This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX40S, 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 SI160BX40S
The AirTAC Airtac SI160 Standard Cylinder SI160BX40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX40S
- 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 SI160BX40S
The AirTAC SI160BX40S is a discontinued double-acting ISO 15552 profile cylinder with a 40 mm stroke and a SUS304 stainless steel piston rod. Built for heavy-duty tasks, it delivers 10053 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI160BX40S, a direct upgrade retaining the exact G3/4 port, M36x2 thread, and ISO 15552 mounting interface.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. Note that a standard cylinder drifts without live air; for load holding, specify the SAIL or BSAI lock variants.
Airtac SI160 Standard Cylinder SI160BX40S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX40S |
| Bore size | Ø160 mm |
| Stroke | 40 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 SAI160BX40S 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 SAI160BX40S 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 SI160BX40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×40 | 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 SI160BX40S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring high thrust, utilizing the 10053 N push force at 0.5 MPa and robust 40 mm SUS304 rod.
Industrial Clamp
Secures large fabricated steel components during welding or machining, taking advantage of the 9425 N pull force and short 40 mm stroke.
Wood Processing
Actuates massive cutting heads or log positioning gates in sawmills where the stainless rod resists humid, debris-filled environments.
Replacing the Airtac SI160 Standard Cylinder SI160BX40S with the SAI160BX40S
To replace the SI160BX40S, order the SAI160BX40S. Confirm the ISO 15552 mounting interface, the 160 mm bore, 40 mm stroke, G3/4 port, and the -S magnet for CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). Because this is the -B variant, ensure you keep the SUS304 stainless rod for corrosion resistance. When sizing, neighbouring bores offer different capacities: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. This cylinder operates at 30-500 mm/s. Remember that a plain SAI does not hold load on air loss—the cushions only decelerate. For secure holding, use an external pilot check valve or explore the SAIL air-released lock or BSAI clamp-lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX40S
- ✓ 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 SI160BX40S FAQ
Yes, the SI160BX40S is discontinued. The direct replacement is the SAI160BX40S. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 40 mm stroke, G3/4 port, and mounting fixtures.
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, with a 50 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX40S
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