Airtac JSI Series Standard Cylinder JSI40X145
The AirTAC Airtac JSI Series Standard Cylinder JSI40X145 is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 145mm 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
- Stroke145 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 JSI40X145
Delivering 628 N of push force at 0.5 MPa, the AirTAC JSI40X145 is a double-acting JIS-standard profile cylinder built for tight machinery layouts. It is intentionally shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore, saving valuable space without sacrificing performance. The extruded hard-anodized aluminum barrel sheds external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life.
Because this specific SKU lacks the -S magnet suffix, it cannot accept CMSE or DMSE position switches. For sizing your pneumatics, plan for about 377 N of real work at 0.5 MPa, which means it lifts roughly 32 kg vertically with a 2:1 safety margin. The unit features a G1/4 air port, an M14x1.5 rod thread, and adjustable air cushions at both ends to smooth out the 145 mm stroke.
Airtac JSI Series Standard Cylinder JSI40X145 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X145 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 145 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 JSI40X145
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×145 | 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 JSI40X145 Is Used
Clamping Small Castings
Provides 628 N of push force at 0.5 MPa to secure aluminium die-cast parts during secondary CNC milling operations.
Package Diverting
Extends 145 mm to push light cardboard cartons off a main packaging line onto a secondary routing belt.
Component Insertion
Presses small bushings or bearings into housings on an automated assembly fixture with smooth end-cushioning.
Is the Airtac JSI Series Standard Cylinder JSI40X145 the Right Cylinder?
When sizing this 40 mm bore, stepping down to a 32 mm JSI drops the 0.5 MPa push force to 402 N, while moving up to a 50 mm bore increases it to 982 N. For mounting, you can use LB foot, FA/FB flange, CA/CB/CR clevis, TC/TCM1/TCM2 trunnion brackets, or an I/Y/F/U rod knuckle. Since this 145 mm stroke is under 300 mm, standard rod-bending concerns are minimal, but always guide the load to prevent side-loading the piston. Remember that a standard cylinder drifts when air is lost or a valve is centered; the air cushion only decelerates the piston near the end of travel and acts as no brake. To hold a load securely, install 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 JSI40X145 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, and the rod-end thread is M14x1.5.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore. Also, because this specific SKU lacks the -S magnet, it cannot use CMSE or DMSE sensors; you would need the -S variant for switch readiness.
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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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