Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-50S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 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 JSIJ40X400-50S
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site adjustability to long-stroke automation. The external stop screw lets you trim the extend stroke by up to 50 mm, giving a usable forward range of 350-400 mm while the retract end remains fixed. You can fine-tune the end position without physically swapping the actuator, which is ideal for sharing a spare across stroke variants. Built with a hard-anodized aluminum barrel, the body is noticeably shorter and more compact than a same-bore ISO 15552 unit.
The integrated -S piston magnet supports CMSE/DMSE reed or electronic switches that drop directly into the side grooves. In practical terms, it handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin. Pneumatic connections use a G1/4 port. Remember that a standard cylinder does not hold load on air loss—the adjustable cushion only decelerates near the ends, so fit an external rod lock or pilot-operated check valve if you need true load holding.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-50S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 JSIJ40X400-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×400 | 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 JSIJ40X400-50S Is Used
Conveyor Diverter Tuning
Dial in the exact pusher extension up to 50 mm short of the 400 mm maximum to accommodate varying package sizes on a sorting line without changing the cylinder.
Pallet Stop Adjustment
Fine-tune the stopping position of pallets on a roller bed by adjusting the extend stroke on-site, ensuring precise alignment for downstream wrapping.
Press Feed Positioning
Set the precise material feed depth by shortening the forward stroke, allowing quick changeovers between different blank sizes on a compact JIS assembly press.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-50S the Right Cylinder?
When sizing this actuator, compare it against neighbouring bores: a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore provides 982 N, so the 40 mm sits comfortably in the mid-range. The -50 mm adjustable window is highly useful for dialing in exact end positions on-site or keeping one spare part for multiple stroke lengths. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the stroke is 400 mm, you must support the load with external guides to prevent rod bending and excessive side loading. The -S suffix ensures you have the magnet ready for CMSE/DMSE sensors.
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 JSIJ40X400-50S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it delivers 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. It features a 16 mm rod, M14x1.5 rod thread, and a G1/4 port.
The nominal stroke is 400 mm, which is the maximum extend length. The external adjuster allows you to shorten the extend stroke by up to 50 mm on-site, giving a usable range of 350-400 mm. The retract end is fixed, and this mechanism only sets the end position—it does not lock the load.
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