Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-75S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 125mm 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
- Stroke125 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 JSIJ40X125-75S
Delivering 628 N of push force at 0.5 MPa, this AirTAC adjustable-stroke actuator brings on-site flexibility to compact JIS builds. The hard-anodized aluminum profile barrel makes it shorter than a same-bore ISO 15552 cylinder, while the G1/4 port keeps air supply tidy.
The external -75 mm adjuster lets you trim the usable extend stroke down from the 125 mm maximum to a 50 mm minimum without swapping the cylinder. Factoring in a 60 percent safety margin, it handles about 377 N of real work, which translates to lifting roughly 32 kg vertically. The integrated -S magnet accepts CMSE/DMSE sensors in the side grooves for precise position detection.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-75S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 JSIJ40X125-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ40X125-75S Is Used
Variable Length Gauging
Dial in the exact 50 to 125 mm extend position on-site to push parts into a variable-depth gauging fixture without reprogramming the machine.
Transfer Line Diverter
Shorten the extend stroke by up to 75 mm to accommodate different package sizes on a single conveyor diverter, using the G1/4 port for fast response.
Adjustable Stop Gate
Set the external stop screw to create a precise physical end-stop for pallets, relying on the 528 N pull force at 0.5 MPa to retract the gate reliably.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-75S the Right Cylinder?
When sizing, the 32 mm bore offers 402 N push at 0.5 MPa for lighter duties, whereas the 50 mm bore steps up to 982 N if this 40 mm bore lacks thrust. The -75 mm adjustable window is ideal for fine-tuning end positions on-site or sharing a single spare across multiple stroke variants. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. The -S magnet supports CMSE/DMSE switches. For any stroke at or above 300 mm, always use a guide rail to prevent side-load damage.
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 JSIJ40X125-75S FAQ
This 40 mm bore cylinder pushes 628 N and pulls 528 N at 0.5 MPa, pushes 879 N and pulls 739 N at 0.7 MPa, and reaches a theoretical maximum of 128 kgf at 1.0 MPa. It uses a G1/4 air port and features a 16 mm rod with an M14x1.5 thread.
The nominal 125 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 50 to 125 mm while the retract end remains fixed. This mechanism sets the end position and does not lock the load; use an external rod lock or pilot-operated check valve to hold a load against air loss.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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