Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 300mm 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
- Stroke300 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 JSIJ50X300-20S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for tasks that need exact end-position tuning. The hard-anodized aluminum barrel omits tie rods, making the body shorter and more compact than a same-bore ISO 15552 unit. It handles a safe working load of about 589 N, which means you can lift roughly 50 kg vertically with a 2:1 safety margin.
The -20 code means an external adjuster can shorten the extend stroke by up to 20 mm on site, giving a usable range of 280 to 300 mm while the retract end stays fixed. Because this is an -S SKU, a built-in piston magnet works with CMSE or DMSE sensors in the side grooves for position feedback. Pneumatic connections use a G1/4 port, and adjustable air cushions of 20.5 mm decelerate the load at both ends.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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 JSIJ50X300-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSIJ50X300-20S Is Used
Transfer Push-Off
Pushes parts off a belt at 300 mm, using the 20 mm adjuster to dial in the exact drop point without moving the cylinder mounts.
Press Fit Stop
Lowers a 50 kg assembly and stops 10 mm short of the nominal bottom, letting operators set the precise seating depth on site.
Pallet Divert
Diverts pallets on a roller line where the full 300 mm stroke is too long, trimmed back via the external stop screw for shared spacing.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X300-20S the Right Cylinder?
When sizing this unit, the 50 mm bore sits between the 40 mm class (628 N push at 0.5 MPa) and the 63 mm class (1559 N push at 0.5 MPa), so verify your actual load requirements. The 20 mm adjustable window is ideal if you need to fine-tune the extend endpoint without swapping cylinders, or if you want a shared spare across slight stroke variants. You can mount it using basic, FA, LB, TC, TCM1, or TCM2 brackets. Because the stroke is 300 mm, add external guides to prevent rod bending and manage side loads. Remember that a plain cylinder drifts on air loss—the cushion only decelerates, so use an external rod lock or pilot-operated check valve for held 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 JSIJ50X300-20S FAQ
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa it pushes 1374 N and pulls 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. The air port size is G1/4.
The external stop screw lets you shorten the extend stroke by up to 20 mm on site. The usable extend range is 280 to 300 mm, with 300 mm being the maximum. The retract end is fixed, and the stop sets the end position rather than locking 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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