
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X160-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 160mm 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 keeps machinery compact by being shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium extruded barrel removes external tie rods, yielding a clean profile that drops easily into tight assemblies. A built-in piston magnet ships as standard, ready for CMSE or DMSE reed and electronic switches in the side grooves.
The -20 code defines an external adjuster window that shortens the on-site extend stroke by up to 20 mm, meaning your usable forward travel spans 140 to 160 mm while the retract end remains fixed. This lets you fine-tune the end position without swapping the actuator. Operating through a G1/4 port, it handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin. The adjustable air cushion decelerates the load near stroke end, but remember a plain cylinder drifts on air loss—use an external rod lock for held loads.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X160-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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). |
| ×160 | 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 140 to 160 mm clamping reach on-site using the external adjuster to compensate for fixture tolerances without changing the cylinder.
Shorten the extend stroke by up to 20 mm to alter the push-off distance of parts onto a conveyor, accommodating varied product sizes on the fly.
Leverage the shorter JIS profile body to fit a diverting mechanism into tight conveyor gaps while maintaining precise stopping points.
When sizing, the 32 mm bore offers 402 N push at 0.5 MPa for lighter duties, while the 50 mm bore steps up to 982 N if this 40 mm unit is undersized. The 20 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or trimming end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this SKU includes the -S magnet, you can fit CMSE/DMSE sensors directly; a no-S version cannot take them. For any stroke at or over 300 mm, always guide the load to prevent side-load wear on the rod seals.
Quick checklist
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. This 40 mm bore model uses a G1/4 air port.
The nominal 160 mm stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 140 to 160 mm. The retract end is fixed, and this mechanism sets the end position rather than locking the load.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
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