This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X1110SH, 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 SI40X1110SH
The AirTAC SI40 Standard Cylinder SI40X1110SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 1110mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X1110SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1110 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X1110SH
- 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 SI40X1110SH
The AirTAC SI40X1110SH is a discontinued double-acting ISO 15552 profile cylinder with a 40 mm bore and 1110 mm stroke. Delivering 628 N push at 0.5 MPa through a G1/4 port, it is replaced directly by the SAI40X1110SH. This direct upgrade shares the exact ISO 15552 mounting interface, M12x1.25 rod thread and force ratings.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The -H suffix indicates a Viton seal for 0-150 C environments. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI40 Standard Cylinder SI40X1110SH Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X1110SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X1110SH |
| Bore size | Ø40 mm |
| Stroke | 1110 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 SAI40X1110SH 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 SAI40X1110SH 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 SI40X1110SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1110 | 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 SI40X1110SH Is Used
Long-Stroke Diversion
Drives sorting arms across wide conveyor belts where the 1110 mm travel and 879 N at 0.7 MPa push force reliably redirect heavy packages.
High-Reach Vertical Lift
Elevates pallets in automated storage racks, utilizing the 32 kg safe vertical lift capacity while maintaining stable high-temperature operation.
Heat-Resistant Actuation
Operates packaging sealing presses near ovens, leveraging the Viton -H seal up to 150 C and the 628 N push force at 0.5 MPa.
Replacing the Airtac SI40 Standard Cylinder SI40X1110SH with the SAI40X1110SH
To replace the SI40X1110SH, order the SAI40X1110SH. Confirm the ISO 15552 mounting interface, 40 mm bore, 1110 mm stroke, G1/4 port, and Viton -H seal. Because the 1110 mm stroke is long, use external guides to prevent rod bending and side-load wear. Sizing both ways: a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore yields 982 N. The cushion only decelerates; it does not hold load. For air-loss holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X1110SH
- ✓ 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 SI40X1110SH FAQ
Yes, the SI40X1110SH is discontinued. The direct replacement is the SAI40X1110SH. It shares the same ISO 15552 mounting interface, 40 mm bore, 1110 mm stroke, G1/4 port, and force ratings, fitting existing fixtures perfectly.
The G1/4 port bore delivers a push of 628 N and pull of 528 N at 0.5 MPa. At 0.7 MPa push is 879 N, and 1130 N at 0.9 MPa. The theoretical max force is 128 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X1110SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X1110SH replacement — usually within 7-8 hours.