Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-10
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-10 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 JSIJ40X250-10
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site flexibility to your stroke length. The external adjuster lets you shorten the extend stroke by up to 10 mm, meaning you can fine-tune the 250 mm nominal end position without swapping the cylinder. It handles about 377 N of real work safely, which translates to lifting roughly 32 kg vertically with a 2:1 margin.
Built with an extruded hard-anodized aluminum barrel, the body is noticeably shorter and more compact than an ISO 15552 cylinder of the same bore. The G1/4 port feeds a double-acting single-rod mechanism with 20.5 mm adjustable air cushions at both ends. Note that this specific SKU lacks a magnet, so it cannot take a CMSE or DMSE sensor; order the -S variant if you need position detection.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-10 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 JSIJ40X250-10
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSIJ40X250-10 Is Used
End-Stop Trimming
Dial in the exact 240 to 250 mm extend reach on a machining fixture using the external adjuster to compensate for tooling wear.
Transfer Pusher
Pushes parts onto a belt with 628 N of force, using the 10 mm window to tweak the ejection distance for different product sizes.
Compact Divert
Fits into tight sorting lanes thanks to the short JIS profile barrel, diverting lightweight cartons without exceeding the 32 kg vertical lift limit.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X250-10 the Right Cylinder?
When sizing this model, the 32 mm bore offers a lighter 402 N push at 0.5 MPa, while the 50 mm bore jumps to 982 N if you need more authority. The 10 mm adjustable window is ideal for sharing one spare across several stroke variants or dialing in a final end position on the machine. You can mount it via basic, FA, LB, TC, TCM1, or TCM2 brackets. Because the stroke is 250 mm, ensure you guide the load to prevent side-load wear on the rod. Finally, remember this plain cylinder will not hold a load on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve if you need true load 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 JSIJ40X250-10 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 250 mm nominal stroke is the maximum. The external stop screw lets you shorten the extend stroke by up to 10 mm on-site, giving a usable extend range of 240 to 250 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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