Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 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 JSIJ40X300-30
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder features an on-site extend-stroke adjuster. A hardened aluminum extrusion replaces bulky rods, making the body shorter and more compact than a same-bore ISO 15552 unit. The external stop screw provides a 30 mm shortening window, allowing you to fine-tune the end position from 270 to 300 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. Pneumatic connections use a G1/4 port.
This double-acting single-rod actuator runs at 30-800 mm/s and includes adjustable air cushions at both ends to decelerate the payload smoothly. Because this specific SKU lacks the -S magnet option, it cannot accept CMSE or DMSE sensors for position detection. Note that the cushion only slows the piston near the end of travel; it will not hold a load on air loss, so fit an external rod lock or pilot-operated check valve for vertical safety. With a 300 mm stroke, always support the load with external guides to prevent rod bending.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 JSIJ40X300-30
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSIJ40X300-30 Is Used
Transfer Push-off
Fine-tune the 270 to 300 mm extend reach to push parts of varying widths off a moving belt without repositioning the cylinder mount.
Carton Flap Folding
Adjust the external stopper on-site to perfectly fold different box sizes, using the 628 N push force to crease heavy cardboard cleanly.
Light Press Fit
Lower a 32 kg vertical payload with a 2:1 safety margin and dial in the exact bottoming position for inserting delicate fittings.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30 the Right Cylinder?
When sizing this 40 mm bore model, compare it against the neighboring 32 mm and 50 mm options. The 32 mm bore yields 402 N push at 0.5 MPa for lighter duties, while the 50 mm bore jumps to 982 N if your payload exceeds the 377 N safe working load calculated here. The 30 mm adjustable window is highly useful when you need to synchronize multiple end positions across a machine or standardize a single spare part for slightly different stroke lengths. JSIJ mounting choices include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Remember that this non-magnet version cannot host a sensor; select the -S variant if you require CMSE or DMSE switches. Finally, for this 300 mm stroke, always use external guide rails to absorb side loads and protect the 16 mm rod from bending.
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 JSIJ40X300-30 FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it yields 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port size is G1/4.
The nominal 300 mm stroke is the maximum extend length. An external stop screw lets you shorten the extend stroke by up to 30 mm on-site, giving a usable range of 270 to 300 mm. The retract end remains fixed, and this mechanism only sets the end position; it does not lock the load.
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