Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-20
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 350mm 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
- Stroke350 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 JSIJ40X350-20
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings a compact footprint to longer-trroke tasks. The hard-anodized aluminum barrel leaves out external tie rods, making the body shorter than a same-bore ISO 15552 unit while keeping forces identical to the base single-rod JSI line. It handles about 377 N of real work, which means you can lift roughly 32 kg vertically with a 2:1 safety margin.
The -20 code defines a 20 mm external adjuster window that lets you shorten the extend stroke on site from the 350 mm maximum down to 330 mm. You fine-tune the end position mechanically without swapping the cylinder, and the retract end stays fixed. Air connects via the G1/4 port, and adjustable air cushions of 20.5 mm at each end absorb impact. Note that this specific SKU lacks the -S magnet, so it cannot accept CMSE or DMSE sensors.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-20 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 JSIJ40X350-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×350 | 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 JSIJ40X350-20 Is Used
Transfer Push-Off
Pushes parts off a belt at 350 mm, with the 20 mm adjuster dialing in the exact eject point for different product widths.
Lift Gate Positioning
Raises a light guard or flap where the 32 kg vertical lift capacity at 0.5 MPa is enough, trimming 10 mm off the stroke for a soft seat.
Carton Diverter
Diverts small cartons on a packing line, using the compact JIS body to fit tight 40 mm bore spaces where ISO 15552 units are too long.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-20 the Right Cylinder?
When sizing, step down to a 32 mm bore for lighter duties (402 N push at 0.5 MPa) or up to a 50 mm bore if you need more thrust (982 N push at 0.5 MPa). The 20 mm adjustable window is ideal for sharing one spare cylinder across several stroke variants or dialing in a final end position on the machine. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 350 mm stroke creates leverage, use an external guide rail to prevent rod bending and side-load damage. This non-magnet version cannot host sensors; choose an -S SKU if you need CMSE or DMSE position detection.
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 JSIJ40X350-20 FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it yields 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port is G1/4.
The 350 mm nominal stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 20 mm on site, giving a usable range of 330-350 mm. The retract end is fixed. This stop sets the end position but does not lock the load.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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