Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-20
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm bore and 50mm 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.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting, adjustable stroke
- Rod threadM22×1.5
- 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 JSIJ80X50-20
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS profile cylinder integrates an external adjuster to fine-tune the extend endpoint on site. The hard-anodized aluminium barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. It connects via a G3/8 port and uses a 25 mm piston rod with an M22x1.5 thread.
The -20 code means you can shorten the 50 mm nominal extend stroke by up to 20 mm without changing the hardware, yielding a usable 30 to 50 mm extend range while the retract end stays fixed. In practice it handles about 1508 N of real work safely, which translates to lifting roughly 128 kg vertically with a 2:1 margin. Note that this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-20 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G3/8 |
| Rod thread | M22×1.5 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 80 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSIJ80X50-20 Is Used
Press Fit Dialing
Fine-tune the 30 to 50 mm extend distance on the factory floor to set precise insertion depths for bearing press operations.
Diverter Gate Tuning
Adjust the extend endpoint by up to 20 mm to perfectly position a sorting gate flap without swapping out the entire actuator.
Pallet Stop Calibration
Regulate the extend stroke on a packaging line to act as a firm physical stop for varying pallet widths at 0.5 MPa working pressure.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-20 the Right Cylinder?
When sizing this unit, stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for sharing a spare across stroke variants or dialing in exact end positions during machine commissioning. You can mount it using basic, FA, LB, TC, TCM1, or TCM2 brackets. Because this is a no-S model, it has no magnet and cannot support position sensing. For any stroke length at or above 300 mm, always use an external guide to prevent side-load damage to the 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 JSIJ80X50-20 FAQ
At 0.5 MPa it provides 2513 N push and 2268 N pull. At 0.7 MPa it yields 3518 N push and 3175 N pull. The theoretical maximum force is 513 kgf at 1.0 MPa. This 80 mm bore unit uses a G3/8 port and features a 29 mm adjustable air cushion at each end.
The -20 code provides an external stop screw that lets you shorten the 50 mm nominal extend stroke by up to 20 mm on site, giving a 30 to 50 mm usable range while the retract end remains fixed. This mechanism only sets the end position and decelerates the piston; it is not a lock. A plain cylinder drifts on air loss, so use an external rod lock or pilot-operated check valve for held loads.
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