This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX30S, 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 SI160BX30S
The AirTAC SI160 Standard Cylinder SI160BX30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 30mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke30 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX30S
- 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 SI160BX30S
The AirTAC SI160BX30S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 30 mm stroke. It delivers 10053 N push force at 0.5 MPa and includes a SUS304 stainless piston rod (-B) alongside a magnet for position sensing (-S). AirTAC replaced this legacy unit with the SAI160BX30S, a direct sharing the exact ISO 15552 mounting interface, G3/4 port, and 2050 kgf maximum force.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI-S uses CS1-B/DS1-B sensors, while the SAI accepts current AirTAC switches.
Airtac SI160 Standard Cylinder SI160BX30S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX30S |
| Bore size | Ø160 mm |
| Stroke | 30 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 SAI160BX30S 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 SAI160BX30S 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 SI160BX30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×30 | 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 SI160BX30S Is Used
Heavy Press Clamping
Applies the 10053 N push force at 0.5 MPa to secure heavy metal components during machining or stamping operations.
Pallet Stopper Gate
Functions as a robust 30 mm stroke actuator to halt loaded pallets on conveyors, utilising the SUS304 rod for plant durability.
Vertical Load Lowering
Manages the controlled descent of approximately 512 kg payloads using adjustable air cushions, requiring a pilot check valve for safety.
Replacing the Airtac SI160 Standard Cylinder SI160BX30S with the SAI160BX30S
To replace the SI160BX30S, order the SAI160BX30S and verify the ISO 15552 mounting interface, 160 mm bore, 30 mm stroke, G3/4 port, and your specific mounting accessory. The -B denotes a SUS304 stainless rod for corrosion resistance, and -S confirms the piston magnet for switches. Sizing both ways: this bore yields 10053 N push at 0.5 MPa (14074 N at 0.7 MPa), while a neighbouring 200 mm bore provides 15708 N at 0.5 MPa. Remember, a plain cylinder drifts without live air; the 50 mm cushion only decelerates. For load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX30S
- ✓ 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 SI160BX30S FAQ
Yes, the SI160BX30S is discontinued. The direct replacement is the SAI160BX30S. It shares the identical ISO 15552 mounting interface, 160 mm bore, 30 mm stroke, G3/4 port, and output force, fitting directly into existing fixtures.
It features a G3/4 air port. The 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX30S replacement — usually within 7-8 hours.