Airtac JSI Series Standard Cylinder JSI32X490S
The AirTAC Airtac JSI Series Standard Cylinder JSI32X490S is a genuine double acting JIS-standard air cylinder with a Ø32mm bore and 490mm 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
- Stroke490 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 JSI32X490S
Generating 402 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than an ISO 15552 cylinder of the same 32 mm bore. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life. Equipped with a G1/8 port and an M10x1.25 rod thread, it moves at 30-800 mm/s.
Because the -S suffix provides a built-in piston magnet, you can drop CMSE or DMSE reed and electronic switches directly into the side grooves for position sensing. Plan for roughly 241 N of real work at 0.5 MPa, which translates to lifting about 20 kg vertically with a 2:1 safety margin. The adjustable 20 mm air cushions at both ends decelerate the piston smoothly near the stroke limits.
Airtac JSI Series Standard Cylinder JSI32X490S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI32X490S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 490 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 JSI32X490S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 32 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×490 | 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 JSI32X490S Is Used
Small Part Ejection
Pushes lightweight plastic mouldings out of a 490 mm deep machining enclosure using 402 N of force at 0.5 MPa.
Diverting Arm Actuation
Extends a sorting flap across a narrow conveyor belt, relying on the compact JIS profile to fit within tight frame clearances.
Lightweight Tray Indexing
Shifts empty packaging trays along a roller table, lifting roughly 20 kg vertically with a 2:1 safety margin.
Is the Airtac JSI Series Standard Cylinder JSI32X490S the Right Cylinder?
When sizing this 490 mm stroke model, verify your actual load against the 402 N push and 345 N pull ratings at 0.5 MPa. As the smallest bore in the JSI series, there is no smaller option; if you need more power, stepping up to the 40 mm bore increases push force to 628 N at 0.5 MPa. Since this unit features the -S magnet, it is fully ready for CMSE or DMSE sensors. For mounting flexibility, you can use LB foot, FA/FB flange, CA/CB/CR clevis, TC/TCM1/TCM2 trunnion, or an I/Y/F/U rod knuckle.
At a 490 mm stroke, the 12 mm rod is susceptible to bending under lateral stress, so external guides are strongly recommended to prevent side-loading and premature seal failure. Remember that a standard cylinder does not hold its load if air pressure drops or the valve is centered, as the piston will drift; the end cushions only decelerate motion and do not act as a brake. To suspend a load safely, fit an external rod lock or a pilot-operated check valve.
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 JSI32X490S FAQ
This 32 mm bore cylinder features a G1/8 port and an M10x1.25 rod thread. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push and 483 N pull at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa.
Yes, the -S suffix means it has a built-in magnet for CMSE or DMSE switches that mount in the side grooves. It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore, saving space without losing functionality.
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Standard models are processed and dispatched in 3-5 business days.
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