
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-100 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 300mm 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 flexibility to long-stroke tasks. Its external adjuster lets you shorten the extend stroke by up to 100 mm, giving a usable range of 200 to 300 mm without changing the unit. Built with an extruded hard-anodized aluminum barrel, it is more compact than an ISO 15552 cylinder of the same bore. The retract end remains fixed, and the G1/4 port matches the 50 mm standard.
In practical terms it handles about 589 N of real work, roughly 50 kg lifted vertically with a 2:1 margin. The adjustable air cushions at both ends absorb end-of-stroke shock, but remember the stop screw sets position only—it is not a load lock. Because this is a non-magnet SKU, it cannot take a CMSE or DMSE sensor; add the -S variant if you need position detection.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-100 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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). |
| ×300 | 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 200 to 300 mm extend reach on-site to push parts of varying widths off a belt without swapping cylinders.
Dial in the exact 50 mm bore stopping position for different box formats, using the 100 mm window for quick changeovers.
Adjust the extend stroke on the fly to route differing pallet sizes, relying on the 982 N push force at 0.5 MPa to move loads.
When sizing this 50 mm bore, stepping down to a 40 mm bore drops the 0.5 MPa push force to 628 N, while stepping up to a 63 mm bore raises it to 1559 N. The 100 mm adjuster window is ideal for sharing a spare across stroke variants or fine-tuning the end position on-site. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. Because the 300 mm stroke is long, always support the load with an external guide to prevent rod bending and side-load damage. Without the -S option, magnetic sensing is impossible.
Quick checklist
This 50 mm bore cylinder pushes 982 N and pulls 825 N at 0.5 MPa, pushes 1374 N and pulls 1154 N at 0.7 MPa, and reaches a theoretical max of 200 kgf at 1.0 MPa. It uses a G1/4 air port and an M18x1.5 rod-end thread.
The nominal 300 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 100 mm on-site, giving a usable extend range of 200 to 300 mm. The retract end is fixed, and this stop sets position only—it will not hold a load on air loss.
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