
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X700-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 700mm 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.
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for on-site stroke tuning. The external stop screw lets you shorten the extend stroke by up to 30 mm, giving a usable range of 670 to 700 mm without swapping the actuator. Its extruded hard-anodized aluminum barrel makes it shorter and more compact than a same-bore ISO 15552 unit. The G1/4 port and M14x1.5 rod thread keep pneumatic integration standard.
With a safe working load around 377 N, it handles roughly 32 kg lifted vertically with a 2:1 margin. The -S suffix means a built-in magnet for CMSE/DMSE sensors in the side grooves. Remember that the air cushion only decelerates the piston; for locked load holding on air loss, add an external rod lock or pilot-operated check valve.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X700-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 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).
| 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.
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×700 | 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.
Fine-tune the 670 to 700 mm extend position on-site to perfectly deflect varying package sizes without changing the cylinder.
Lifts roughly 32 kg vertically using the 628 N push force, with the -S magnet confirming gate position via CMSE sensors.
Fits into tight machine cells thanks to the JIS profile barrel, delivering 879 N at 0.7 MPa for light pressing duties.
When sizing, the 32 mm bore offers 402 N push at 0.5 MPa, while the 50 mm bore jumps to 982 N if you need more force. This 40 mm model hits a solid middle ground at 628 N. The -30 mm adjustable window is ideal when you need to fine-tune the extend end position across multiple stations or keep one shared spare for slight stroke variations. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the stroke is 700 mm, always use external guides to prevent rod bending and side loads.
Quick checklist
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. It uses a G1/4 air port.
The nominal 700 mm stroke is the maximum. An external adjuster lets you shorten the extend stroke on-site by up to 30 mm, yielding a usable range of 670 to 700 mm. The retract end remains fixed, and this mechanism only sets the end position rather than locking the load.
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