Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40S 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 JSIJ40X400-40S
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder features an external adjuster that lets you shorten the extend stroke on-site by up to 40 mm. The nominal 400 mm stroke remains the maximum travel, giving you a usable extend window of 360 to 400 mm for fine-tuning the end position without swapping the actuator. Built with an extruded hard-anodized aluminum barrel, it is noticeably shorter and more compact than a same-bore ISO 15552 cylinder. The G1/4 port feeds the double-acting single-rod system, and the -S suffix means a built-in magnet is ready for CMSE/DMSE sensors in 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 safety margin. Adjustable air cushions of 20.5 mm at each end absorb kinetic energy near the stroke limits. Remember that the cushion only decelerates the piston; a plain cylinder cannot hold a load on air loss, so fit an external rod lock or pilot-operated check valve if you need strict positioning.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40S |
|---|---|
| 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 JSIJ40X400-40S
| 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 JSIJ40X400-40S Is Used
Sorter Diverter Tuning
Dial in the exact 360 to 400 mm extend reach to push mixed-size cartons onto the correct lane without re-mounting the actuator.
Fill Head Positioning
Adjust the extend stop on-site to set the precise fill depth for varying container heights on a single packaging line.
Shelf Height Calibration
Fine-tune the extend endpoint to interface with slightly misaligned shelf heights in automated storage and retrieval systems.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-40S the Right Cylinder?
When sizing this actuator, compare the 40 mm bore against its neighbors: a 32 mm bore yields 402 N push at 0.5 MPa for lighter duties, while a 50 mm bore steps up to 982 N for heavier cycles. The adjustable stroke is ideal when you need to dial in a precise end position on the machine or want a single spare part to cover slight stroke variations across similar stations. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. Because the -S option includes a piston magnet, you can drop CMSE or DMSE reed and electronic switches directly into the barrel grooves. At a 400 mm stroke, always support the load with an external guide to prevent rod bending and premature seal wear from side loads.
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 JSIJ40X400-40S 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 cylinder uses a G1/4 air port and a 16 mm rod with an M14x1.5 thread.
The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, giving a usable extend range of 360 to 400 mm. The nominal 400 mm stroke is the maximum travel, and the retract end remains fixed. This mechanism sets the end position and does not lock the load.
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