Airtac JSI Series Standard Cylinder JSI40X165S
The AirTAC Airtac JSI Series Standard Cylinder JSI40X165S is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/4
- Acting typeDouble acting
- 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 JSI Series Standard Cylinder JSI40X165S
Delivering 628 N of push force at 0.5 MPa, the AirTAC JSI40X165S is a JIS-standard double-acting profile cylinder built for tight machinery layouts. Its extruded hard-anodized aluminum barrel omits external rods entirely, making the unit significantly shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore.
Because this SKU includes the -S magnet, CMSE or DMSE sensors drop directly into the side grooves for precise position detection. A heterogeneous two-way piston seal retains grease for low-friction life, and with a 0.5 MPa supply you can plan for roughly 377 N of safe working load or lifting about 32 kg vertically with a 2:1 margin. The unit features a G1/4 port and a 16 mm rod.
Airtac JSI Series Standard Cylinder JSI40X165S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X165S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 165 mm |
| Acting type | Double acting |
| 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 JSI Series Standard Cylinder JSI40X165S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×165 | 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 JSI40X165S Is Used
Package Diverting
Pushes lightweight cardboard cartons at 30-800 mm/s onto secondary packaging lines using the 628 N push force.
Small Part Ejection
Ejects molded plastic components from a 40 mm bore fixture, relying on the -S magnet and DMSE sensors to confirm ejection.
Clamping Jaws
Secures aluminum brackets during a machining step, applying 528 N of pull force at 0.5 MPa to hold the workpiece.
Is the Airtac JSI Series Standard Cylinder JSI40X165S the Right Cylinder?
If you need less force, the smaller JSI32 bore offers 402 N push at 0.5 MPa; if your application requires more power, stepping up to the JSI50 provides 982 N. This 165 mm stroke falls well within standard limits, keeping the assembly straightforward. For mounting, you can use LB foot brackets, FA/FB flanges, CA/CB clevises, or TC trunnions. Remember that the adjustable air cushion only decelerates the piston near the end of stroke; if air pressure drops, the rod will drift, so fit an external rod lock or pilot-operated check valve for suspended loads.
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 JSI40X165S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it delivers 879 N push and 739 N pull. The theoretical maximum is 128 kgf at 1.0 MPa, and the air port size is G1/4.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore, saving machine space. The -S suffix means it has a built-in magnet for CMSE/DMSE switches.
Authorized Export Seller
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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