This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX165S, 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 SI160AX165S
The AirTAC SI160 Standard Cylinder SI160AX165S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 165mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX165S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke165 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX165S
- 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 SI160AX165S
The AirTAC SI160AX165S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore, 165mm stroke, and a SUS420J2 stainless piston rod. It delivers a robust 10053N push force at 0.5MPa and operates at 30-500mm/s. The direct successor is the SAI160AX165S, sharing the same G3/4 port, M36x2 thread, and 50mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. The original -S magnet supports legacy CS1-B/DS1-B sensors, while a plain cylinder drifts without air; the SAIL or BSAI variants add lock functions.
Airtac SI160 Standard Cylinder SI160AX165S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX165S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX165S |
| Bore size | Ø160 mm |
| Stroke | 165 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 SAI160AX165S 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 SAI160AX165S 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 SI160AX165S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×165 | 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 SI160AX165S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 10053N push force at 0.5MPa with stable 160mm bore guidance.
Automated Welding Clamp
Holds thick steel assemblies in robotic welding cells, utilising the SUS420J2 stainless rod for spatter resistance.
Replacing the Airtac SI160 Standard Cylinder SI160AX165S with the SAI160AX165S
To replace the SI160AX165S, order the SAI160AX165S to retain the exact ISO 15552 mounting interface, 165mm stroke, and G3/4 port. Confirm your mounting accessory (LB, FA, CA, TC) and that the -S magnet is present for current AirTAC switches. The -A rod denotes SUS420J2 stainless steel; choose Viton H seals if temperatures exceed the standard -20 to +70C range. Sizing both ways: this 160mm bore yields 10053N push at 0.5MPa (2050kgf max at 1.0MPa), whereas a 200mm bore offers 15708N, and a 125mm bore provides 6136N. Because the stroke is under 300mm, side-load risks are minimal, but always guide external rods. Remember that standard cylinders do not hold loads without live air; for drop prevention, use an external pilot check valve or the SAIL lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX165S
- ✓ 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 SI160AX165S FAQ
Yes, the SI160AX165S is discontinued. The direct replacement is the SAI160AX165S. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 165mm stroke, 10053N force, G3/4 port, and mounting interface.
This double-acting cylinder features a G3/4 air port. It delivers a push force of 10053N and a pull force of 9425N at 0.5MPa. At 0.7MPa the push is 14074N, and at 0.9MPa it is 18095N. The theoretical maximum force is 2050kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX165S
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