Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 25mm stroke, G1/4 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.
- BoreØ50 mm
- Stroke25 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 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 JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for tight machinery where an external adjuster is essential. The hard-anodized aluminum barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit. A built-in magnet equips it for CMSE or DMSE position switches in the side grooves.
The -30 code means the extend stroke can be shortened on-site by up to 30 mm, letting you fine-tune the end position without swapping the cylinder; the retract end remains fixed. It handles a safe working load of about 589 N, which translates to lifting roughly 50 kg vertically with a 2:1 safety margin. Pneumatic connections use a G1/4 port, and the adjustable air cushions decelerate the load near the ends but do not lock it in place.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | 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 JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S Is Used
Short-Stroke Clamping
Dials in the exact grip on machined parts using the 30 mm extend window to compensate for material thickness variations without retooling.
Transfer Diverter
Pushes lightweight cartons on a packaging line, using the built-in magnet and DMSE switch to confirm the extended divert position.
Compact Part Ejector
Fits into a tight press cell where ISO 15552 bodies are too long, shortening the extend stroke on-site to time the ejection of small components.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S the Right Cylinder?
Size this 50 mm bore against its neighbors: a 40 mm gives 628 N push at 0.5 MPa, while a 63 mm jumps to 1559 N. This model is ideal when you need around 589 N of safe working force in a compact envelope. The 30 mm adjustable window is perfect for sharing one spare cylinder across multiple stroke variants or dialing in a precise end stop on the machine. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix means the piston magnet is already included for drop-in sensors. Because the nominal stroke is 25 mm, side-load guide concerns are minimal, but always support the rod if attaching heavy tooling.
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 JSIJ32~50 Adjustable Cylinder JSIJ50X25-30S FAQ
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa it pushes 1374 N and pulls 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. The air port size is G1/4.
The nominal 25 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 30 mm, allowing fine-tuning of the end position. The retract end is fixed, and this mechanism is for positioning only, not for holding a load under air loss.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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