Airtac JSI Series Standard Cylinder JSI40X240TC
The AirTAC Airtac JSI Series Standard Cylinder JSI40X240TC is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 240mm 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
- Stroke240 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 JSI40X240TC
Generating 628 N of push force at 0.5 MPa, this double-acting AirTAC JIS profile cylinder saves valuable space on tight machines by being noticeably shorter than an equivalent ISO 15552 bore. The extruded hard-anodized aluminum barrel uses no external rods, while a two-way piston seal retains grease for a long, low-friction service life. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position switches.
For practical sizing, plan for roughly 377 N of real work at 0.5 MPa, which translates to lifting about 32 kg vertically with a 2:1 safety margin. The unit features a G1/4 port, an M14x1.5 rod thread, and 20.5 mm adjustable air cushions at both ends to absorb impact. If your sequence needs dual rods or a custom stroke, consider the related JSID or JSIJ variants.
Airtac JSI Series Standard Cylinder JSI40X240TC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X240TC |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 240 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 JSI40X240TC
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×240 | 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 JSI40X240TC Is Used
Gripper Actuation
Provides the 528 N pull force at 0.5 MPa needed to retract and hold material grippers on automated assembly lines.
Package Diverters
Strokes 240 mm to push small cardboard cartons from a main conveyor belt into a secondary packing lane.
Pallet Stop Arms
Extends into a pallet flow lane to halt incoming wooden pallets, handling the impact via its adjustable cushions.
Is the Airtac JSI Series Standard Cylinder JSI40X240TC the Right Cylinder?
When sizing this 40 mm bore, dropping down to a JSI32 drops the output to 402 N push, while stepping up to a JSI50 increases it to 982 N. The integrated TC trunnion mount provides a pivoting axis ideal for articulated mechanisms. Remember that standard air cushions only decelerate the piston near the end of travel; they do not act as a brake. If the machine loses air, the rod will drift, so fit an external rod lock or pilot-operated check valve for suspended loads. Additionally, the 240 mm stroke is long enough that you should guide the load to prevent rod bending and premature seal wear.
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 JSI40X240TC 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.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE sensors; you would need the -S variant for position detection.
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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.
Related AirTAC JSI Cylinders
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