
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X500-75 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 500mm 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.
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for on-site end-position tuning. An external stop screw lets you shorten the extend stroke by up to 75 mm, yielding a usable 425 to 500 mm range while the retract end remains fixed. This mechanism allows you to fine-tune the endpoint without physically swapping the cylinder. The extruded hard-anodized aluminium profile is significantly shorter than an ISO 15552 cylinder of the same bore.
In practical terms, it handles about 377 N of real work, which equates to roughly 32 kg lifted vertically with a 2:1 safety margin. The unit features a 16 mm rod, an M14x1.5 rod-end thread, and a G1/4 air port. Adjustable air cushions of 20.5 mm at each end absorb impact. Because this specific SKU lacks a magnet, it cannot accept CMSE or DMSE sensors. Note that a plain cylinder does not hold load on air loss; use an external rod lock or pilot-operated check valve for secure holding.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X500-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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). |
| ×500 | 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 425 to 500 mm extend reach on-site to match varying package widths on a sorting line without replacing the actuator.
Set precise material end-positions for different part lengths, using the 75 mm external adjuster window to dial in the exact push distance.
Dial in the exact push-off distance for changing carton sizes, relying on the 628 N thrust to clear products off the line consistently.
When sizing this 40 mm bore, compare it against neighbouring bores: a 32 mm bore yields 402 N push at 0.5 MPa, whereas a 50 mm bore provides 982 N. The adjustable stroke is ideal when you need a shared spare across slightly different stroke variants or want on-site end-position tuning without changing the cylinder. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. For this 500 mm stroke, external guides are strongly recommended to prevent rod bending and manage side loads. To add position sensing, you must select the -S magnet variant, as this base SKU cannot take a sensor.
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. This 40 mm bore unit uses a G1/4 air port and a 16 mm rod with an M14x1.5 thread.
The nominal 500 mm stroke is the maximum extend length. The external stop screw allows you to shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 425 to 500 mm. The retract end is fixed, and this stop mechanism only sets the end position; it is not a load lock.
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