Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X30-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X30-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- 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 JSIJ50X30-20S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings compact power to tight machinery. The extruded hard-anodized aluminium barrel omits tie rods entirely, making the overall body shorter and more compact than a same-bore ISO 15552 unit. A built-in piston magnet comes standard, allowing CMSE or DMSE reed and electronic switches to drop directly into the side grooves for precise position detection.
The -20 code defines an external stop screw window that lets you shorten the extend stroke on-site by up to 20 mm, giving a usable extend range of 10 to 30 mm while the retract end remains fixed. You can fine-tune the end position without physically swapping the cylinder, which is ideal for shared spares across slightly different stroke variants. Operating through a G1/4 port, it handles about 589 N of safe working load, roughly enough to lift 50 kg vertically with a 2:1 margin. The adjustable air cushion decelerates the piston near the ends but does not lock the load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X30-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X30-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 30 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 JSIJ50X30-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×30 | 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 JSIJ50X30-20S Is Used
Short-Stroke Clamping
Dials in exact clamping depth on delicate workpieces by trimming the extend stroke from 30 mm down to 10 mm without changing the cylinder body.
Sensor-Verified Ejection
Uses the built-in magnet with DMSE switches to confirm part ejection in small-bore automated assemblies before the next cycle begins.
Compact Diverting Gate
Fits into tight conveyor frames where a shorter JIS profile body is required, adjusting the gate stroke on-site to match varying package sizes.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X30-20S the Right Cylinder?
When sizing this 50 mm bore, the neighbouring 40 mm option yields 628 N push at 0.5 MPa, whereas stepping up to a 63 mm bore provides 1559 N, giving you clear room to scale if your 982 N requirement shifts. The on-site extend-shortening window is highly useful when you need to dial in a precise end position after installation or want one shared spare to cover several stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The integrated -S magnet supports CMSE/DMSE sensors for exact tracking. Because the nominal stroke is only 30 mm, side-load guides are less critical here, but always guide the rod if you scale up to a stroke of 300 mm or more.
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 JSIJ50X30-20S FAQ
At 0.5 MPa this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa the push increases to 1374 N and the pull to 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. The air port size is G1/4.
The nominal extend stroke is 30 mm, which is the maximum travel. The external -20 stop screw window lets you shorten that extend stroke on-site by up to 20 mm, reducing the usable extend range down to 10 mm. The retract end is fixed, and this mechanism only sets the end position rather than locking the load.
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