This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X130S, 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 SI40X130S
The AirTAC Airtac SI40 Standard Cylinder SI40X130S 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 SAI40X130S, 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 → SAI40X130S
- 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 SI40X130S
The AirTAC SI40X130S is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 130mm stroke. Providing 628N push force at 0.5MPa via a G1/4 port, it is replaced by the SAI40X130S. This direct upgrade shares identical ISO 15552 mounting dimensions, bore, stroke, and output force, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI-S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL lock, SAIF valve, and BSAI clamp-lock variants absent in the SI line.
Airtac SI40 Standard Cylinder SI40X130S Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X130S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X130S |
| 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 SAI40X130S 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 SAI40X130S 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 SI40X130S
| 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 SI40X130S Is Used
Package Diversion
Actuating routing gates on packaging lines where the 528N pull force at 0.5MPa easily redirects standard cartons.
Clamp Actuation
Driving small pneumatic clamps in machining fixtures, utilising the 628N push force for secure workholding.
Stopper Cylinder
Functioning as a raised stop in material handling conveyors, safely halting items up to the 32kg vertical lift limit.
Replacing the Airtac SI40 Standard Cylinder SI40X130S with the SAI40X130S
To replace this SI40X130S with the SAI40X130S, verify the ISO 15552 mounting interface, 40mm bore, 130mm stroke, G1/4 port (PT/G/NPT), and the -S magnet for current AirTAC switches. Sizing options include stepping up to a 50mm bore or checking the 879N push force at 0.7MPa. Note that standard cylinders drift without live air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. Since the 130mm stroke is under 300mm, severe side-load risks are minimal, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X130S
- ✓ 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 SI40X130S FAQ
Yes, the SI40X130S is discontinued. The direct replacement is the SAI40X130S, which shares the same ISO 15552 mounting interface, 40mm bore, 130mm stroke, force, and G1/4 port, fitting directly into existing fixtures.
This 40mm bore cylinder features a G1/4 air port and M12x1.25 rod thread. It delivers 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. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X130S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X130S replacement — usually within 7-8 hours.