Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X900-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X900-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke900 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X900-40S
Generating 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for long-reach actuation where the exact extend end-position needs on-site tuning. The hard-anodized aluminum barrel omits tie rods entirely, making the overall body shorter and more compact than a same-bore ISO 15552 unit. An external adjuster allows you to shorten the 900 mm extend stroke by up to 40 mm on site, yielding a usable range of 860-900 mm without swapping the cylinder, while the retract end remains fixed. In practical terms it handles about 589 N of real work, which is roughly 50 kg lifted vertically with a 2:1 safety margin.
This -S variant includes a built-in piston magnet for CMSE/DMSE switches that drop directly into the side sensor grooves. Air connections use a G1/4 port, and adjustable air cushions of 20.5 mm at each end absorb kinetic energy near stroke extremes. Note that the cushion only decelerates the load; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X900-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X900-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 900 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 JSIJ50X900-40S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | 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 JSIJ50X900-40S Is Used
Transfer Line Diverting
Pushes products across a long 900 mm conveyor belt lane, using the 40 mm adjuster to dial in the exact pusher end-stop without repositioning the cylinder mount.
High-Bay Carton Pushing
Moves cartons down a packaging lane, relying on the compact JIS profile to save machine space while the 50 kg vertical lift capacity handles the transfer weight.
Long-Stroke Lowering Arm
Lowers a guided assembly over an 860 to 900 mm range, using the adjustable stop to set precise resting heights for different product formats on the same line.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X900-40S the Right Cylinder?
When sizing, the neighboring 40 mm bore yields 628 N push at 0.5 MPa, while the 63 mm bore steps up to 1559 N, so the 50 mm bore sits squarely in the mid-range at 982 N. The -40 mm adjustable window is highly useful when you want a single shared spare across slightly different stroke variants, or need to fine-tune the extend end position after mechanical mounting. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because the 900 mm stroke is quite long, you must support the load with external guides to prevent rod bending and excessive side loading. The -S magnet enables precise position sensing with CMSE/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 JSIJ50X900-40S FAQ
At 0.5 MPa it provides 982 N push and 825 N pull. At 0.7 MPa it provides 1374 N push and 1154 N pull. The theoretical maximum force is 200 kgf at 1.0 MPa. The air port size is G1/4.
The nominal 900 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 40 mm on site, giving a usable extend range of 860-900 mm. The retract end is fixed, and the stop sets end position rather than locking the load.
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