Airtac JSI Series Standard Cylinder JSI40X330S
The AirTAC Airtac JSI Series Standard Cylinder JSI40X330S is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 330mm 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
- Stroke330 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 JSI40X330S
Delivering 628 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than an ISO 15552 cylinder 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. Because the -S suffix equips the piston with a magnet, you can drop CMSE or DMSE reed and electronic switches directly into the side grooves for position sensing. Plan for around 377 N of actual work at 0.5 MPa, which means it lifts about 32 kg vertically with a 2:1 safety margin. Air connects via a G1/4 port, and the unit travels at 30-800 mm/s.
The 330 mm stroke operates with a 20.5 mm adjustable air cushion at both ends to decelerate the rod smoothly. It is a true double-acting design, using air pressure for both extension and retraction, and reaches a theoretical maximum of 128 kgf at 1.0 MPa.
Airtac JSI Series Standard Cylinder JSI40X330S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X330S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 330 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 JSI40X330S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×330 | 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 JSI40X330S Is Used
Carton Pusher
Pushes light cardboard cartons along a packaging conveyor using the 628 N push force, fitting neatly into tight transfer stations.
Vertical Parts Lift
Raises 32 kg component trays through a 330 mm vertical cycle, benefiting from the compact JIS profile to minimize vertical headroom.
Gate Diversion
Actuates a sorting gate on an assembly line, using the built-in magnet and CMSE sensors to confirm the full extension position.
Is the Airtac JSI Series Standard Cylinder JSI40X330S 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 moving up to a 50 mm bore increases it to 982 N. Because this SKU includes the -S magnet, it is fully ready for CMSE or DMSE sensors; a standard no-S SKU cannot take a switch. You can mount it using LB foot, FA/FB flange, CA/CB/CR clevis, TC/TCM1/TCM2 trunnion brackets, or an I/Y/F/U rod knuckle.
At 330 mm of travel, the 16 mm rod is susceptible to bending under lateral stress, so an external guide should support the load to prevent side-loading. Note that a standard cylinder drifts when air is lost or the valve is centered, as the cushion only decelerates the piston near stroke end rather than locking it; use a pilot-operated check valve or external rod lock to hold a suspended load.
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 JSI40X330S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port size is G1/4.
The JSI series follows a JIS-standard profile and is physically shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore. It uses an extruded hard-anodized aluminum barrel without external rods to achieve this space saving.
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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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