This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40AX130S, 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 SI40AX130S
The AirTAC Airtac SI40 Standard Cylinder SI40AX130S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 130mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40AX130S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke130 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40AX130S
- 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 SI40AX130S
The AirTAC SI40AX130S is a discontinued double-acting ISO 15552 profile cylinder featuring a 40mm bore, 130mm stroke, and a SUS420J2 stainless piston rod. Delivering 628N push force at 0.5 MPa, it is replaced by the SAI40AX130S. This direct upgrade shares the exact ISO 15552 mounting interface, G1/4 port, and output force.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The built-in magnet supports CS1-B/DS1-B switches, and a Viton H seal option raises heat resistance to 150C.
Airtac SI40 Standard Cylinder SI40AX130S Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40AX130S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40AX130S |
| Bore size | Ø40 mm |
| Stroke | 130 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 SAI40AX130S 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 SAI40AX130S 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 SI40AX130S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×130 | 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 SI40AX130S Is Used
Stainless Rod Clamping
Ideal for packaging lines where the SUS420J2 rod resists washdown moisture while providing 628N of clamping thrust.
Material Diversion
Delivers rapid 130mm stroke diversion gates at 30-800 mm/s without overwhelming structural mounts.
Replacing the Airtac SI40 Standard Cylinder SI40AX130S with the SAI40AX130S
To replace the SI40AX130S, order the SAI40AX130S. Verify your ISO 15552 mounting fixtures, 130mm stroke, and G1/4 port. The -A suffix denotes the SUS420J2 stainless rod, and -S confirms the piston magnet for legacy CS1-B/DS1-B sensors. For sizing, the neighbouring 32mm bore yields 402N push at 0.5 MPa, while the 50mm bore provides 982N. Note that plain cylinders drift on air loss; cushions only decelerate. For load holding, use an external pilot check valve or explore the SAIL lock and BSAI clamp-lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40AX130S
- ✓ 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 SI40AX130S FAQ
Yes, the SI40AX130S is discontinued. The direct replacement is the SAI40AX130S. It shares the same ISO 15552 mounting interface, 40mm bore, 130mm stroke, G1/4 port, and force ratings, fitting existing fixtures perfectly.
The 40mm bore operates at 30-800 mm/s with a G1/4 port. Forces are: 628N push and 528N pull at 0.5 MPa, 879N push at 0.7 MPa, 1130N push at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40AX130S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40AX130S replacement — usually within 7-8 hours.