This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX290S, 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 SI160BX290S
The AirTAC SI160 Standard Cylinder SI160BX290S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 290mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX290S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke290 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX290S
- 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 SI160BX290S
The AirTAC SI160BX290S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 290 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160BX290S, matching the interface, stroke, force, and mounting. This unit features a SUS304 stainless steel rod and a piston magnet for legacy CS1-B/DS1-B sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. A plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SI160 Standard Cylinder SI160BX290S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX290S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX290S |
| Bore size | Ø160 mm |
| Stroke | 290 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 SAI160BX290S 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 SAI160BX290S 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 SI160BX290S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×290 | 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 SI160BX290S Is Used
Heavy Press Clamping
Generates 14074 N at 0.7 MPa to secure large metal castings during machining operations.
Stamping Press Feed
Moves heavy blanks through a 290 mm stroke with adjustable 50 mm cushions at both ends.
Replacing the Airtac SI160 Standard Cylinder SI160BX290S with the SAI160BX290S
To replace the SI160BX290S, order the SAI160BX290S. Verify the ISO 15552 mounting interface, 160 mm bore, 290 mm stroke, G3/4 port, and M36x2 thread. The -B suffix means a SUS304 stainless rod, and -S confirms the magnet for CS1-B/DS1-B sensors. Sizing both ways: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. If you need to hold a load vertically without live air, the cushion will not lock it; use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. For this 290 mm stroke, ensure guide rails to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX290S
- ✓ 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 SI160BX290S FAQ
Yes, the SI160BX290S is discontinued. The direct replacement is the SAI160BX290S. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 290 mm stroke, G3/4 port, and mounting hardware.
At 0.5 MPa it pushes 10053 N and pulls 9425 N. At 0.7 MPa it pushes 14074 N, and the theoretical max is 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX290S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX290S replacement — usually within 7-8 hours.