
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-10S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 50mm 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 saves valuable machine space because it is shorter and more compact than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel uses no tie rods, keeping the body clean. A built-in piston magnet equips the -S variant for CMSE or DMSE reed and electronic switches that drop directly into the side grooves.
The external stop screw lets you fine-tune the extend end position on site, shortening the 50 mm nominal stroke by up to 10 mm for a usable 40 to 50 mm window without swapping the cylinder. 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. Remember that a standard cylinder drifts on air loss; the adjustable cushion only decelerates near the end, so fit an external rod lock or pilot-operated check valve if you need to hold a load.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X50-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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). |
| ×50 | 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.
Trim the 50 mm extend stroke by up to 10 mm on-site to perfect the grip distance on varying part sizes without reprogramming the machine cycle.
Fine-tune the divert arm end-stop on the fly using the external adjuster to handle different package widths on a packing line.
Lift roughly 32 kg vertically using the 628 N push force, fitting the short JIS profile into tight transfer stations where ISO 15552 units are too long.
When sizing this 40 mm bore, step down to a 32 mm bore for lighter 402 N tasks, or move up to a 50 mm bore if you need 982 N of push at 0.5 MPa. The 10 mm adjustable window is ideal for sharing one spare across slight stroke variants and dialing in final end positions on site without machining. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. The -S magnet supports CMSE/DMSE sensors. Because the nominal stroke is 50 mm, side-load guide rules for strokes over 300 mm do not apply here, but always guide the rod end to maximize seal life.
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. The air port size is G1/4.
The nominal 50 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 10 mm, giving a usable extend range of 40 to 50 mm. The retract end remains fixed, and this mechanism sets the end position rather than locking the load.
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