Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30S 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 JSIJ50X75-30S
Delivering 982 N of push force at 0.5 MPa, this JIS profile cylinder keeps your envelope tight because it is shorter and more compact than a same-bore ISO 15552 unit. The hard-anodized aluminium barrel uses no tie rods, and the G1/4 port matches the 50 mm bore. An external stop screw lets you trim the extend stroke by up to 30 mm on site, so the usable forward travel is 45 to 75 mm while the retract end stays fixed.
With a safe working load around 589 N, it handles roughly 50 kg lifted vertically with a 2:1 margin. The -S suffix means a built-in piston magnet is present, allowing CMSE or DMSE sensors to drop directly into the side grooves for position detection. Note that the adjustable stop sets the end position but does not lock the load; you will need an external rod lock or pilot-operated check valve to hold a suspended weight safely.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30S |
|---|---|
| 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 JSIJ50X75-30S
| 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 JSIJ50X75-30S Is Used
Clamp Stroke Tuning
Dial in the exact 45 to 75 mm forward clamp position on-site to accommodate different part thicknesses without changing the cylinder.
Transfer Diverter
Adjust the extend stop to set the precise pusher distance for sorting varying box widths on a packaging line.
Shared Spare Inventory
Keep one cylinder as a universal spare for multiple 50 mm machines, trimming the forward stroke up to 30 mm to fit each station.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30S the Right Cylinder?
When sizing, step down to a 40 mm bore for lighter loads (saving space and air) or up to a 63 mm bore if you need 1559 N of push at 0.5 MPa. The 50 mm bore sits in a strong middle ground. The 30 mm adjustable window is ideal for sharing one spare cylinder across several stroke variants or fine-tuning the end position on the machine without swapping the whole unit. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is a -S model, it arrives magnet-ready for CMSE/DMSE switches. For any stroke at or above 300 mm, always guide the load to prevent side-load damage to the front cover.
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 JSIJ50X75-30S 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. It uses a G1/4 port.
The nominal stroke is 75 mm, which is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 30 mm, giving a usable forward range of 45 to 75 mm. The retract end is fixed, and the adjuster sets the end position rather than locking the load.
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