This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX50, 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 SI160BX50
The AirTAC Airtac SI160 Standard Cylinder SI160BX50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX50
- 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 SI160BX50
The AirTAC SI160BX50 is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 50mm stroke, delivering 10053N push force at 0.5MPa. The direct replacement is the SAI160BX50, which maintains the exact same ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread. This SKU features a SUS304 stainless steel rod (-B) for corrosion resistance but lacks a magnet, so it cannot accept position sensors.
Upgrading to the SAI160BX50 introduces an improved piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For high-temperature environments up to 150C, specify the Viton H seal option.
Airtac SI160 Standard Cylinder SI160BX50 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX50 |
| Bore size | Ø160 mm |
| Stroke | 50 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 SAI160BX50 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 SAI160BX50 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 SI160BX50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×50 | 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 SI160BX50 Is Used
Heavy Stamping
Generates 14074N at 0.7MPa to drive heavy-duty stamping and forming presses with reliable clamping force.
Press Tonnage
Provides up to 2050kgf at 1.0MPa for high-tonnage pressing applications requiring a robust 160mm bore.
Replacing the Airtac SI160 Standard Cylinder SI160BX50 with the SAI160BX50
To replace the discontinued SI160BX50, order the SAI160BX50, confirming the ISO 15552 mounting interface, 50mm stroke, and G3/4 port. Because this SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, select an SAI model with the S suffix. If downsizing, a 125mm bore yields 6136N at 0.5MPa; if upsizing, a 200mm bore provides 15708N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX50
- ✓ 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 SI160BX50 FAQ
Yes, the SI160BX50 is discontinued. The direct replacement is the SAI160BX50, which is dimensionally interchangeable per ISO 15552 with the same bore, stroke, force, and G3/4 port.
It features a G3/4 port and delivers 10053N push / 9425N pull at 0.5MPa, 14074N push at 0.7MPa, and a theoretical max of 2050kgf at 1.0MPa. Speed is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX50 replacement — usually within 7-8 hours.