Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40 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 JSIJ40X350-40
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for tight machinery layouts where an external adjuster simplifies final positioning. The hard-anodized aluminium barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. A G1/4 port feeds the double-acting single rod, and the on-site stop screw provides a 40 mm shortening window so usable extend travel spans 310 to 350 mm.
The mechanism lets technicians fine-tune the extend end point without swapping the cylinder, meaning one spare can cover several stroke variants. It handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin. Note this non-magnet SKU cannot take a sensor; adding the -S option enables CMSE/DMSE switches. The retract end is fixed, and the adjustable air cushions only decelerate the piston, so fit an external rod lock for held loads.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40 |
|---|---|
| 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 JSIJ40X350-40
| 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 JSIJ40X350-40 Is Used
Conveyor Diverter Gate
Tunes the extend stroke on-site to set the exact gate opening width for different package sizes without remounting the actuator.
Carton Flap Folder
Adjusts the extend end position to accommodate varying box heights on a packaging line, ensuring precise folding pressure.
Light Part Pusher
Provides 628 N of push force to index lightweight pallets or bins, with a 40 mm window to tweak the final resting position.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40 the Right Cylinder?
Size this 40 mm bore against its neighbours: a 32 mm bore gives 402 N push at 0.5 MPa for lighter duties, while a 50 mm bore offers 982 N if your rig needs more thrust. The 40 mm adjuster is ideal when you need to dial in the extend end position on-site or want a shared spare across similar stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because this is a non-magnet SKU, it cannot accept a sensor; select the -S version for CMSE/DMSE compatibility. For the 350 mm stroke, always support the load with external guides to prevent rod bending and side-load wear.
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 JSIJ40X350-40 FAQ
At 0.5 MPa it delivers 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 unit uses a G1/4 air port and features a 20.5 mm adjustable air cushion at each end.
The nominal 350 mm stroke is the maximum extend travel. An external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 310 to 350 mm. The retract end is fixed. This mechanism only 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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