This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X1000TC, 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 SI40X1000TC
The AirTAC Airtac SI40 Standard Cylinder SI40X1000TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 1000mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X1000TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1000 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X1000TC
- 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 SI40X1000TC
The AirTAC SI40X1000TC is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 1000mm stroke. It delivers 628N push force at 0.5MPa via a G1/4 port. AirTAC replaced this legacy unit with the SAI40X1000TC, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, force, port and TC trunnion mount. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For sensing, note this specific SKU lacks the -S magnet, so it cannot accept CS1-B/DS1-B switches.
The SAI family also introduces lock and valve variants the SI lacked, including SAIL, SAIF and BSAI. Operating pressure is 0.15-1.0MPa, with a Viton H seal option extending temperature to 150C.
Airtac SI40 Standard Cylinder SI40X1000TC Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X1000TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X1000TC |
| Bore size | Ø40 mm |
| Stroke | 1000 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 SAI40X1000TC 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 SAI40X1000TC 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 SI40X1000TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1000 | 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 SI40X1000TC Is Used
Long-Stroke Diversion
Pushes packages across transfer lines with a 1000mm reach, utilizing the 628N push force at 0.5MPa for reliable routing.
Pallet Positioning
Shifts or indexes pallets laterally using the TC trunnion mount to accommodate frame articulation over long strokes.
Replacing the Airtac SI40 Standard Cylinder SI40X1000TC with the SAI40X1000TC
To replace the discontinued SI40X1000TC, order the SAI40X1000TC. Confirm the ISO 15552 TC trunnion interface, 40mm bore, 1000mm stroke, and G1/4 port (available in PT, G, or NPT threads). Because this SKU lacks a magnet, it cannot support sensors; if position detection is needed, select an SAI40X1000TC-S and use current AirTAC switches. When sizing, the 40mm bore yields 628N push at 0.5MPa; if more force is needed, the neighbouring 50mm bore provides 982N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Finally, at 1000mm stroke, prevent rod bending by guiding the load externally to avoid side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X1000TC
- ✓ 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 SI40X1000TC FAQ
Yes, the SI40X1000TC is discontinued. The direct replacement is the SAI40X1000TC. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 1000mm stroke, G1/4 port, force, and TC mounting interface.
The 40mm bore features a G1/4 air port and M12x1.25 rod thread. Force output is 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical max of 128kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X1000TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X1000TC replacement — usually within 7-8 hours.