Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 275mm 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
- Stroke275 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 JSIJ40X275-40
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 extruded hard-anodized aluminium barrel removes external rods, making the body noticeably shorter and more compact than a same-bore ISO 15552 unit. A G1/4 port feeds the double-acting single rod, while adjustable air cushions of 20.5 mm decelerate the piston smoothly at each end.
The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, giving a usable range of 235 to 275 mm without changing the cylinder. This makes it ideal for fine-tuning end positions and standardizing spares across similar machines. In practice it handles about 377 N of real work, roughly 32 kg lifted vertically with a 2:1 margin. Note that this SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 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 JSIJ40X275-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×275 | 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 JSIJ40X275-40 Is Used
Conveyor Diverter Tuning
Fine-tune the 275 mm extend stop on-site by up to 40 mm to perfectly align a diverter gate without machining new mounts.
Carton Flap Folding
Adjust the extend end position dynamically to fold varying carton sizes on a shared line using the 235 to 275 mm range.
Compact Pusher Station
Leverage the shorter JIS profile barrel to fit a 40 mm bore pusher into tight conveyor frames where ISO 15552 units will not fit.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-40 the Right Cylinder?
When sizing this 40 mm bore model, step down to a 32 mm bore for lighter loads pushing 402 N at 0.5 MPa, or step up to a 50 mm bore if you need 982 N of push force. The 40 mm adjuster window is especially useful when you need to share a single spare cylinder across machines that need slightly different extend end positions. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke is 275 mm, always guide the load to prevent side-load bending on the 16 mm rod. This non-magnet version cannot host position sensors; choose the -S variant for CMSE or DMSE switches.
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 JSIJ40X275-40 FAQ
This 40 mm bore cylinder has a G1/4 port. It pushes 628 N and pulls 528 N at 0.5 MPa. At 0.7 MPa it pushes 879 N and pulls 739 N. The theoretical maximum force is 128 kgf at 1.0 MPa.
The nominal 275 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 40 mm on-site, yielding a usable extend range of 235 to 275 mm. The retract end is fixed. This stop sets the end position and is not a load lock; use an external rod lock or pilot-operated check valve to hold a load.
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