This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X1430S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI40 Standard Cylinder SI40X1430S
The AirTAC Airtac SI40 Standard Cylinder SI40X1430S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 1430mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X1430S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1430 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X1430S
- 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 SI40 Standard Cylinder SI40X1430S
The AirTAC SI40X1430S is a discontinued double-acting ISO 15552 profile cylinder with a 40 mm bore and 1430 mm stroke. It delivers 628 N push force at 0.5 MPa via a G1/4 port. Because 1430 mm exceeds the 1200 mm standard maximum, this is a non-standard made-to-order stroke. AirTAC replaced the SI family with the SAI series; the SAI40X1430S is the direct replacement, retaining the same ISO 15552 mounting interface, bore, stroke, force and port.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The original SI accepted CS1-B/DS1-B sensors via its -S magnet; the SAI replacement uses current AirTAC switches. You can also choose carbon steel, SUS420J2 (A) or SUS304 (B) piston rods, and Viton H seals for high-heat environments.
Airtac SI40 Standard Cylinder SI40X1430S Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X1430S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X1430S |
| Bore size | Ø40 mm |
| Stroke | 1430 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI40X1430S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
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 | |
The SAI40X1430S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI40 Standard Cylinder SI40X1430S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1430 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI40 Standard Cylinder SI40X1430S Is Used
Long-Reach Diversion
Pushes packages across a wide conveyor belt sorting zone using its 1430 mm extended travel, relying on external guides to prevent rod bending.
Transfer Shuttle Actuation
Drives a sliding shuttle between machining stations over a long distance, using the G1/4 port for rapid 30-800 mm/s cycling.
Replacing the Airtac SI40 Standard Cylinder SI40X1430S with the SAI40X1430S
To replace the SI40X1430S, order the SAI40X1430S. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the G1/4 air port, and the M12x1.25 rod thread. Because this 1430 mm stroke exceeds the 1200 mm standard maximum, expect a made-to-order lead time. At 1430 mm, the Ø16 mm rod is highly susceptible to bending; you must use an external guide to prevent side loads. If you need less force, a 32 mm bore provides 402 N at 0.5 MPa; if you need more, a 50 mm bore gives 982 N. A plain cylinder does not hold load without live air—the cushion only decelerates. For load holding on air loss, use an external pilot check valve, or select the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X1430S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI40 Standard Cylinder SI40X1430S FAQ
Yes, the SI40X1430S is discontinued. The direct replacement is the AirTAC SAI40X1430S. It is dimensionally interchangeable per ISO 15552, keeping the same 40 mm bore, 1430 mm stroke, 628 N force, G1/4 port and mounting interface.
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At 0.7 MPa it pushes 879 N, and at 0.9 MPa it pushes 1130 N. The theoretical maximum force is 128 kgf at 1.0 MPa. The operating speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X1430S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X1430S replacement — usually within 7-8 hours.