Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X30-20
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X30-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 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 JSIJ40X30-20
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder keeps your footprint tight. It is noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel uses no tie rods, and the G1/4 port connects cleanly to your pneumatic supply.
The external adjuster lets you trim the extend stroke on site by up to 20 mm. With a nominal 30 mm stroke, you can dial the usable extend down to 10 mm without swapping the cylinder. This on-site tuning handles about 377 N of real work safely, which means a vertical lift of roughly 32 kg with a 2:1 margin. Note this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X30-20 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X30-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 JSIJ40X30-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×30 | 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 JSIJ40X30-20 Is Used
Probe Positioning
Dial in the extend stroke from 10 to 30 mm to set the exact touch distance for a testing probe without machining custom spacers.
Short Clamping
Clamp delicate electronic parts securely using the 528 N pull force at 0.5 MPa, adjusting the extend reach on site to avoid crushing.
Gate Diverter
Actuate a short flow gate on a packaging line, tuning the 30 mm extend stop precisely to the product width during commissioning.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X30-20 the Right Cylinder?
If you need less force, the 32 mm bore offers 402 N push at 0.5 MPa; stepping up to the 50 mm bore yields 982 N. This 40 mm bore gives 628 N push and 528 N pull at 0.5 MPa. The adjustable stroke is perfect when you need to fine-tune an end position across multiple stations or keep one spare for various short-stroke needs. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because this SKU has no -S suffix, it cannot accept a magnetic switch. For any stroke at or above 300 mm, always use a guide rail to prevent 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 JSIJ40X30-20 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. This 40 mm bore unit uses a G1/4 air port and features a 16 mm rod with an M14x1.5 thread.
The nominal stroke is 30 mm, which is the maximum extend length. The external adjuster lets you shorten the extend stroke on site by up to 20 mm, giving a usable extend range of 10 to 30 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load; for load holding on air loss you need an external rod lock or pilot-operated check valve.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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