Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-10S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-10S 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 JSIJ40X125-10S
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings on-site extend adjustability to mid-range pneumatic setups. The external stop screw lets you trim the forward travel by up to 10 mm, yielding a usable 115-125 mm extend stroke without changing the cylinder itself. It is a no-tie-rod extruded hard-anodized aluminium build, noticeably shorter and more compact than a same-bore ISO 15552 unit. The G1/4 port and M14x1.5 rod thread keep connections standard.
With a safe working load around 377 N, it handles roughly 32 kg lifted vertically with a 2:1 margin. The -S suffix means a built-in magnet for CMSE/DMSE sensors in the side grooves. Remember that air cushions only decelerate; use an external rod lock or pilot-operated check valve to hold a load securely on air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-10S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-10S |
|---|---|
| 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 JSIJ40X125-10S
| 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 JSIJ40X125-10S Is Used
Clamp Position Trimming
Dial in the exact clamping depth on machining fixtures by trimming the 125 mm extend stroke down 10 mm on-site without swapping cylinders.
Transfer Stopper Tuning
Adjust the stopper block position precisely on packaging lines to handle slight product size variations using the external adjuster.
Vertical Lift Diverter
Lift and divert roughly 32 kg loads vertically using the 528 N pull force, tweaking the extend end-point to match chute clearances.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X125-10S the Right Cylinder?
Size this 40 mm bore against its neighbours: step down to a 32 mm bore for lighter 402 N tasks, or up to a 50 mm bore when you need 982 N at 0.5 MPa. The 10 mm extend-shortening window is ideal for fine-tuning end positions on-site or sharing a spare across slight stroke variants. JSIJ mounting choices include FA, LB, TC, TCM1, and TCM2. The -S magnet supports CMSE/DMSE switches. For any stroke over 300 mm, always use a guide rail to prevent side-load wear on the 16 mm rod.
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 JSIJ40X125-10S FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa it pushes 879 N and pulls 739 N. The theoretical maximum force is 128 kgf at 1.0 MPa. It operates on a G1/4 port.
The nominal 125 mm extend stroke is the maximum. An external stop screw lets you shorten the forward travel by up to 10 mm on-site, giving a usable extend range of 115-125 mm. The retract end remains fixed.
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Standard models are processed and dispatched in 3-5 business days.
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