Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-30
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X125-30 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 JSIJ63X125-30
An external stop screw lets you shorten the forward stroke by up to 30 mm, giving a usable range of 95 to 125 mm without swapping the actuator. The hard-anodized aluminum barrel uses no external tie rods, making the body noticeably shorter and more compact than a same-bore ISO 15552 unit.
This double-acting double-rod actuator runs at 30-800 mm/s through its G3/8 port, with a 20 mm rod and M18x1.5 thread. Adjustable 29 mm air cushions decelerate the piston smoothly at both ends. This specific SKU lacks a magnet and cannot accept CMSE or DMSE sensors. The stop mechanism sets the end position but does not lock the load; for holding against gravity on air loss, fit an external rod lock or pilot-operated check valve.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-30 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-30 |
|---|---|
| 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 JSIJ63X125-30
| 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 JSIJ63X125-30 Is Used
Clamp Stroke Tuning
Dial in the exact 95 to 125 mm forward clamping distance on-site to accommodate varying part widths without machining custom spacers.
Transfer Diverter
Set the precise pusher extension to deflect packages of different sizes onto a secondary line, using the external stop to prevent over-travel.
Vertical Lift Stop
Lift loads up to 79 kg and use the adjuster to set a strict 110 mm raise limit, ensuring the payload stops safely before hitting upper machine guards.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-30 the Right Cylinder?
The 30 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or fine-tuning the end position during machine commissioning. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this SKU has no -S suffix, it cannot host magnetic sensors. For any stroke over 300 mm, always guide the load to prevent side-load damage to the front cover.
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 JSIJ63X125-30 FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa. The air port size is G3/8, the rod is 20 mm with an M18x1.5 thread, and it features 29 mm adjustable air cushions.
The nominal stroke is 125 mm, which is the maximum forward travel. The external adjuster screw lets you shorten the extend stroke on-site by up to 30 mm, yielding a usable range of 95 to 125 mm. The retract end remains fixed. This mechanism only sets the end position and does not hold the load.
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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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