This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X162, 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 SI40X162
The AirTAC Airtac SI40 Standard Cylinder SI40X162 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 162mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X162, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke162 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X162
- 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 SI40X162
The AirTAC SI40X162 is a discontinued double-acting ISO 15552 profile cylinder featuring a 40mm bore and 162mm stroke. It delivers 628 N push and 528 N pull at 0.5 MPa, utilizing a G1/4 port and M12x1.25 rod thread. AirTAC replaced this legacy unit with the SAI40X162, a direct upgrade retaining the exact ISO 15552 mounting interface, output force, and dimensions.
The SAI replacement incorporates an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding, the SAI family introduces SAIL and BSAI lock variants the SI lacked. Since this specific SKU lacks a magnet (-S), it cannot accept position sensors.
Airtac SI40 Standard Cylinder SI40X162 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X162 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X162 |
| Bore size | Ø40 mm |
| Stroke | 162 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 SAI40X162 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 SAI40X162 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 SI40X162
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×162 | 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 SI40X162 Is Used
Component Clamping
Secures mid-weight machined parts during milling with 628 N of clamping force at 0.5 MPa.
Package Diverting
Actuates routing gates on packaging lines, utilizing the 162mm stroke to redirect boxes efficiently.
Replacing the Airtac SI40 Standard Cylinder SI40X162 with the SAI40X162
To replace the SI40X162, order the SAI40X162, confirming the ISO 15552 interface, 40mm bore, 162mm stroke, G1/4 port, and mounting accessories. Because this non-magnetic SKU cannot host a sensor, order an -S variant if position detection is needed. For sizing, the 40mm bore yields 628 N push at 0.5 MPa; stepping down to a 32mm bore drops force to 402 N, while a 50mm bore increases it to 982 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for held loads. At 162mm stroke, side-load risks are minimal, but ensure correct alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X162
- ✓ 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 SI40X162 FAQ
Yes, the SI40X162 is discontinued. The direct replacement is the AirTAC SAI40X162. It features the same ISO 15552 mounting interface, 40mm bore, 162mm stroke, output force, and G1/4 port, fitting directly into existing fixtures.
The 40mm bore features a G1/4 air port. It provides 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 maximum force of 128 kgf at 1.0 MPa.
Request a Quote for the SAI40X162
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X162 replacement — usually within 7-8 hours.