This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X1300S, 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 SI40X1300S
The AirTAC Airtac SI40 Standard Cylinder SI40X1300S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 1300mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X1300S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X1300S
- 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 SI40X1300S
The AirTAC SI40X1300S is a discontinued double-acting ISO 15552 profile cylinder with a 40 mm bore and 1300 mm stroke. Because 1300 mm exceeds the 1200 mm standard limit for this bore, it is a non-standard, made-to-order length. It delivers 628 N push force at 0.5 MPa. The direct replacement is the SAI40X1300S, matching the exact bore, stroke, G1/4 port, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This -S model has a magnet for CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI40 Standard Cylinder SI40X1300S Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X1300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X1300S |
| Bore size | Ø40 mm |
| Stroke | 1300 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 SAI40X1300S 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 SAI40X1300S 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 SI40X1300S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1300 | 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 SI40X1300S Is Used
Extended Reach Transfer
Pushes products across wide conveyor gaps using the full 1300 mm extension, relying on external guides to prevent rod bending during the long stroke.
High Bay Pusher
Actuates storage diverts in automated warehousing, utilizing the 628 N push force at 0.5 MPa to shift totes at the safe 377 N working load.
Replacing the Airtac SI40 Standard Cylinder SI40X1300S with the SAI40X1300S
To replace the SI40X1300S, order the SAI40X1300S keeping the 40 mm bore, 1300 mm stroke, G1/4 port, and ISO 15552 mounting interface. Confirm your thread option (PT, G, or NPT) and mounting accessory. Since 1300 mm is a non-standard stroke exceeding the 1200 mm max, expect made-to-order lead times and ensure external guides are used to prevent rod bending over this long extension. If sizing down, the 32 mm bore offers 402 N at 0.5 MPa; if sizing up, the 50 mm bore provides 982 N. A plain cylinder drifts on air loss as the cushion only decelerates, so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X1300S
- ✓ 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 SI40X1300S FAQ
Yes, the SI40X1300S is discontinued. The direct replacement is the SAI40X1300S. It is dimensionally interchangeable per ISO 15552, keeping the same 40 mm bore, 1300 mm stroke, G1/4 port, and mounting interface, so it fits existing fixtures perfectly.
This double-acting cylinder has a G1/4 air 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. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X1300S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X1300S replacement — usually within 7-8 hours.