
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-100S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 275mm 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 around 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder saves machine space by being noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium extruded barrel keeps the assembly light without external support rods. It feeds via a G1/4 port and carries an M18x1.5 rod thread.
The -100 code means an external adjuster can shorten the extend stroke by up to 100 mm on site, giving a usable 175-275 mm range while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder. The -S suffix adds a piston magnet for CMSE/DMSE sensors in the side grooves. Factoring in a safety margin, it handles about 589 N of real work, roughly 50 kg lifted vertically.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-100S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×275 | 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.
Dial in the exact 175-275 mm extend position on site to seat delicate parts without reprogramming the machine cycle.
Tune the extend stop to deflect different package sizes on a line, using the external adjuster rather than swapping hardware.
Keep one stocked for multiple 50 mm machines, shortening the stroke as needed to match various fixture heights.
At 0.5 MPa this 50 mm bore delivers 982 N push and 825 N pull, sitting neatly between the lighter 40 mm (628 N) and the heavier 63 mm (1559 N) options. The adjustable window shines when you need on-site end-position tuning or want a single shared spare for multiple stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a 275 mm stroke, guide the load to prevent side-load wear on the rod seals. The built-in magnet supports CMSE/DMSE switches.
Quick checklist
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa push is 1374 N and pull is 1154 N. The theoretical maximum is 200 kgf at 1.0 MPa. The air port is G1/4.
The 275 mm nominal stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 100 mm on site, giving a usable range of 175-275 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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