Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X700-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X700-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X700-20S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder features a built-in magnet and an on-site extend-stroke adjuster. The external stop screw lets you trim the forward stroke by up to 20 mm, giving a usable range of 680-700 mm for fine-tuning the end position without swapping the actuator. Its hard-anodized aluminum extruded barrel is noticeably shorter and more compact than a same-bore ISO 15552 unit.
Equipped with a G1/4 port and a 20 mm piston rod, it handles a safe working load of about 589 N, which translates to lifting roughly 50 kg vertically with a 2:1 margin. The -S suffix means the piston carries a magnet for CMSE/DMSE sensors that mount directly into the side grooves. Note that a plain cylinder drifts on air loss; the adjustable cushion only decelerates near the ends, so fit an external rod lock for held loads.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X700-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X700-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 700 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 JSIJ50X700-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×700 | 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 JSIJ50X700-20S Is Used
Transfer Line Positioning
Fine-tune the 700 mm extend stop by up to 20 mm to perfectly strike a pusher plate without re-mounting the actuator.
Vertical Package Lift
Lifts around 50 kg vertically using the 982 N push force, with the built-in magnet confirming upper and lower positions.
Long-Reach Forming Stop
Uses the 680-700 mm stroke window to dial in the exact contact point on a long press bed, benefiting from the compact JIS body.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X700-20S the Right Cylinder?
This 50 mm bore sits between the 40 mm (628 N push) and 63 mm (1559 N push) sizes at 0.5 MPa, making it a solid mid-range choice. The 20 mm adjuster window is ideal for sharing a spare across slightly different stroke variants or finalizing end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 700 mm stroke is long, always use external guides to prevent rod bending and side loads. The -S model supports CMSE/DMSE switches for position sensing.
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 JSIJ50X700-20S FAQ
This 50 mm bore cylinder uses a G1/4 port and generates 982 N push and 825 N pull at 0.5 MPa. 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 nominal 700 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 20 mm on-site, yielding a usable range of 680-700 mm. The retract end is fixed, and this mechanism sets end position rather than locking the load.
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