Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- 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 JSIJ40X300-30S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder features a hard-anodized aluminum barrel that is noticeably shorter than a same-bore ISO 15552 unit. A built-in magnet (-S) allows CMSE/DMSE sensors to drop directly into the side grooves for position detection. The G1/4 port feeds the double-acting single rod, delivering a practical safe working load of about 377 N, which equates to roughly 32 kg lifted vertically with a 2:1 margin.
The -30 code means an external adjuster can shorten the extend stroke on-site by up to 30 mm, giving a usable extend range of 270 to 300 mm while the retract end remains fixed. You can fine-tune the end position without physically swapping the cylinder. Note that a plain cylinder drifts on air loss; the adjustable air cushions only decelerate, so use an external rod lock for held loads.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 JSIJ40X300-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | 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 JSIJ40X300-30S Is Used
Adjustable Stop Positioning
Dial in the extend stroke from 270 to 300 mm on-site to set precise mechanical stops for varying part lengths without changing the actuator.
Transfer Line Diverter
Shorter JIS profile saves space along the belt while the 628 N push force reliably diverts packages at the required workstation.
Vertical Lift Gate
Lifts light gates or covers up to 32 kg vertically with a 2:1 safety margin, using the built-in magnet to confirm gate closure.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-30S the Right Cylinder?
When sizing, the neighboring 32 mm bore offers 402 N push at 0.5 MPa for lighter duties, while the 50 mm bore steps up to 982 N if this 40 mm unit is undersized. The adjustable stroke is perfect for sharing one spare across multiple stroke variants or dialing in exact end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix confirms the magnet is present for sensors. Because the 300 mm stroke carries a risk of rod bending, always support the load with an external guide to prevent side-loading.
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 JSIJ40X300-30S FAQ
This 40 mm bore cylinder uses a G1/4 port. It delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push and 739 N pull at 0.7 MPa, with a theoretical maximum of 128 kgf at 1.0 MPa.
The nominal 300 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 30 mm on-site, yielding a 270 to 300 mm usable range. The retract end is fixed, and the stop sets position rather than locking the load.
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