Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X225-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X225-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 225mm 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
- Stroke225 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 JSIJ50X225-40S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for applications needing exact end-position tuning on site. The extruded hard-anodized aluminium barrel omits tie rods, making the body shorter and more compact than a same-bore ISO 15552 unit. A G1/4 port feeds the 30-800 mm/s speed range, while adjustable air cushions of 20.5 mm decelerate the 20 mm rod at each end.
The -40 code means an external adjuster can shorten the extend stroke by up to 40 mm, giving a usable range of 185-225 mm without changing the cylinder itself; the retract end remains fixed. The -S suffix adds a piston magnet for CMSE/DMSE switches in the side grooves. Factoring in a 60% safety margin, it handles about 589 N of real work, which translates to lifting roughly 50 kg vertically. Note that the cushion only decelerates; use an external rod lock or pilot-operated check valve to hold a load on air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X225-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X225-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 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 JSIJ50X225-40S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×225 | 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 JSIJ50X225-40S Is Used
Clamp Position Trimming
Dial in the exact 185-225 mm extend reach on a machining fixture using the external adjuster to compensate for varying part tolerances without swapping cylinders.
Transfer Gate Stopper
Fine-tune the stopping point of a diverter gate on-site by shortening the extend stroke up to 40 mm, ensuring packages route correctly without re-engineering the mount.
Vertical Lift Diverter
Lift roughly 50 kg loads vertically using the 982 N push force, adjusting the extend end-position to clear varying pallet heights while relying on side-groove sensors.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X225-40S the Right Cylinder?
Size this 50 mm bore against its neighbours: a 40 mm bore gives 628 N push at 0.5 MPa, while a 63 mm bore yields 1559 N. The adjustable stroke is ideal when you want a shared spare across stroke variants or need fine end-position tuning on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S magnet supports CMSE/DMSE sensors. Because the 225 mm stroke exceeds 300 mm, ensure external guide rails to prevent side-load damage.
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 JSIJ50X225-40S 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 is 200 kgf at 1.0 MPa. The air port is G1/4, the rod is 20 mm with an M18x1.5 thread, and it has 20.5 mm adjustable cushions.
The nominal 225 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 40 mm on-site, giving a usable extend range of 185-225 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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