
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X175-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 175mm 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 compact installations. The extruded hard-anodized aluminum body is noticeably shorter than an ISO 15552 cylinder of the same bore. It handles about 377 N of real work safely, which translates to lifting roughly 32 kg vertically with a 2:1 margin.
The -30 code means an external adjuster can shorten the extend stroke on site by up to 30 mm, giving a usable range of 145 to 175 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder. This -S SKU includes a piston magnet for CMSE/DMSE sensors in the side grooves. Pneumatic connections use a G1/4 port, and adjustable air cushions of 20.5 mm decelerate the load at each end.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X175-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 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). |
| ×175 | 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 145 to 175 mm extend position on-site for material pressing tasks that require frequent depth changes without changing fixtures.
Fine-tune the diverting stroke length on a conveyor to accommodate different package sizes while using the integrated magnet for position confirmation.
Lift loads up to 32 kg vertically and adjust the extend end-point by up to 30 mm to match varying shelf heights in compact storage machines.
When sizing, step down to a 32 mm bore for lighter duty (402 N push at 0.5 MPa) or up to a 50 mm bore if you need 982 N. The 40 mm bore here gives 528 N of pull force at 0.5 MPa, hitting a solid middle ground. The adjustable stroke is ideal when you need on-site end-position tuning or want a shared spare across slightly different stroke variants. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a 175 mm stroke, mount a guide to prevent side-load wear on the rod. The -S magnet supports drop-in CMSE/DMSE switches.
Quick checklist
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa it pushes 879 N and pulls 739 N. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port is G1/4.
The nominal 175 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 30 mm on site, giving a usable range of 145 to 175 mm. The retract end is fixed. This stop sets the end position and is not a load lock.
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