This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX20, 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 SI160BX20
The AirTAC Airtac SI160 Standard Cylinder SI160BX20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX20
- 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 SI160BX20
The AirTAC SI160BX20 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 20 mm stroke, delivering a push force of 10053 N at 0.5 MPa. The direct replacement is the SAI160BX20, which shares the same interface, bore, force, G3/4 port, and mounting fixtures. This unit features a SUS304 stainless steel rod (the -B option) and lacks a magnet, meaning it cannot accept position sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note that a plain cylinder drifts without live air; for load holding, consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI160 Standard Cylinder SI160BX20 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX20 |
| Bore size | Ø160 mm |
| Stroke | 20 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 SAI160BX20 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 SAI160BX20 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 SI160BX20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×20 | 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 SI160BX20 Is Used
Heavy Press Operations
Ideal for high-tonnage pressing and forming tasks requiring a compact 20 mm stroke, utilizing the 10053 N push force at 0.5 MPa.
Industrial Clamp Systems
Provides robust clamping action for large fixtures, with the SUS304 stainless rod offering corrosion resistance in harsh environments.
Short-Stroke Plunging
Executes brief, powerful linear plunging motions where a massive 160 mm bore is needed to generate immediate high-thrust impact.
Replacing the Airtac SI160 Standard Cylinder SI160BX20 with the SAI160BX20
To replace the discontinued SI160BX20, order the SAI160BX20, confirming the ISO 15552 mounting interface, 160 mm bore, 20 mm stroke, and G3/4 port. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magneted version if sensing is required. When sizing, the 140 mm neighbour bore offers less force, while the 200 mm bore yields 15708 N at 0.5 MPa. Remember that the air cushion only decelerates; it does not hold the load. If you need positive holding on air loss, select the SAIL air-released lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX20
- ✓ 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 SI160BX20 FAQ
Yes, the SI160BX20 is discontinued. The direct replacement is the SAI160BX20, a true ISO 15552 profile cylinder that matches the 160 mm bore, 20 mm stroke, 10053 N force, and G3/4 port for a seamless fixture swap.
This double-acting cylinder features a G3/4 air port and an M36x2 rod thread. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa, 14074 N at 0.7 MPa, 18095 N at 0.9 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX20
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX20 replacement — usually within 7-8 hours.