Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-75S
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm 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.
- BoreØ80 mm
- Stroke250 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 JSIJ80X250-75S
Generating 2513 N of push force at 0.5 MPa, this 80 mm bore JIS actuator brings on-site extend-stroke flexibility to heavy automation. The external adjuster lets you trim the forward stroke by up to 75 mm, so the usable extend range is 175-250 mm while the retract end stays fixed. You can fine-tune the end position without physically swapping the cylinder. Built with a hard-anodized extruded aluminum profile, the body is noticeably shorter and more compact than a same-bore ISO 15552 unit. It handles about 1508 N of real work safely, which translates to lifting roughly 128 kg vertically with a 2:1 margin.
This double-acting single-rod model carries the -S suffix, meaning it has a built-in piston magnet for CMSE or DMSE sensors that drop directly into the side barrel grooves. Pneumatic connections use a G3/8 port, and the 25 mm rod has an M22x1.5 thread. Adjustable air cushions at both ends absorb kinetic energy over 29 mm. Note that a plain cylinder drifts on air loss; the cushion only decelerates, so fit an external rod lock or pilot-operated check valve if you need to hold a load.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-75S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 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 JSIJ80X250-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 80 | 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 JSIJ80X250-75S Is Used
Press Clamping
Dial in the exact 175-250 mm clamping reach on-site using the external adjuster to accommodate varying material thicknesses without changing the actuator.
Transfer Diversion
Shorten the extend stroke by up to 75 mm to tune the pusher distance for different package widths on a packaging line.
Pallet Positioning
Leverage the 2513 N push force to index heavy pallets, making micro-adjustments to the final stop position during machine commissioning.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X250-75S the Right Cylinder?
When sizing this 80 mm bore, stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa, while stepping up to 100 mm provides 3927 N. The JSIJ series mounting options include FA, LB, TC, TCM1, and TCM2. The -75 mm adjustable window is ideal for sharing a single spare cylinder across multiple machines that need slightly different extend endpoints. Because the 250 mm stroke exceeds 300 mm, always guide the load to prevent side-loading the rod. The -S magnet version supports CMSE/DMSE switches for position confirmation.
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 JSIJ80X250-75S 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. The air port size is G3/8.
The nominal 250 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 175-250 mm. The retract end is fixed, and this mechanism sets end position rather than locking the load.
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