This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1250, 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 SI160X1250
The AirTAC SI160 Standard Cylinder SI160X1250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1250
- 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 SI160X1250
The AirTAC SI160X1250 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 1250 mm stroke. It delivers a push force of 10053 N at 0.5 MPa using a G3/4 air port. AirTAC replaced this legacy unit with the SAI160X1250, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet and cannot accept a sensor. For elevated thermal needs, a Viton H seal option raises the operating range to 0-150 C.
Airtac SI160 Standard Cylinder SI160X1250 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1250 |
| Bore size | Ø160 mm |
| Stroke | 1250 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 SAI160X1250 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 SAI160X1250 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 SI160X1250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1250 | 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 SI160X1250 Is Used
Heavy Machinery Ejection
Provides the robust 10053 N push force needed to eject large finished castings or heavy molds from hydraulic presses over a 1250 mm travel distance.
Bulk Material Diversion
Actuates heavy-duty diverter arms on aggregate or steel processing lines, utilizing the 50 mm adjustable air cushions to decelerate the massive rod assembly.
Replacing the Airtac SI160 Standard Cylinder SI160X1250 with the SAI160X1250
To replace the SI160X1250, order the SAI160X1250. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the 1250 mm stroke, and the G3/4 port. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B switches; if sensing is needed, select an SAI model with the S magnet option. Sizing context: at 0.5 MPa this bore pushes 10053 N and pulls 9425 N; a neighboring 200 mm bore yields 15708 N push, while a 125 mm bore yields 6136 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Finally, at 1250 mm, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1250
- ✓ 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 SI160X1250 FAQ
Yes, the SI160X1250 is discontinued. The direct replacement is the SAI160X1250. It shares the identical ISO 15552 mounting interface, 160 mm bore, 1250 mm stroke, output force, and G3/4 port, fitting directly into your existing fixtures without modification.
This double-acting cylinder uses a G3/4 air port and features a 40 mm piston rod with an M36x2 thread. The thrust ratings 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 theoretical maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X1250
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1250 replacement — usually within 7-8 hours.