Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-75S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-75S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings on-site flexibility to tight machinery. The hard-anodized aluminum barrel omits tie rods entirely, making the body noticeably shorter and more compact than a same-bore ISO 15552 unit. A built-in magnet (-S) allows CMSE or DMSE switches to clip directly into the side grooves for precise position detection.
The external adjuster lets you shorten the extend stroke by up to 75 mm on-site, meaning the nominal 75 mm stroke serves as your maximum travel while the retract end remains fixed. You can fine-tune the end position without swapping the cylinder, handling a safe working load of roughly 589 N or lifting about 50 kg vertically with a 2:1 margin. Pneumatic connections use a G1/4 port, and adjustable air cushions of 20.5 mm decelerate the load smoothly at each end.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-75S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 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 JSIJ50X75-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×75 | 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 JSIJ50X75-75S Is Used
Clamp Position Tuning
Dial in the exact clamping depth on machining fixtures by shortening the extend stroke up to 75 mm without replacing the cylinder.
Transfer Stopper Adjustment
Fine-tune the product stop position on conveyor lines on-site to accommodate varying package sizes using the external adjuster.
Compact Sorting Diverter
Fit a short, JIS-profile diverter into tight sorting chutes while tracking the full extend and retract positions via magnetic switches.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-75S the Right Cylinder?
When sizing this 50 mm bore, compare it against its neighbors: a 40 mm bore yields 628 N push at 0.5 MPa, while a 63 mm bore steps up to 1559 N. The adjustable stroke shines when you need to dial in a final end position on-site or want a single spare cylinder to cover multiple shorter stroke variants. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. The -S magnet enables CMSE/DMSE sensors. Because the stroke here is under 300 mm, side-load risks are minimal, but always guide the load for any longer strokes.
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 JSIJ50X75-75S FAQ
At 0.5 MPa it provides 982 N push and 825 N pull force. At 0.7 MPa it delivers 1374 N push and 1154 N pull. The theoretical maximum force is 200 kgf at 1.0 MPa. This 50 mm bore model uses a G1/4 air port.
The 75 mm nominal stroke is the maximum travel. An external stop screw lets you shorten the extend stroke by up to 75 mm on-site, allowing usable extend strokes from 0 to 75 mm. The retract end is fixed, and this mechanism sets the end position rather than locking the load.
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