
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X800-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 800mm 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 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder features an external adjuster that lets you shorten the extend stroke on-site by up to 30 mm. The nominal 800 mm stroke remains the absolute maximum, giving you a usable extend range of 770 to 800 mm to fine-tune the end position without swapping the actuator. Its extruded hard-anodized aluminum barrel omits tie rods entirely, making the body noticeably shorter and more compact than a same-bore ISO 15552 cylinder.
Equipped with a -S suffix, the built-in piston magnet accepts CMSE or DMSE reed and electronic switches that drop directly into the side grooves. The G1/4 air port feeds the double-acting single-rod mechanism, while adjustable air cushions at both ends absorb kinetic energy near stroke extremes. Factoring in a realistic 60 percent efficiency margin, this actuator handles about 589 N of actual work, translating to a safe vertical lift of roughly 50 kg.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X800-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 800 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). |
| ×800 | 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.
Pushes packages across a wide transfer belt, using the 30 mm adjuster to dial in the exact divert distance without repositioning the cylinder mount.
Raises a 50 kg payload to a 770 mm shelf height, relying on the adjustable cushion to decelerate the load smoothly at the upper end.
Secures parts of varying widths on a single fixture by backing off the extend stroke from 800 mm down to 770 mm for shorter components.
When sizing this 50 mm bore actuator, the adjacent 40 mm option yields 628 N of push force at 0.5 MPa, whereas stepping up to the 63 mm bore provides 1559 N. The 30 mm adjustable window is particularly useful for sharing a single spare cylinder across multiple machines that require slightly different extend end-positions. Mounting choices for this JIS series include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke extends to 800 mm, you must support the load with external guides to prevent rod bending and excessive side-loading. The included -S magnet enables precise end-of-stroke detection using CMSE or DMSE sensors.
Quick checklist
This 50 mm bore cylinder uses a G1/4 air port and a 20 mm piston rod. It generates 982 N of push force and 825 N of pull force at 0.5 MPa. At 0.7 MPa, the push force is 1374 N and the pull force is 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa.
An external stop screw allows you to shorten the extend stroke on-site by up to 30 mm. The nominal 800 mm stroke is the maximum, so the usable extend range is 770 to 800 mm. The retract end remains fixed, and the stop screw only sets the end position rather than locking the load.
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