This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX375S, 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 SI160 Standard Cylinder SI160AX375S
The AirTAC SI160 Standard Cylinder SI160AX375S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 375mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX375S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke375 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX375S
- 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 SI160 Standard Cylinder SI160AX375S
The AirTAC SI160AX375S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 375 mm stroke. It delivers 10053 N push force at 0.5 MPa. The direct replacement is the SAI160AX375S, matching the interface, force, G3/4 port, and stroke. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. This unit has the SUS420J2 stainless rod (-A) and a magnet (-S) for CS1-B/DS1-B sensors.
The SAI family adds SAIL and BSAI lock variants absent in the SI line. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI160 Standard Cylinder SI160AX375S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX375S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX375S |
| Bore size | Ø160 mm |
| Stroke | 375 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160AX375S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160AX375S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160AX375S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×375 | 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 SI160 Standard Cylinder SI160AX375S Is Used
Heavy Machinery Forming
Drives large forming or stamping presses requiring 10053 N push force at 0.5 MPa, utilizing the 375 mm stroke to actuate heavy tooling.
Large Clamp Actuation
Secures oversized components in machining fixtures, relying on the SUS420J2 stainless rod for corrosion resistance in harsh environments.
Replacing the Airtac SI160 Standard Cylinder SI160AX375S with the SAI160AX375S
To replace the discontinued SI160AX375S, order the SAI160AX375S. It is dimensionally interchangeable per the ISO 15552 mounting interface, keeping the 160 mm bore, 375 mm stroke, 10053 N output, and G3/4 port. Confirm your mounting accessory (LB, FA, TC) and thread type (PT, G, NPT). Because this unit has the -S magnet, you can use legacy CS1-B/DS1-B switches; the SAI takes current AirTAC sensors. The -A rod is SUS420J2 stainless steel. When sizing both ways, neighboring bores offer different forces: the 125 mm bore gives 6136 N push at 0.5 MPa, while the 200 mm bore gives 15708 N. At 0.7 MPa this 160 mm bore reaches 14074 N. For the 375 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder does not hold load without live air; for load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX375S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160AX375S FAQ
Yes, the SI160AX375S is discontinued. The direct replacement is the SAI160AX375S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 375 mm stroke, 10053 N force, and G3/4 port. The SAI features an upgraded piston seal with two Y-shaped elements for lower start-up pressure.
The 160 mm bore cylinder delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s. It uses a G3/4 port, a 50 mm adjustable cushion, and an M36x2 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX375S
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