Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke400 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40S
Generating 982 N of push force at 0.5 MPa, this 50 mm bore AirTAC model brings precise on-site adjustability to long-stroke tasks. The extruded hard-anodized aluminium profile barrel keeps the total length shorter than a same-bore ISO 15552 unit, saving valuable machine space. A G1/4 port supplies air, while adjustable cushions at both ends manage end-of-stroke impact.
The -40 code means an external stop screw lets you shorten the extend stroke by up to 40 mm on-site, giving a usable range of 360-400 mm without swapping the cylinder. The built-in magnet (-S) supports CMSE/DMSE sensors in the side grooves for position feedback. Based on the 982 N push figure, this bore handles about 589 N of real work, roughly 50 kg lifted vertically with a 2:1 margin. Remember that the stop screw sets the end position but does not lock the load; you need an external rod lock or pilot-operated check valve to hold a load against air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 JSIJ50X400-40S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | 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 JSIJ50X400-40S Is Used
Sorter Diverter Tuning
Dial in the exact 360-400 mm extend reach to deflect varying package sizes on a packaging line without remounting the actuator.
Press Pin Insertion
Set the precise lower end-stop for pressing pins, using the 50 kg vertical lift capacity while relying on a guide rail for stability.
Pallet Stop Adjustment
Adjust the extend stroke on-site to accommodate different pallet depths, using the G1/4 port and compact JIS profile to fit tight frames.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-40S the Right Cylinder?
When sizing, the 50 mm bore sits neatly between the 40 mm (628 N push at 0.5 MPa) and the 63 mm (1559 N push). Choose this adjustable version when you need to fine-tune the extend end-position on-site or want a shared spare across slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix ensures you have the magnet for CMSE/DMSE switches. Because the 400 mm stroke is long, always use an external guide rail to prevent rod bending and excessive 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 JSIJ50X400-40S FAQ
This 50 mm bore cylinder has a G1/4 port. It delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push and 1154 N pull at 0.7 MPa, with a theoretical maximum of 200 kgf at 1.0 MPa.
The nominal 400 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, yielding a usable range of 360-400 mm. The retract end remains fixed, and this mechanism only sets the end position; it does not lock the load.
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