Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-75S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 JSIJ40X75-75S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site extend tuning to compact automation setups. Its extruded hard-anodized aluminium barrel is noticeably shorter than a same-bore ISO 15552 unit, saving valuable machine space. The G1/4 port feeds the double-acting single-rod system, while the integrated magnet (-S) supports CMSE/DMSE sensors for precise end-position detection.
The external stop screw provides a 75 mm adjustable window, letting you shorten the extend stroke from its 75 mm maximum down to zero without swapping the cylinder. This mechanism sets the end position but does not lock the load; on air loss the piston drifts, as the adjustable 20.5 mm air cushions only decelerate motion. For secured holding you need an external rod lock or pilot-operated check valve. In practice it handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-75S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 JSIJ40X75-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×75 | 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 JSIJ40X75-75S Is Used
Clamp Stroke Tuning
Dial in the exact clamping reach on machining fixtures by adjusting the extend end position on-site without swapping hardware.
Variable Stop Pushing
Push parts of varying widths down a conveyor by tweaking the 75 mm extend window to match each product size.
Compact Part Ejection
Fit a short-stroke ejection mechanism into a tight machine bay using the space-saving JIS profile barrel and magnetic sensing.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X75-75S the Right Cylinder?
When sizing this unit, stepping down to a 32 mm bore drops the 0.5 MPa push force to 402 N, while moving up to a 50 mm bore increases it to 982 N. The 75 mm adjustable window is ideal for sharing a single spare cylinder across multiple stroke variants or fine-tuning the end position during machine commissioning. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. The -S suffix means a magnet is already built in for CMSE/DMSE switches. Because the stroke is under 300 mm, side-load risks are minimal, but always guide the load for smooth operation.
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 JSIJ40X75-75S FAQ
This 40 mm bore cylinder uses a G1/4 port and generates 628 N push and 528 N pull at 0.5 MPa. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa.
The 75 mm code indicates the maximum amount you can shorten the extend stroke on-site using an external stop screw. The nominal 75 mm stroke is the maximum, and you can reduce it down to zero, while the retract end remains fixed.
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Standard models are processed and dispatched in 3-5 business days.
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