This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X465, 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 SI40X465
The AirTAC Airtac SI40 Standard Cylinder SI40X465 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 465mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X465, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke465 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X465
- 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 SI40X465
The AirTAC SI40X465 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 465mm stroke. It delivers 628N push force at 0.5MPa through a G1/4 port. The direct replacement is the SAI40X465, which shares identical mounting, bore, stroke, force, and port dimensions for seamless fixture integration.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches only fit the -S version.
Airtac SI40 Standard Cylinder SI40X465 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X465 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X465 |
| Bore size | Ø40 mm |
| Stroke | 465 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 SAI40X465 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 SAI40X465 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 SI40X465
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×465 | 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 SI40X465 Is Used
Carton Diverting
Pushes packages at 90 degrees on packaging lines using 628N push force, with the 465mm stroke clearing wider product profiles.
Pallet Handling
Actuates lightweight gating or stops on roller conveyors where a 32kg vertical lift margin and G1/4 porting are sufficient.
Component Ejection
Ejects machined parts from fixtures, relying on the 27mm adjustable air cushions to decelerate the rod smoothly at stroke end.
Replacing the Airtac SI40 Standard Cylinder SI40X465 with the SAI40X465
To replace the SI40X465, order the SAI40X465 keeping the identical ISO 15552 interface, 40mm bore, 465mm stroke, G1/4 port (PT/G/NPT), and mounting accessory. This non-S SKU lacks a magnet and cannot accept a sensor. If you need more force, the 50mm bore offers 982N push at 0.5MPa; if less is needed, the 32mm bore provides 402N. For the 465mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X465
- ✓ 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 SI40X465 FAQ
Yes, the AirTAC SI40X465 is discontinued. The direct replacement is the SAI40X465. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 465mm stroke, 628N force, G1/4 port, and mounting interface.
The 40mm bore uses a G1/4 air port and a 16mm rod. At 0.5MPa it provides 628N push and 528N pull force. At 0.7MPa push is 879N, and at 0.9MPa it is 1130N. The theoretical maximum force is 128kgf at 1.0MPa.
Request a Quote for the SAI40X465
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X465 replacement — usually within 7-8 hours.