This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX325, 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 SI160BX325
The AirTAC SI160 Standard Cylinder SI160BX325 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 325mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX325, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke325 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX325
- 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 SI160BX325
The AirTAC SI160BX325 is a discontinued double-acting ISO 15552 profile cylinder with a 325 mm stroke and a SUS304 stainless steel piston rod. Delivering 10053 N push force at 0.5 MPa, it is replaced by the SAI160BX325. This direct upgrade shares the same G3/4 port, M36x2 thread, and ISO 15552 mounting interface for existing fixtures.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160BX325 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX325 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX325 |
| Bore size | Ø160 mm |
| Stroke | 325 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 SAI160BX325 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 SAI160BX325 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 SI160BX325
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×325 | 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 SI160BX325 Is Used
Heavy Machinery Forming
Drives large press platens and forming dies requiring 10053 N thrust at 0.5 MPa with a 325 mm travel distance.
Automated Clamp Systems
Actuates robust clamping fixtures on large automotive components using the corrosion-resistant SUS304 rod.
Replacing the Airtac SI160 Standard Cylinder SI160BX325 with the SAI160BX325
To replace the SI160BX325, order the SAI160BX325 keeping the 160 mm bore, 325 mm stroke, and ISO 15552 mounting. Confirm the G3/4 port and SUS304 rod. For sizing, the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. The 325 mm stroke requires external guides to prevent rod bending under side loads. Air cushions only decelerate; use an external rod lock or pilot check valve for load holding, or choose the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX325
- ✓ 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 SI160BX325 FAQ
Yes, the SI160BX325 is discontinued. The direct replacement is the SAI160BX325, which shares the same ISO 15552 mounting interface, 160 mm bore, 325 mm stroke, output force, and G3/4 port.
It operates at 30-500 mm/s with a G3/4 port and M36x2 thread. 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 maximum theoretical force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX325
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX325 replacement — usually within 7-8 hours.