Airtac JSI Series Standard Cylinder JSI40X50CA
The AirTAC Airtac JSI Series Standard Cylinder JSI40X50CA is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 JSI40X50CA
Delivering 628 N of push force at 0.5 MPa, this double-acting 40 mm bore unit is built around a JIS-standard extruded aluminium profile that is noticeably shorter than an equivalent ISO 15552 cylinder, saving valuable space on compact machinery. The hard-anodized barrel omits external rods to resist wear, while the two-way NBR piston seal retains grease for a long, low-friction service life. It features a G1/4 port and a 20.5 mm adjustable air cushion at each end.
For practical sizing, plan for around 377 N of real work at 0.5 MPa, which translates to lifting about 32 kg vertically with a 2:1 safety margin. Because this specific SKU lacks the -S magnet option, it cannot accept CMSE or DMSE position switches. If your application requires end-of-stroke detection, you must select the -S variant instead.
Airtac JSI Series Standard Cylinder JSI40X50CA Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X50CA |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 JSI40X50CA
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSI40X50CA Is Used
Packaging Folder Mechanism
Drives the folding arms on a medium-speed carton erector, using the 628 N push force to cleanly crease heavy cardboard.
Pivoting Diverter Gate
Uses the CA clevis mount to swing a lightweight aluminum guide rail, sorting small parts flowing down a packaging line.
Pallet Stopper Arm
Acts as a pneumatic stop for empty pallets entering a stretch wrapper, holding position momentarily via the clevis joint.
Is the Airtac JSI Series Standard Cylinder JSI40X50CA the Right Cylinder?
When sizing this 40 mm bore, stepping down to a 32 mm JSI drops the push force to 402 N at 0.5 MPa, whereas moving up to a 50 mm bore increases it to 982 N. This model uses a CA clevis mounting accessory, ideal for pivoting articulations. Remember that the standard air cushion only decelerates the piston near the stroke ends; it will not hold a load vertically if air pressure drops. To prevent drifting when air is lost or a valve is centered, fit an external rod lock or a pilot-operated check valve. At a 50 mm stroke, side-load stress on the 16 mm rod is minimal, so no additional guide is strictly required.
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 JSI40X50CA FAQ
This 40 mm bore cylinder has a G1/4 air 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.
The JIS-standard extruded profile makes this unit shorter and more compact than an ISO 15552 cylinder of the same bore, which helps reduce overall machine footprint. It is not dimensionally interchangeable with ISO 15552, but offers the same hard-anodized aluminum barrel durability.
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.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSI Series Standard Cylinder JSI40X50CA
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.