This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X1470S, 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 SI40X1470S
The AirTAC Airtac SI40 Standard Cylinder SI40X1470S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 1470mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X1470S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1470 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X1470S
- 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 SI40X1470S
The AirTAC SI40X1470S is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 1470mm stroke. Because 1470mm exceeds the 1200mm standard maximum for this bore, this is a non-standard, made-to-order length. It delivers 628 N push and 528 N pull at 0.5 MPa, utilizing a G1/4 port and M12x1.25 rod thread. The direct replacement is the SAI40X1470S, matching the exact ISO 15552 mounting interface, force, and dimensions.
The SAI upgrade introduces an upgraded piston seal featuring two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI lacked. The original -S magnet supports CS1-B/DS1-B legacy sensors, while the SAI uses current AirTAC switches.
Airtac SI40 Standard Cylinder SI40X1470S Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X1470S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X1470S |
| Bore size | Ø40 mm |
| Stroke | 1470 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 SAI40X1470S 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 SAI40X1470S 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 SI40X1470S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1470 | 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 SI40X1470S Is Used
Extended Reach Transfer
Pushes parts across wide conveyor gaps using the full 1470mm travel, relying on external guides to prevent rod bending during the long stroke.
High Bay Ejection
Ejects packed cartons from deep storage lanes, utilizing the 628 N push force at 0.5 MPa to clear obstacles safely.
Vertical Lowering
Lowers 32 kg fixtures smoothly using the adjustable 27mm air cushions, requiring a pilot check valve to prevent drifting on air loss.
Replacing the Airtac SI40 Standard Cylinder SI40X1470S with the SAI40X1470S
To replace the SI40X1470S, order the SAI40X1470S direct: verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/4 port, and the -S magnet for switch sensing. Sizing both ways: if 628 N push at 0.5 MPa is insufficient, step up to the 50mm bore (982 N); if oversized, drop to 32mm (402 N). A plain cylinder does not hold load without live air—the cushion only decelerates—so for vertical loads use an external pilot check valve or the SAIL/BSAI lock variant. Because the 1470mm stroke is non-standard and exceeds 300mm, you must support side loads with external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X1470S
- ✓ 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 SI40X1470S FAQ
Yes, the SI40X1470S is discontinued. The direct replacement is the SAI40X1470S. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 1470mm stroke, G1/4 port, and mounting interface.
This double-acting cylinder uses a G1/4 port. It delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X1470S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X1470S replacement — usually within 7-8 hours.