Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 400mm 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.
- BoreØ40 mm
- Stroke400 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- CushionAdjustable, 20.5 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for precise on-site end-position tuning. An external adjuster lets you shorten the extend stroke by up to 40 mm, giving a usable forward range of 360-400 mm, while the retract end stays fixed. The extruded hard-anodized aluminium barrel keeps the body more compact than a same-bore ISO 15552 unit, and the G1/4 port handles the air supply.
In practical terms it handles about 377 N of real work, roughly 32 kg lifted vertically with a 2:1 margin. The adjustable air cushions at both ends absorb shock over the 400 mm travel, but remember the cushion only decelerates; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve to hold a suspended load. This non-magnetic SKU cannot take a sensor, whereas the -S variant adds a magnet for CMSE/DMSE switches.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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).
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×400 | 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.
Where the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40 Is Used
Sorter Diverter Tuning
Fine-tunes the 40 mm extend reach on-site to match varying package sizes on a conveyor without changing the entire actuator.
Clamp Position Adjustment
Dials in the exact clamping depth on machining fixtures, using the 360-400 mm window to compensate for part thickness variations.
Pallet Stop Calibration
Adjusts the stopping point for different pallet widths in a packaging line, ensuring precise alignment before stretch wrapping.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40 the Right Cylinder?
Size this 40 mm bore against its neighbours: a 32 mm bore gives 402 N push at 0.5 MPa, while a 50 mm bore jumps to 982 N, so the 40 mm sits perfectly in the middle for moderate loads. The -40 mm adjustable window is ideal when you need to fine-tune the extend end position on-site without swapping the cylinder, or when consolidating spare parts across slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the 400 mm stroke creates leverage, always use an external guide rail to prevent rod bending and side-load wear. For position feedback, select the -S magnet version to use CMSE/DMSE sensors, as this base SKU cannot accept them.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40 FAQ
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. It uses a G1/4 air port and features a 16 mm piston rod with M14x1.5 rod-end thread.
The 400 mm nominal stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, giving a usable range of 360-400 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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