Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- 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 JSIJ40X75-20S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site extend-stroke flexibility to mid-duty automation. The external stop screw lets you trim the extend stroke by up to 20 mm, giving a usable window of 55 to 75 mm without swapping the actuator. It handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin. An integrated magnet is included for position sensing.
Built with an extruded hard-anodized aluminum barrel, the body is noticeably shorter and more compact than a same-bore ISO 15552 cylinder. The G1/4 port feeds the double-acting single rod, while adjustable air cushions at both ends absorb end-of-stroke impact. Because this is an adjustable-stroke actuator, the retract end remains fixed and the stop screw sets the extend end position. A plain pneumatic cylinder does not hold load on air loss, so fit an external rod lock or pilot-operated check valve if you need true load holding.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 JSIJ40X75-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | 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 JSIJ40X75-20S Is Used
Clamp Stroke Tuning
Dial in the exact clamping reach on machining fixtures by trimming the extend stroke from 75 mm down to 55 mm on the fly.
Variable Length Diverter
Adjust the pusher extension to match different package sizes on a packaging line without changing out the entire actuator.
Compact Sorter Gate
Fit a short-stroke sorting gate into tight machine cells where the shorter JIS profile saves valuable floor space.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-20S the Right Cylinder?
Size this 40 mm bore against the smaller 32 mm option, which yields 402 N of push at 0.5 MPa, or step up to the 50 mm bore for 982 N. The adjustable stroke is ideal when you need to fine-tune the extend end position on the machine or want a single spare part that covers several stroke variants. You can mount it using the FA, LB, TC, TCM1, or TCM2 brackets. The -S suffix means a piston magnet is built in, ready to accept CMSE or DMSE sensors in the side grooves. For any stroke length at or above 300 mm, always guide the load to prevent side-load damage to the rod seals.
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 JSIJ40X75-20S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. This 40 mm bore cylinder uses a G1/4 air port.
The nominal extend stroke is 75 mm, which is the maximum length. The external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 55 to 75 mm. The retract end is fixed, and the stop sets the end position but does not lock the load.
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