Airtac JSI Series Standard Cylinder JSI40X150STC
The AirTAC Airtac JSI Series Standard Cylinder JSI40X150STC is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 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 JSI40X150STC
Delivering 628 N of push force at 0.5 MPa, the AirTAC JSI40X150STC is a double-acting JIS-standard profile cylinder built for tight machinery layouts. It is explicitly shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore, saving valuable space without sacrificing power. 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 the SKU includes the -S suffix, a built-in piston magnet lets CMSE or DMSE switches drop directly into the side grooves for position sensing. For real-world sizing, plan for about 377 N of actual work at 0.5 MPa, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin. Air connects via a G1/4 port, and the unit operates smoothly at speeds between 30-800 mm/s.
Airtac JSI Series Standard Cylinder JSI40X150STC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X150STC |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 JSI40X150STC
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×150 | 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 JSI40X150STC Is Used
Package Diverting
Pushes lightweight cardboard cartons at 90 degrees on a sorting line using the 628 N push force and 150 mm travel.
Small Part Ejection
Ejects machined plastic components from a fixture quickly, relying on the 30-800 mm/s speed range and grease-retaining seal.
Bin Lid Actuation
Opens and closes access hoppers on storage silos where the compact JIS profile saves headroom over standard ISO units.
Is the Airtac JSI Series Standard Cylinder JSI40X150STC the Right Cylinder?
When sizing this 40 mm bore, stepping down to a 32 mm version drops the 0.5 MPa push force to 402 N, while stepping up to a 50 mm bore increases it to 982 N. The included TC trunnion mount provides a pivot axis that accommodates slight misalignment, making it ideal for mid-stroke actuation. Since this model lacks an external rod lock, the piston will drift if air pressure is lost or the valve is centered; the adjustable air cushions only decelerate the rod near the end caps. To suspend a load safely during an emergency stop, add a pilot-operated check valve or an external locking mechanism.
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 JSI40X150STC FAQ
This 40 mm bore cylinder features a G1/4 port and an M14x1.5 rod thread. It delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push and 739 N pull at 0.7 MPa, with a theoretical maximum of 128 kgf at 1.0 MPa.
No, it is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 unit of the same bore, so the footprints differ. However, the -S magnet allows CMSE or DMSE sensors to drop into the side grooves, and it supports TC trunnion, LB foot, and FA flange mounts.
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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.
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Most inquiries answered within 7-8 hours.
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