Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-50S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X125-50S 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 JSIJ63X125-50S
The hard-anodized aluminium barrel keeps the total envelope shorter and more compact than a same-bore ISO 15552 unit.
The -50 code means an external stop screw can shorten the extend stroke by up to 50 mm on-site, giving a usable extend range of 75 to 125 mm while the retract end stays fixed. Because this is an -S SKU, a built-in piston magnet works with CMSE or DMSE switches that drop directly into the side grooves. Air connects via a G3/8 port, and adjustable cushions decelerate the load at both ends.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-50S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-50S |
|---|---|
| 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 JSIJ63X125-50S
| 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 JSIJ63X125-50S Is Used
Press Fit Tuning
Dial in the exact extend contact point within the 75 to 125 mm window to seat delicate bearings without bottoming out the stroke.
Variable Transfer Stops
Adjust the stop finger position on-site by up to 50 mm to accommodate different product lengths running down the same line.
Shared Spare Inventory
Keep one cylinder in stock and set the external stop screw to cover multiple stroke requirements, cutting spare parts storage.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-50S the Right Cylinder?
The 50 mm adjustable window is ideal when you need to share one spare cylinder across several stroke variants or fine-tune a final pressing position without swapping the body. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S magnet supports CMSE/DMSE sensors for position confirmation. For any stroke length at or above 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 JSIJ63X125-50S FAQ
At 0.7 MPa the push is 2182 N and the pull is 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 port and a 20 mm rod.
The nominal stroke is 125 mm, but an external stop screw lets you shorten the extend stroke by up to 50 mm on-site. This gives a usable extend range of 75 to 125 mm, while the retract end remains fixed. The 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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