This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X1310S, 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 SI40X1310S
The AirTAC Airtac SI40 Standard Cylinder SI40X1310S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 1310mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X1310S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1310 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X1310S
- 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 SI40X1310S
The AirTAC SI40X1310S is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 1310mm stroke. Because 1310mm exceeds the 1200mm maximum standard stroke for this bore, it is a non-standard made-to-order unit. It delivers 628N push force at 0.5MPa through a G1/4 port. The direct replacement is the SAI40X1310S, matching the bore, stroke, force, port and ISO 15552 mounting interface exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. Rod material options include carbon steel, SUS420J2 or SUS304.
Airtac SI40 Standard Cylinder SI40X1310S Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X1310S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X1310S |
| Bore size | Ø40 mm |
| Stroke | 1310 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 SAI40X1310S 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 SAI40X1310S 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 SI40X1310S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1310 | 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 SI40X1310S Is Used
Long-Stroke Diversion
Actuates routing gates on packaging lines where the 1310mm travel shifts products between parallel conveyors.
Vertical Material Lift
Raises light pallets or trays; the 32kg vertical lift capacity at 0.5MPa suits tier-to-tier elevation changes.
Transfer Pusher
Pushes workpieces between machining stations, using the adjustable 27mm cushion to decelerate at stroke end.
Replacing the Airtac SI40 Standard Cylinder SI40X1310S with the SAI40X1310S
To replace the SI40X1310S, order the SAI40X1310S to get the exact ISO 15552 mounting interface, 40mm bore, 1310mm stroke, G1/4 port and -S magnet. This 1310mm stroke exceeds the 1200mm standard, so expect a made-to-order lead time. Because of the long stroke, use an external guide to prevent rod bending and side-load wear. If sizing down, a 32mm bore gives 402N push at 0.5MPa; sizing up to 50mm yields 982N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X1310S
- ✓ 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 SI40X1310S FAQ
Yes, the SI40X1310S is discontinued. The direct replacement is the AirTAC SAI40X1310S. It is dimensionally interchangeable per ISO 15552, keeping the same 40mm bore, 1310mm stroke, 628N force, G1/4 port and mounting fixtures.
It uses a G1/4 air port. 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 SAI40X1310S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X1310S replacement — usually within 7-8 hours.