Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-40 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 JSIJ40X300-40
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings an external adjuster that lets you shorten the extend stroke on-site by up to 40 mm. The nominal 300 mm stroke remains the maximum, giving you a usable extend range of 260 to 300 mm, while the retract end stays fixed. Because the barrel is an extruded hard-anodized aluminum profile, the overall build is noticeably shorter and more compact than an ISO 15552 cylinder of the same bore.
This unit handles about 377 N of safe working load, which means it can lift roughly 32 kg vertically with a 2:1 margin. Air connects via a G1/4 port, and adjustable air cushions of 20.5 mm at each end absorb kinetic energy. Note that this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors without switching to the -S variant. The cushion only decelerates the piston near the end of travel; it will not hold a load on air loss, so use an external rod lock or pilot-operated check valve for suspended loads.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-40 |
|---|---|
| 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 JSIJ40X300-40
| 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 JSIJ40X300-40 Is Used
Variable Push-Off Distance
Dial in the exact ejector pin extension between 260 and 300 mm on-site, ensuring parts clear the mold without re-mounting the actuator.
Adjustable Transfer Stop
Use the 40 mm extend window to alter the stopper position for different product lengths on a packaging line, accommodating varied box sizes quickly.
Soft-Contact Pressing
Shorten the extend stroke to set a precise lower pressing position for delicate assemblies, relying on the 20.5 mm cushion to decelerate the motion.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X300-40 the Right Cylinder?
When sizing this 40 mm bore, stepping down to a 32 mm bore drops the 0.5 MPa push force to 402 N, while stepping up to a 50 mm bore raises it to 982 N. The -40 mm adjustable window is highly useful when you need to fine-tune an end position without physically swapping the cylinder, or when you want a single spare part that can cover several slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke is 300 mm, you should guide the load externally to prevent rod bending and side-load damage. As this SKU has no -S suffix, it cannot support magnetic 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 JSIJ40X300-40 FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. It uses a G1/4 port and a 16 mm rod.
The external stop screw lets you shorten the extend stroke by up to 40 mm on-site. The nominal 300 mm stroke is the maximum, so the usable extend range is 260 to 300 mm. The retract end is fixed, and this stop mechanism is not a load lock.
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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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