The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X150-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 150mm 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 brings on-site extend-stroke flexibility to mid-range pneumatic setups. The hard-anodized aluminum barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit, easily fitting tight machine envelopes.
The external -20 code adjuster lets you shorten the extend stroke by up to 20 mm on-site, dropping the usable extension from 150 mm down to 130 mm without swapping the cylinder. This on-site tuning is ideal for dialing in exact end positions. It handles a safe working load of about 589 N, which translates to lifting roughly 50 kg vertically with a 2:1 margin. Air connects via a G1/4 port, and the retract end remains fixed.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X150-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 150 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). |
| ×150 | 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 clamping reach on machining fixtures by shortening the 150 mm extend stroke up to 20 mm on-site without replacing the cylinder.
Adjust the pusher extension length on-site to accommodate different product widths on a packaging line, ensuring precise diversion without mechanical rebuilds.
Lift approximately 50 kg of goods vertically and fine-tune the upper stop position by up to 20 mm to prevent over-travel in tight stacking zones.
When sizing this unit, the 40 mm bore offers 628 N push at 0.5 MPa for lighter duties, while the 63 mm bore jumps to 1559 N for heavier needs. The 20 mm adjustable window is highly useful when you need to fine-tune end positions across multiple stations or share a single spare cylinder across slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this SKU lacks the -S suffix, it cannot accept a magnetic sensor; order the -S variant for CMSE or DMSE switches. For any stroke at or above 300 mm, always use a guide rail to prevent side-load damage.
Quick checklist
This 50 mm bore cylinder pushes 982 N and pulls 825 N at 0.5 MPa. At 0.7 MPa it pushes 1374 N and pulls 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. The air port size is G1/4.
The -20 indicates an external adjuster that lets you shorten the extend stroke by up to 20 mm on-site. The nominal 150 mm stroke is the maximum, so the usable extend range is 130 to 150 mm. The retract end is fixed, and the adjuster sets the end position rather than holding the load.
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