Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 900mm 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
- Stroke900 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 JSIJ40X900-30S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore pneumatic actuator brings on-site adaptability to long-stroke automation. The external stop screw allows you to shorten the extend stroke by up to 30 mm, yielding a usable range of 870-900 mm for fine-tuning the end position without swapping the cylinder. This makes it ideal for sharing across slightly different machine setups. Built to JIS standards, its extruded hard-anodized aluminum profile barrel is noticeably shorter and more compact than a same-bore ISO 15552 unit.
The integrated -S piston magnet supports CMSE/DMSE reed or electronic switches that mount directly into the side grooves for precise position feedback. At 0.5 MPa it handles a safe working load of about 377 N, which equates to lifting roughly 32 kg vertically with a 2:1 safety margin. Air connects via a G1/4 port, and adjustable air cushions at both ends absorb kinetic energy. Note that the cushion only decelerates the piston; it does not hold the load on air loss, so fit an external rod lock or pilot-operated check valve for vertical safety.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 JSIJ40X900-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×900 | 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 JSIJ40X900-30S Is Used
Extended-Reach Diverting
Pushes packages across a wide transfer belt at 870-900 mm, using the external adjuster to sync the exact push-off distance with varying lane widths.
Vertical Material Lift
Raises components to an overhead fixture, relying on the 628 N extend force and a precise 30 mm stroke-shortening window to dial in the exact raise height.
Long-Stroke Pallet Stop
Acts as a 900 mm travel end-stop for flowing pallets, fine-tuning the halt position on-site without machining new hard stops.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-30S the Right Cylinder?
When sizing this 40 mm bore actuator, stepping down to a 32 mm bore yields 402 N of push at 0.5 MPa, while stepping up to a 50 mm bore provides 982 N. The -30 mm adjustable window is particularly useful for dialing in exact end-of-stroke positions on-site, allowing a single spare cylinder to cover minor stroke variations. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the 900 mm stroke creates a long lever arm, external guide rails are strongly recommended to prevent rod bending and premature seal wear from side 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 JSIJ40X900-30S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it delivers 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port size is G1/4.
The nominal 900 mm stroke is the maximum extend length. An external stop screw lets you shorten the extend stroke on-site by up to 30 mm, giving a usable range of 870-900 mm. The retract end remains fixed, and this mechanism sets the end position rather than locking the load.
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Covers non-human-caused product damage.
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