the -S variant for CMSE/DMSE switches.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-40 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-40 |
|---|---|
| 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 JSIJ63X125-40
| 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 JSIJ63X125-40 Is Used
Press Fit Tuning
Dial in the exact 85-125 mm extend reach for seating bearings without physically remounting the actuator.
Variable Transfer Stops
Adjust the extend stop on-site to handle different carton widths on a shared packaging line.
Pallet Positioning
Fine-tune the push-off distance for varying pallet depths while maintaining compact JIS dimensions.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-40 the Right Cylinder?
The 40 mm adjuster is perfect for sharing one spare across multiple stroke variants or dialing in final end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this non-magnetic SKU lacks a piston magnet, you cannot fit CMSE or DMSE sensors. For any stroke at or over 300 mm, always guide the load to prevent side-load damage to the rod seals.
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 JSIJ63X125-40 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 is 318 kgf at 1.0 MPa. The air port is G3/8.
An external stop screw shortens the extend stroke by up to 40 mm on-site, giving a usable range of 85-125 mm. The nominal 125 mm is the maximum. The retract end is fixed. This stop sets the end position and is not a load lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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