Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40S 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 JSIJ40X350-40S
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site extend-stroke flexibility to your tooling. An external adjuster lets you shorten the forward travel by up to 40 mm, giving a usable range of 310-350 mm without swapping the actuator. The retract end remains fixed. Built with an extruded hard-anodized aluminum barrel, the body is noticeably shorter and more compact than a same-bore ISO 15552 unit.
It handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin. The -S suffix means a built-in piston magnet is present, ready for CMSE or DMSE reed and electronic switches that drop directly into the side grooves. Pneumatic connections use a G1/4 port, while adjustable 20.5 mm air cushions at both ends manage end-of-stroke deceleration.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40S |
|---|---|
| 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 JSIJ40X350-40S
| 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 JSIJ40X350-40S Is Used
Variable Depth Boring
Dial in the exact extend stop from 310 to 350 mm on-site to machine blind holes of varying depths without reprogramming motion controls.
Adjustable Transfer Pusher
Fine-tune the pusher end position by up to 40 mm to accommodate different package sizes on a single sorting line.
Pallet Stopper Gate
Set the precise pallet stop height mechanically using the external adjuster, ensuring consistent alignment before strapping.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-40S the Right Cylinder?
Size this 40 mm bore against its neighbours: step down to a 32 mm bore for lighter loads (402 N push at 0.5 MPa), or move up to a 50 mm bore if you need 982 N. The adjustable stroke is ideal when you need to fine-tune the extended end position on the machine or want a single shared spare across slightly different stroke variants. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the stroke is 350 mm, always use an external guide to prevent rod bending and absorb side loads. Remember that the -S magnet enables position sensing, but the air cushion only decelerates; it will not hold a load on air loss, so fit an external rod lock or pilot-operated check valve for vertical holding.
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 JSIJ40X350-40S FAQ
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. The air port is G1/4.
The nominal maximum stroke is 350 mm. The external adjuster lets you shorten the extend stroke on-site by up to 40 mm, giving a usable extend range of 310-350 mm. The retract end is fixed, and the stop sets end position rather than locking 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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