Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-50 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 300mm 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
- Stroke300 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 JSIJ63X300-50
The external stop screw lets you shorten the extend stroke on-site by up to 50 mm, giving a usable range of 250 to 300 mm while the retract end stays fixed. You can fine-tune the endpoint without swapping the whole unit, and the hard-anodized aluminum barrel makes it more compact than a same-bore ISO 15552 cylinder.
The G3/8 port feeds a 20 mm rod with an M18x1.5 thread, and adjustable 29 mm air cushions decelerate the piston at both ends. Note this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor. Also, the cushion only slows the piston; because a plain cylinder does not hold load on air loss, fit an external rod lock or pilot-operated check valve if you need to prevent drift.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 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 JSIJ63X300-50
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSIJ63X300-50 Is Used
Press Stroke Tuning
Dial in the exact 250 to 300 mm extend reach on a light assembly press without machining new hardstops.
Variable Transfer Pusher
Adjust the push-out distance on the fly as product sizes change on the packaging line.
Shared Spare Inventory
Keep one cylinder in stock and set the 50 mm window on-site to cover several slightly different 63 mm bore machines.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-50 the Right Cylinder?
The 50 mm adjuster window is ideal when you need to dial in a specific extend end-point across multiple shared spare cylinders. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a 300 mm stroke, always support the load with an external guide to prevent rod bending and side-load wear. This non-magnet version cannot accept a sensor; choose an -S variant if you need CMSE or DMSE switches.
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 JSIJ63X300-50 FAQ
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
The nominal 300 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 50 mm on-site, giving a usable extend range of 250 to 300 mm. The retract end is fixed.
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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.
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Most inquiries answered within 7-8 hours.
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