Airtac JSI Series Standard Cylinder JSI40X100S
The AirTAC Airtac JSI Series Standard Cylinder JSI40X100S is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 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 JSI40X100S
Delivering 628 N of push force at 0.5 MPa, the AirTAC JSI40X100S is a double-acting JIS-standard 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 equivalent ISO 15552 cylinder of the same 40 mm bore. The bore dictates a G1/4 air port, a 16 mm rod with an M14x1.5 thread, and 20.5 mm adjustable air cushions at both ends to decelerate the piston smoothly.
The integrated -S piston magnet allows CMSE or DMSE reed and electronic switches to drop directly into the side sensor grooves for precise position detection. A heterogeneous two-way NBR piston seal retains grease, ensuring long, low-friction life. 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.
Airtac JSI Series Standard Cylinder JSI40X100S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X100S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 JSI40X100S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×100 | 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 JSI40X100S Is Used
Package Diverting
Actuates routing gates on packaging lines where the 528 N pull force at 0.5 MPa easily pushes light cartons onto auxiliary belts.
Small Part Clamping
Secures plastic housings during ultrasonic welding, using the built-in -S magnet to confirm clamp position before the cycle starts.
Pick and Place
Drives vertical lifting arms on PCB assembly machines, offering a compact footprint that saves valuable Z-axis space.
Is the Airtac JSI Series Standard Cylinder JSI40X100S 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. The 100 mm stroke is well within standard limits, so no side-load guide is strictly required, though external alignment is always good practice. Because this SKU includes the -S magnet, it is fully ready for CMSE/DMSE sensors. Remember that the adjustable cushion only decelerates the piston near the end of travel; it does not act as a brake. If the machine loses air or the valve is centered, the rod will drift, so an external rod lock or pilot-operated check valve is required to hold a suspended 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 JSI40X100S FAQ
The 40 mm bore generates 628 N push and 528 N pull at 0.5 MPa, increasing to 879 N push and 739 N pull at 0.7 MPa. The theoretical maximum force is 128 kgf at 1.0 MPa. It uses a G1/4 air port and operates at speeds between 30-800 mm/s.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore. It uses an extruded hard-anodized aluminum barrel without external rods to achieve this space saving, making it ideal for tight machine envelopes.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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