This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX350S, 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 SI160BX350S
The AirTAC SI160 Standard Cylinder SI160BX350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX350S
- 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 SI160BX350S
The AirTAC SI160BX350S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 350mm stroke. Built with an extruded aluminum barrel, it delivers 10053 N push force at 0.5 MPa and uses a G3/4 air port with a 50mm adjustable cushion. The direct replacement is the SAI160BX350S, which matches the exact bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU includes a SUS304 stainless steel rod and a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160BX350S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX350S |
| Bore size | Ø160 mm |
| Stroke | 350 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 SAI160BX350S 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 SAI160BX350S 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 SI160BX350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×350 | 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 SI160BX350S Is Used
Heavy Press Stamping
Drives large forming presses requiring 10053 N push force at 0.5 MPa, utilizing the 350mm stroke to accommodate deep-draw tooling.
Automated Welding Clamp
Secures heavy chassis components during robotic welding, where the SUS304 stainless rod withstands splatter and corrosive shop environments.
Pallet Lowering Actuator
Manages the controlled descent of 512 kg loaded pallets in vertical lift applications, relying on the 50mm adjustable air cushions for end-of-stroke deceleration.
Replacing the Airtac SI160 Standard Cylinder SI160BX350S with the SAI160BX350S
To replace the SI160BX350S, order the SAI160BX350S and confirm the ISO 15552 mounting interface, 350mm stroke, G3/4 port, and mounting accessory. The -S magnet enables current AirTAC switches, while the -B rod provides SUS304 stainless steel. If sizing down, the 125mm bore yields 6136 N push at 0.5 MPa; if sizing up, the 200mm bore yields 15708 N. A plain cylinder drifts on air loss as the cushion only decelerates, so use an external rod lock or pilot check valve for load holding (or the SAIL/BSAI lock variant). For the 350mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX350S
- ✓ 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 SI160BX350S FAQ
Yes, the SI160BX350S is discontinued. The direct replacement is the SAI160BX350S. It features the same ISO 15552 mounting interface, 160mm bore, 350mm stroke, output force, G3/4 port, and mounting accessories, fitting directly into existing fixtures.
The 160mm bore 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 and a M36x2 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX350S replacement — usually within 7-8 hours.