Airtac JSI Series Standard Cylinder JSI40X300TC
The AirTAC Airtac JSI Series Standard Cylinder JSI40X300TC is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 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 JSI40X300TC
Delivering 628 N of push force at 0.5 MPa, the AirTAC JSI40X300TC is a double-acting JIS-standard profile cylinder built for tight machinery layouts. Its extruded hard-anodized aluminum barrel omits external rods, making the unit noticeably shorter and more compact than a same-bore ISO 15552 cylinder. The internal two-way piston seal retains grease for a long, low-friction service life.
Equipped with a G1/4 port and a 16 mm carbon steel rod, this 40 mm bore model travels a 300 mm stroke at speeds of 30-800 mm/s. Plan for about 377 N of real work at 0.5 MPa, which safely lifts roughly 32 kg vertically with a 2:1 margin. Because this specific SKU lacks the -S magnet, it cannot host CMSE or DMSE position switches.
Airtac JSI Series Standard Cylinder JSI40X300TC Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X300TC |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 JSI40X300TC
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 JSI40X300TC Is Used
Package Diverter
Pushes lightweight cardboard cartons on a 300 mm lane shift using 628 N of thrust at 0.5 MPa.
Textile Loom Tensioner
Adjusts yarn guide bars on a pivoting TC trunnion to maintain precise fabric tension during weaving.
Small Parts Ejector
Kicks plastic injection-molded runners off a press bed, safely moving parts weighing up to 32 kg.
Is the Airtac JSI Series Standard Cylinder JSI40X300TC the Right Cylinder?
When sizing this 40 mm bore unit against adjacent bores, note the JSI32 yields 402 N while the JSI50 provides 982 N of push at 0.5 MPa. The included TC trunnion mount handles pivoting loads well, but because this is a 300 mm stroke, external guides are recommended to prevent rod bending under side loads. Remember that standard air cushions only decelerate the piston near stroke end; they do not function as a brake, so add an external rod lock or pilot-operated check valve if the load must be held vertically when air pressure drops.
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 JSI40X300TC FAQ
This 40 mm bore cylinder features a G1/4 port and delivers 628 N push / 528 N pull at 0.5 MPa, 879 N push / 739 N pull at 0.7 MPa, and a theoretical maximum of 128 kgf at 1.0 MPa.
The extruded aluminum barrel removes external rods, making the JSI40X300TC shorter and more compact than an ISO 15552 cylinder of the same bore, which helps engineers fit 300 mm of travel into tighter machine footprints.
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
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