Airtac JSI Series Standard Cylinder JSI40X800S
The AirTAC Airtac JSI Series Standard Cylinder JSI40X800S is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 800mm 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
- Stroke800 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 JSI40X800S
Delivering 628 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable real estate by being shorter than an ISO 15552 unit of the same 40 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 across its 800 mm travel.
Because this SKU includes the -S magnet, you can drop CMSE or DMSE reed and electronic switches directly into the side grooves for position sensing. For practical sizing, plan for about 377 N of real work at 0.5 MPa, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin. The unit features a G1/4 port, an M14x1.5 rod thread, and adjustable 20.5 mm air cushions at both ends to decelerate the payload smoothly.
Airtac JSI Series Standard Cylinder JSI40X800S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X800S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 JSI40X800S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×800 | 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 JSI40X800S Is Used
Packaging Line Diverter
Pushes light cardboard cartons between adjacent conveyor belts over a long 800 mm span, utilizing the 377 N safe working load at 0.5 MPa without overwhelming the packaging materials.
Vertical Parts Elevator
Lifts approximately 32 kg of plastic tote bins between floor levels in an automated storage system, relying on the -S magnet and DMSE sensors to confirm upper and lower positions.
Lab Sample Indexer
Moves test tube racks along an 800 mm stroke within a compact diagnostic machine where the shorter JIS profile footprint frees up critical space for surrounding analytical equipment.
Is the Airtac JSI Series Standard Cylinder JSI40X800S the Right Cylinder?
When sizing this 40 mm bore, stepping down to a 32 mm JSI drops the 0.5 MPa push force to 402 N, while moving up to a 50 mm bore increases it to 982 N for heavier payloads. If your application requires the piston to maintain its position during air loss or valve centering, be aware that a standard cylinder will drift; the end-of-stroke cushion only decelerates the rod and does not act as a brake, so you should add an external rod lock or pilot-operated check valve for secure load holding.
With an 800 mm stroke, the 16 mm rod is susceptible to bending under lateral stress. Always use an external guide rail to support the load and prevent side-loading, ensuring the piston travels strictly in tension or compression along its 30-800 mm/s operating speed range.
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 JSI40X800S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull, increasing to 879 N push and 739 N pull at 0.7 MPa, with a theoretical maximum of 128 kgf at 1.0 MPa. The air port is G1/4, the rod thread is M14x1.5, and the adjustable air cushion stroke is 20.5 mm at each end.
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 while retaining dual-side sensor grooves. It is not dimensionally interchangeable with ISO 15552, but offers the same double-acting air operation with a hard-anodized aluminum barrel.
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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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