Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 900mm 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
- Stroke900 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 JSIJ40X900-40
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for applications needing on-site end-position tuning. The external adjuster allows you to shorten the extend stroke by up to 40 mm on site, giving a usable range of 860 to 900 mm while the retract end remains fixed. The nominal 900 mm stroke represents the maximum travel. This design is perfect for fine-tuning a shared spare across stroke variants without swapping the whole actuator. It features a G1/4 port and an extruded hard-anodized aluminium barrel that makes it shorter and more compact than an equivalent ISO 15552 cylinder.
In practical terms, this actuator handles about 377 N of safe working load, which is roughly 32 kg lifted vertically with a 2:1 margin. The adjustable air cushion spans 20.5 mm at each end to decelerate the piston smoothly. Because this specific SKU lacks the -S magnet option, it cannot take a CMSE or DMSE sensor. Note that a plain cylinder does not hold load on air loss; the cushion only decelerates, so fit an external rod lock or pilot-operated check valve if you need to suspend a load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 JSIJ40X900-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×900 | 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 JSIJ40X900-40 Is Used
Conveyor Transfer Stop
Dial in the exact 860 to 900 mm extend position to act as a physical stop gate on a packaging line, fine-tuning the buffer gap on site without changing the cylinder.
Long-Reach Pusher
Pushes pallets or totes over a 900 mm span, using the 40 mm adjuster to compensate for mounting variances and ensure the load seats perfectly against the back wall.
Elevator Stroke Limit
Lifts a 32 kg payload vertically, using the external adjuster to set a precise upper travel limit of 860 mm while retaining the full 900 mm stroke as a maximum fallback.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-40 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 steps up to 982 N if your payload exceeds the 40 mm capacity. The JSIJ mounting set includes Basic, FA, LB, TC, TCM1, and TCM2 options. The -40 mm adjuster window is highly useful when you need to dial in a precise end position after installation or want one shared spare to cover slight stroke variations. Because the 900 mm stroke is quite long, you must support the load with an external guide to prevent rod bending and side-load damage. For position feedback, you would need the -S magnet variant, as this SKU cannot accept a sensor.
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 JSIJ40X900-40 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 model uses a G1/4 air port and features a 16 mm rod with an M14x1.5 thread.
The external adjuster lets you shorten the extend stroke on site by up to 40 mm. The usable extend travel is 860 to 900 mm, with the nominal 900 mm being the maximum. The retract end is fixed. This mechanism only sets the end position and does not lock 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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