Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-50S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 250mm 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
- Stroke250 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 JSIJ63X250-50S
The external stop screw lets you shorten the forward travel by up to 50 mm, giving a usable extend range of 200 to 250 mm without swapping the actuator. Its extruded hard-anodized aluminium barrel is noticeably shorter than a same-bore ISO 15552 unit, saving valuable machine space. Because the rod end is M18x1.5 and the air port is G3/8, integration into existing pneumatic schematics is straightforward.
The built-in -S piston magnet accepts CMSE/DMSE reed or electronic switches that mount directly into the side grooves. Remember that the adjustable stop sets the end position but does not lock the load; you will need an external rod lock or pilot-operated check valve to hold a suspended weight securely on air loss.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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 JSIJ63X250-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSIJ63X250-50S Is Used
Press Fit Tuning
Dial in the exact 200 to 250 mm extend position for seating bearings without machining custom spacers or changing the cylinder.
Variable Transfer Stops
Adjust the extend stop on-site to handle different carton widths on a packaging line while maintaining the fixed retract end.
Tiered Lift Stations
Use the 50 mm shortening window to set multiple vertical lift heights from a single actuator model, simplifying maintenance inventory.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50S the Right Cylinder?
The 50 mm adjustable window is especially useful when you want to standardize one spare cylinder across multiple stations that need slightly different extend lengths. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. The -S magnet allows for precise end-of-stroke detection via CMSE/DMSE sensors. For this 250 mm stroke, ensure you use a guide rail to prevent side-load damage to the M18x1.5 rod and 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 JSIJ63X250-50S FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa. It operates at speeds of 30-800 mm/s and features a G3/8 port.
The nominal stroke is 250 mm, which is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 50 mm, giving a usable range of 200 to 250 mm. The retract end remains fixed, and the cushion only decelerates the piston without holding 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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