Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-30S 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 JSIJ40X350-30S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site extend adjustment to long-stroke tasks. The hard-anodized aluminum barrel omits external rods, making the overall body shorter and more compact than a same-bore ISO 15552 unit. A G1/4 port supplies air, while the integrated -S magnet allows CMSE/DMSE sensors to drop directly into the side grooves for position detection.
The external -30 adjuster lets you shorten the extend stroke from the 350 mm maximum down to 320 mm without changing the cylinder itself, perfect for dialing in the exact end position on the machine. It handles about 377 N of safe working load, which is roughly 32 kg lifted vertically with a 2:1 margin. The retract end remains fixed, and the adjustable air cushions absorb kinetic energy at stroke ends without locking the load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-30S |
|---|---|
| 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 JSIJ40X350-30S
| 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 JSIJ40X350-30S Is Used
Transfer Push-off
Dial in the exact push-off distance on a conveyor line using the 30 mm extend adjuster to handle varying package widths without swapping cylinders.
Clamp Positioning
Fine-tune the clamping reach on a machining fixture by shortening the 350 mm stroke up to 30 mm on-site to avoid crushing delicate parts.
Divert Gate Actuation
Adjust the divert gate extension endpoint on the fly to accommodate different pallet sizes while relying on the compact JIS profile to save space.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-30S the Right Cylinder?
Size this 40 mm bore against the 32 mm option (402 N push at 0.5 MPa) if you need less force, or step up to the 50 mm bore (982 N push at 0.5 MPa) for heavier cycles. The adjustable stroke is invaluable when you want a shared spare across stroke variants or need to fine-tune the extend end position on-site. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because the -S suffix means a magnet is built in, you can fit CMSE/DMSE switches directly. At 350 mm of stroke, always support the load with an external guide 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 JSIJ40X350-30S 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 cylinder features a G1/4 port and a 16 mm piston rod.
The external adjuster lets you shorten the extend stroke on-site by up to 30 mm, meaning the usable extend range is 320-350 mm (the 350 mm nominal stroke is the maximum). The retract end is fixed. This mechanism only sets the end position and does not hold the load; use an external rod lock or pilot-operated check valve if you need to prevent drift on air loss.
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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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