Airtac JSI Series Standard Cylinder JSI32X125S
The AirTAC Airtac JSI Series Standard Cylinder JSI32X125S is a genuine double acting JIS-standard air cylinder with a Ø32mm bore and 125mm stroke, G1/8 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.
- BoreØ32 mm
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 20 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 JSI Series Standard Cylinder JSI32X125S
Generating 402 N of push force at 0.5 MPa, this double-acting 32 mm bore cylinder saves valuable machine space by being shorter and more compact than an equivalent ISO 15552 unit. The hard-anodized aluminum extruded barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life. Because the SKU includes the -S suffix, a built-in piston magnet is present, allowing CMSE or DMSE electronic switches to drop directly into the side sensor grooves for precise position detection.
For real-world sizing, plan for about 241 N of actual work at 0.5 MPa, which safely lifts roughly 20 kg vertically with a 2:1 margin. The unit features a G1/8 port, an M10x1.25 rod thread, and adjustable 20 mm air cushions at both ends to decelerate the piston smoothly. It operates between 0.15-1.0 MPa at speeds of 30-800 mm/s, making it highly versatile for compact pneumatic setups.
Airtac JSI Series Standard Cylinder JSI32X125S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI32X125S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 mm |
| Max standard stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSI Series Standard Cylinder JSI32X125S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 32 | 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 JSI Series Standard Cylinder JSI32X125S Is Used
Small Part Ejection
Ideal for pushing lightweight molded plastic components out of a press, utilizing the 241 N safe working load to reliably clear the mold cavity.
Electronic Assembly Clamping
Provides precise 20 kg vertical clamping force for securing delicate PCBs during automated soldering or connector insertion processes.
Package Diverting
Handles small carton diverting on narrow packaging lines where the compact 32 mm profile fits neatly between conveyor rollers.
Is the Airtac JSI Series Standard Cylinder JSI32X125S the Right Cylinder?
When sizing this 32 mm bore, stepping down is not an option as it is the smallest available JSI, but stepping up to the 40 mm bore raises the push force to 628 N at 0.5 MPa if your application demands more power. The 125 mm stroke is well within the 1000 mm standard maximum, requiring no special ordering. For any vertical or suspended load, remember that the air cushion only decelerates the piston near the stroke end and does not act as a brake; the rod will drift if air pressure is lost or the valve is centered, so an external rod lock or pilot-operated check valve is required to hold the load safely.
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 JSI Series Standard Cylinder JSI32X125S FAQ
The 32 mm bore generates a push force of 402 N and a pull force of 345 N at 0.5 MPa, increasing to 563 N push and 483 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa. It uses a G1/8 air port and features an M10x1.25 rod thread.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore, saving space on tight machines. It uses an extruded aluminum barrel without external rods and includes a built-in magnet (-S) for CMSE/DMSE sensors.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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