Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke400 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- 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 JSIJ50X400-40
Generating 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings compact power to long-stroke tasks. The hard-anodized aluminum barrel omits external tie rods, making the overall body shorter and more compact than a same-bore ISO 15552 unit. It connects via a G1/4 port and moves a 20 mm rod with M18x1.5 threading.
The -40 code means an external adjuster can shorten the 400 mm extend stroke on-site by up to 40 mm, yielding a usable 360-400 mm window without swapping the cylinder. This SKU lacks a magnet, so it cannot take CMSE/DMSE sensors. In practice it handles a safe working load of roughly 589 N, lifting about 50 kg vertically with a 2:1 margin. Note that the 20.5 mm air cushions only decelerate the piston; they do not hold the load on air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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).
Theoretical Output Force (Ø50mm)
| 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.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | 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 JSIJ50X400-40 Is Used
Pusher Detuning
Shorten the extend stroke by up to 40 mm on-site to alter a pusher plate distance without machining new mounts.
Spare Consolidation
Keep one 400 mm cylinder as a universal spare for 360-400 mm extend applications by dialing in the stop screw.
Vertical Lowering
Lower a 50 kg payload using the 0.5 MPa thrust, relying on the 20.5 mm cushions to decelerate at the retract end.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40 the Right Cylinder?
When sizing this 50 mm bore, step down to a 40 mm bore for 628 N push at 0.5 MPa, or step up to a 63 mm bore for 1559 N. The 40 mm external adjuster is ideal for sharing one spare across multiple stroke variants or fine-tuning the end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is a non-magnetized SKU, position sensing is impossible. With a 400 mm stroke, always support the load with external guides to prevent rod bending and side-load damage.
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 JSIJ50X400-40 FAQ
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa it pushes 1374 N and pulls 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa.
The 400 mm nominal stroke is the maximum. An external adjuster lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 360-400 mm, while the retract end stays fixed. This mechanism sets the end position and is not a load lock.
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