Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X25-20
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X25-20 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 25mm 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
- Stroke25 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 JSIJ63X25-20
Its extruded hard-anodized aluminium barrel omits tie rods, making the body shorter and more compact than a same-bore ISO 15552 unit. The G3/8 port feeds the 30-800 mm/s speed range, while adjustable air cushions of 29 mm at each end absorb impact.
The external stop screw provides a 20 mm window to shorten the extend stroke on site, letting you dial the usable travel down from the 25 mm maximum to 5 mm without swapping the cylinder. This on-site adjustability means a single spare can cover several stroke variants. Note that this plain SKU lacks a magnet and cannot take a CMSE/DMSE sensor.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X25-20 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X25-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 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 JSIJ63X25-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | 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 JSIJ63X25-20 Is Used
Short-Stroke Clamping
Dial in the exact clamping contact point on-site using the 20 mm adjuster window, ensuring delicate parts are held firmly without crushing.
Compact Ejection
Fit the shorter JIS profile body into tight machine bays to eject small components, trimming the extend stroke down to 5 mm for rapid cycling.
Positioning Stops
Serve as an adjustable mechanical stop for feeding mechanisms, allowing operators to fine-tune the 25 mm extend limit without changing the hardware.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X25-20 the Right Cylinder?
The JSIJ series supports Basic, FA, LB, TC, TCM1, and TCM2 mounts. The 20 mm adjustable window is ideal for sharing a single spare across multiple short-stroke variants or fine-tuning a clamping end position. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; order the -S variant for CMSE/DMSE sensors. For any stroke over 300 mm, fit external guide rails to prevent side-load damage.
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 JSIJ63X25-20 FAQ
This 63 mm bore cylinder pushes 1559 N and pulls 1402 N at 0.5 MPa. 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 air port and features a 29 mm adjustable air cushion at both ends.
The nominal extend stroke is 25 mm, which is the maximum travel. The external adjuster provides a 20 mm window to shorten that extend stroke on site, giving a usable range of 5 to 25 mm. The retract end is fixed. This stop only sets the end position; it is not a load lock.
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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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