Airtac JSI Series Standard Cylinder JSI40X190S
The AirTAC Airtac JSI Series Standard Cylinder JSI40X190S is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 190mm 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
- Stroke190 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 JSI40X190S
Delivering 628 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable space on compact machines by being noticeably 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 heterogeneous two-way piston seal retains grease for a long, low-friction service life. Because this SKU includes the -S magnet, you can drop CMSE or DMSE reed or electronic switches directly into the side grooves for precise end-of-stroke detection. Air connects via a G1/4 port, and the 16 mm carbon steel rod features an M14x1.5 thread. For practical sizing, plan for about 377 N of real work at 0.5 MPa, which equates to lifting roughly 32 kg vertically with a 2:1 safety margin.
The unit travels a 190 mm stroke at speeds between 30 and 800 mm/s, decelerating smoothly via 20.5 mm adjustable air cushions at both ends. Operating pressure ranges from 0.15 to 1.0 MPa, and the robust NBR piston seal handles environments from -20 to +70 C. If your application requires opposing synchronous movement or a custom stroke length, AirTAC also offers the related JSID double-rod and JSIJ adjustable-stroke variants.
Airtac JSI Series Standard Cylinder JSI40X190S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X190S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 190 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 JSI40X190S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×190 | 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 JSI40X190S Is Used
Packaging Diverter
Pushes light cartons at 628 N onto an adjacent packaging belt, using the -S magnet to trigger the CMSE sensor and confirm the 190 mm divert stroke.
Small Part Ejection
Ejects molded plastic parts from a 40 mm bore press, relying on the 20.5 mm adjustable air cushions to prevent endcap impact at high cycle rates.
Vertical Part Lift
Raises lightweight plastic totes in a pick-and-place station, safely handling loads up to 32 kg with a 2:1 vertical lift margin at 0.5 MPa.
Is the Airtac JSI Series Standard Cylinder JSI40X190S the Right Cylinder?
When sizing this 40 mm bore, compare your actual load against the 628 N push and 528 N pull figures at 0.5 MPa. If you need less force, dropping down to a 32 mm JSI bore lowers the output to 402 N push; stepping up to a 50 mm bore increases it to 982 N push. At 190 mm of travel, you are well within the 1200 mm standard stroke limit, so no side-load guide is strictly required, but always ensure rigid mounting using LB foot, FA/FB flange, CA/CB/CR clevis, TC/TCM1/TCM2 trunnion, or an I/Y/F/U rod knuckle. Remember that a standard cylinder drifts if air pressure is lost or the valve is centered—the cushion only decelerates the piston near the stroke end. To hold a load securely in a vertical lift, integrate 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 JSI40X190S FAQ
This 40 mm bore cylinder delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push and 739 N pull at 0.7 MPa, and a theoretical maximum of 128 kgf at 1.0 MPa. 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 bore, saving machine space. It uses an extruded aluminum barrel with no external rods and includes the -S magnet for CMSE/DMSE sensors.
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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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