Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-50S
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 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 JSIJ80X125-50S
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS actuator brings on-site extend stroke tuning to heavy pneumatics. The hard-anodized aluminum profile barrel keeps the total length shorter than a same-bore ISO 15552 unit, saving valuable machine space. A built-in piston magnet ships standard, ready for CMSE or DMSE switches to drop directly into the side grooves.
The external stop screw provides a 50 mm adjustment window, letting you trim the usable extend stroke down to 75 mm without swapping the cylinder. The retract end remains fixed, while the G3/8 port feeds the 25 mm rod for solid thrust. In practical terms it handles about 1508 N of real work, which translates to lifting roughly 128 kg vertically with a safe 2:1 margin. The adjustable air cushions decelerate the load near the ends, but remember a plain cylinder drifts on air loss, so fit an external rod lock for held loads.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-50S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 JSIJ80X125-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 80 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ80X125-50S Is Used
Press Stroke Tuning
Dial in the exact 75 to 125 mm extend contact point on a light assembly press without machining new spacers.
Variable Transfer Stops
Adjust the extend stop length on the fly to route different pallet sizes through a single conveyor lane.
Lift Station Height Trim
Fine-tune the vertical lift end position to match varying package heights before triggering the discharge valve.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X125-50S the Right Cylinder?
When sizing this 80 mm bore, stepping down to a 63 mm unit yields 1559 N of push at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927 N. The 50 mm extend-shortening window is ideal when you need to fine-tune end positions on-site or want a single spare cylinder to cover several stroke variants. You can mount it using the FA, LB, TC, TCM1, or TCM2 brackets. The included -S magnet supports CMSE/DMSE sensors for position feedback. Because the 125 mm stroke exceeds 300 mm, always guide the load to prevent 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 JSIJ80X125-50S FAQ
At 0.5 MPa it pushes 2513 N and pulls 2268 N. At 0.7 MPa it pushes 3518 N and pulls 3175 N. The theoretical maximum force is 513 kgf at 1.0 MPa. This 80 mm bore unit uses a G3/8 port and a 25 mm piston rod.
The nominal 125 mm extend stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 50 mm, giving a usable extend range of 75 to 125 mm. The retract end position is fixed and cannot be adjusted.
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Standard models are processed and dispatched in 3-5 business days.
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