This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX275, 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 SI160BX275
The AirTAC SI160 Standard Cylinder SI160BX275 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX275, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke275 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX275
- 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 SI160BX275
The AirTAC SI160BX275 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 275 mm stroke. Built with an extruded aluminum barrel, it delivers 10053 N push force at 0.5 MPa and utilizes a G3/4 air port with a 50 mm adjustable cushion at each end. The direct replacement is the SAI160BX275, matching the exact ISO 15552 mounting interface, bore, stroke, and port size.
This SAI upgrade introduces an improved piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life. For this specific SKU, the -B designation indicates a SUS304 stainless steel piston rod for corrosion resistance, and because it lacks the -S suffix, it cannot accept a magnetic sensor.
Airtac SI160 Standard Cylinder SI160BX275 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX275 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX275 |
| Bore size | Ø160 mm |
| Stroke | 275 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 SAI160BX275 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 SAI160BX275 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 SI160BX275
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×275 | 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 SI160BX275 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming dies requiring high thrust, utilizing the 10053 N push force at 0.5 MPa.
Pallet Handling
Indexes heavy loaded pallets on conveyor lines, relying on the robust 160 mm bore and SUS304 stainless rod for durability.
Large Clamp Actuation
Actuates massive clamping fixtures in fabrication cells, safely moving loads up to the computed 512 kg vertical lift limit.
Replacing the Airtac SI160 Standard Cylinder SI160BX275 with the SAI160BX275
To replace the discontinued SI160BX275, order the SAI160BX275, ensuring a direct fit per the ISO 15552 mounting interface dimensions. Confirm the G3/4 port, M36x2 rod thread, and 275 mm stroke. This -B variant provides a SUS304 stainless rod; if your application requires position sensing, note this SKU lacks a magnet and cannot take a switch, so you must select an -S magnet option. Sizing context: if more force is needed, the 200 mm bore offers 15708 N push at 0.5 MPa; if less is acceptable, the 125 mm bore provides 6136 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for load holding consider the SAIL or BSAI lock variants, or an external pilot check valve. At 275 mm stroke, minimize side-load and rod-bending stress by using guide rails to support the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX275
- ✓ 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 SI160BX275 FAQ
Yes, the SI160BX275 is discontinued. The direct replacement is the SAI160BX275. It matches the ISO 15552 mounting interface, 160 mm bore, 275 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/4 air port. Force output is 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 maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX275
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX275 replacement — usually within 7-8 hours.