This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X300SN, 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 SI160X300SN
The AirTAC SI160 Standard Cylinder SI160X300SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X300SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X300SN
- 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 SI160X300SN
The AirTAC SI160X300SN is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 300 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and 50 mm adjustable cushions. The direct replacement is the SAI160X300SN, retaining identical ISO 15552 mounting dimensions, output force, and stroke.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The NBR (-N) seal suits -20 to +70 C, while Viton H extends this to 150 C. The magnet (-S) works with legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X300SN Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X300SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X300SN |
| Bore size | Ø160 mm |
| Stroke | 300 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 SAI160X300SN 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 SAI160X300SN 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 SI160X300SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×300 | 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 SI160X300SN Is Used
Heavy Machinery Forming
Drives large forming dies and heavy-duty presses requiring 10053 N thrust at 0.5 MPa with stable 160 mm bore rigidity.
Automated Clamp Fixtures
Secures oversized components during machining, utilizing the 50 mm adjustable air cushions to decelerate heavy 160 mm payloads smoothly.
Replacing the Airtac SI160 Standard Cylinder SI160X300SN with the SAI160X300SN
To replace the SI160X300SN, order the SAI160X300SN. It is a direct per ISO 15552 mounting-interface dimensions, matching the 160 mm bore, 300 mm stroke, G3/4 port, and NBR seal. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B). For sizing both ways: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. At 300 mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X300SN
- ✓ 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 SI160X300SN FAQ
Yes, the SI160X300SN is discontinued. The direct replacement is the SAI160X300SN. It shares the same ISO 15552 mounting interface, 160 mm bore, 300 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly while upgrading the piston seal.
The 160 mm bore features a G3/4 port and M36x2 thread. It 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X300SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X300SN replacement — usually within 7-8 hours.