This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX950S, 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 SI160BX950S
The AirTAC SI160 Standard Cylinder SI160BX950S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 950mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX950S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke950 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX950S
- 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 SI160BX950S
The AirTAC SI160BX950S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 950 mm stroke, and a SUS304 stainless piston rod. Delivering 10053 N push force at 0.5 MPa, it is replaced by the SAI160BX950S. This direct successor shares the exact ISO 15552 mounting interface, G3/4 port, and output force, fitting existing fixtures seamlessly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Because this is a long 950 mm stroke, external guides are recommended to prevent rod bending. Note that a plain cylinder drifts without air; for load holding, use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI160 Standard Cylinder SI160BX950S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX950S |
| Bore size | Ø160 mm |
| Stroke | 950 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 SAI160BX950S 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 SAI160BX950S 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 SI160BX950S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×950 | 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 SI160BX950S Is Used
Heavy Machinery Forming
Drives large platens in metal forming and stamping presses where the 10053 N push force at 0.5 MPa handles substantial industrial resistance.
Large Assembly Actuation
Shifts heavy tooling or fixtures along the 950 mm stroke, relying on external guides to prevent rod bending during extended reach operations.
Replacing the Airtac SI160 Standard Cylinder SI160BX950S with the SAI160BX950S
To replace the discontinued SI160BX950S, order the SAI160BX950S, verifying the ISO 15552 mounting interface, 160 mm bore, 950 mm stroke, G3/4 port, and the -S magnet for CS1-B/DS1-B sensors. For sizing alternatives, a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push at 0.5 MPa. The 950 mm stroke demands external guides to mitigate side-load and rod-bending risks. Remember that air cushions only decelerate; they do not hold loads. If load holding is required on air loss, select the SAIL or BSAI lock variant, or install a pilot check valve. The -B rod option provides SUS304 stainless steel for corrosion resistance.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX950S
- ✓ 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 SI160BX950S FAQ
Yes, the SI160BX950S is discontinued. The direct replacement is the SAI160BX950S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 950 mm stroke, G3/4 port, and mounting interface.
This double-acting cylinder features a G3/4 port and an M36x2 rod thread. Theoretical forces 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 maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX950S replacement — usually within 7-8 hours.