Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X225-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X225-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 225mm 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
- Stroke225 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 JSIJ40X225-20S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site flexibility to mid-range automation. The extruded hard-anodized aluminium barrel contains no external rods, making the overall body shorter and more compact than a same-bore ISO 15552 unit. A built-in piston magnet (-S) allows CMSE or DMSE switches to drop directly into the side sensor grooves.
The external adjuster lets you shorten the extend stroke by up to 20 mm on site, giving a usable forward range of 205-225 mm while the retract end stays fixed. This means you can fine-tune the end position without physically swapping the cylinder, and it safely handles a working load of about 377 N, or roughly 32 kg lifted vertically with a 2:1 margin. Pneumatic connections use a G1/4 port, and adjustable air cushions of 20.5 mm decelerate the load at each end.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X225-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X225-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 JSIJ40X225-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×225 | 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 JSIJ40X225-20S Is Used
Clamp Stroke Trimming
Dial down the extend stroke from 225 mm by 20 mm to prevent a clamping jaw from over-traveling and crushing delicate aluminum housings on a machining line.
Transfer Gate Adjustment
Fine-tune the actuator end position on site to perfectly meet a shifting conveyor belt height without disassembling the pneumatic block or changing hardware.
Carton Pusher Stroke
Shorten the forward stroke by 20 mm on a packaging diverter to accommodate a newly sized carton format, keeping the motion cycle fast and accurate.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X225-20S the Right Cylinder?
When sizing this unit, the 32 mm bore offers a lighter 402 N push at 0.5 MPa, while the 50 mm bore steps up to 982 N if your payload exceeds the 40 mm class. The adjustable -20 mm window is ideal for dialing in exact end positions during machine commissioning or sharing a single spare cylinder across several stroke variants. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this 225 mm stroke exceeds 300 mm when combined with side loads, always guide the rod end to prevent lateral binding. The -S suffix confirms the magnet is present for position sensing.
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 JSIJ40X225-20S FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa the push is 879 N and pull is 739 N, with a theoretical max of 128 kgf at 1.0 MPa. It features a 16 mm rod, a G1/4 port, an M14x1.5 rod thread, and 20.5 mm adjustable cushions at both ends.
An external stop screw lets you shorten the extend stroke by up to 20 mm on site, yielding a usable forward range of 205-225 mm. The nominal 225 mm stroke remains the maximum, and the retract end is fixed. Note that this mechanism sets the end position and does not hold the load on air loss; use an external rod lock or pilot-operated check valve for load holding.
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Standard models are processed and dispatched in 3-5 business days.
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