Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-30
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-30 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 JSIJ63X250-30
The hard-anodized aluminum extruded barrel leaves out external rods, making the body noticeably shorter and more compact than a same-bore ISO 15552 unit. A G3/8 port feeds the double-acting double-rod piston, while adjustable air cushions of 29 mm decelerate the load at each end.
The -30 suffix denotes an external adjuster that lets you shorten the extend stroke by up to 30 mm on site, giving a usable forward travel range of 220 to 250 mm without swapping the cylinder. Note that this specific SKU lacks the -S magnet option and therefore cannot accept CMSE or DMSE sensors. Furthermore, the air cushion only decelerates the stroke; it does not hold the load on air loss, so fit an external rod lock or pilot-operated check valve if you need drift prevention.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-30 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-30 |
|---|---|
| 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 JSIJ63X250-30
| 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 JSIJ63X250-30 Is Used
Stroke Tuning for Tooling Stops
Dial in the exact 220 to 250 mm extend position on a machining line without machining new hard stops, using the external adjuster to fine-tune part ejection.
Variable-Length Diverter Arm
Adjust the reach of a sorting pusher by up to 30 mm on site to handle different package sizes on the fly while maintaining compact JIS clearances.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-30 the Right Cylinder?
The adjustable stroke feature is particularly useful when you want to standardize one spare cylinder across several slightly different stroke variants, or when final machine timing requires exact end-position tuning on the floor. You can mount it using the FA, LB, TC, TCM1, or TCM2 brackets. Because this is a non-magnetized SKU, it cannot host position sensors; add the -S suffix if you require CMSE or DMSE switches. Finally, for any stroke length at or above 300 mm, always guide the load to prevent excessive side-load wear on 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 JSIJ63X250-30 FAQ
This 63 mm bore cylinder uses a G3/8 port and a 20 mm rod.
The nominal stroke is 250 mm, which is the maximum extend length. The external adjuster lets you shorten the extend stroke by up to 30 mm on site, giving a usable range of 220 to 250 mm. The retract end remains fixed, and the adjuster only sets the end position; it does not lock the load.
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Standard models are processed and dispatched in 3-5 business days.
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