This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX750S, 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 SI160BX750S
The AirTAC SI160 Standard Cylinder SI160BX750S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 750mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX750S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke750 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX750S
- 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 SI160BX750S
The AirTAC SI160BX750S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 750 mm stroke, and a SUS304 stainless steel piston rod. Delivering 10053 N of push force at 0.5 MPa, it is replaced by the SAI160BX750S. This direct successor shares the exact ISO 15552 mounting interface, G3/4 port, and output force, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI's built-in magnet supports legacy CS1-B/DS1-B sensors, while a plain cylinder drifts on air loss; for load holding, consider the SAIL or BSAI lock variants.
Airtac SI160 Standard Cylinder SI160BX750S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX750S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX750S |
| Bore size | Ø160 mm |
| Stroke | 750 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 SAI160BX750S 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 SAI160BX750S 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 SI160BX750S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×750 | 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 SI160BX750S Is Used
Heavy Machinery Forming
Drives large press beds and forming dies requiring sustained high force over an extended 750 mm travel distance.
Palletized Material Lift
Raises heavy palletized loads in automated warehousing, relying on the 512 kg vertical lift capacity with a safe margin.
Large Component Indexing
Shifts heavy cast or machined components between CNC stations, utilizing the robust 40 mm SUS304 rod.
Replacing the Airtac SI160 Standard Cylinder SI160BX750S with the SAI160BX750S
To replace the SI160BX750S, order the SAI160BX750S, confirming the ISO 15552 mounting interface, 160 mm bore, 750 mm stroke, G3/4 port, and mounting accessory. The -S magnet and -B SUS304 rod are retained. Sizing both ways: a 200 mm bore yields 15708 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. At 750 mm stroke, prevent rod bending by using an external guide to manage side loads. Note that air cushions only decelerate; they do not hold loads. For secure holding without air, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF valve option for smaller bores.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX750S
- ✓ 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 SI160BX750S FAQ
Yes, the SI160BX750S is discontinued. The direct replacement is the SAI160BX750S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 750 mm stroke, output force, G3/4 port, and mounting fixtures.
The G3/4 port supplies the 40 mm rod. Force ratings are 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 maximum of 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX750S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX750S replacement — usually within 7-8 hours.