This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X250H, 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 SI160X250H
The AirTAC SI160 Standard Cylinder SI160X250H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X250H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X250H
- 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 SI160X250H
The AirTAC SI160X250H is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 250 mm stroke. Built for high-temperature duty, it features a Viton H seal (0 to 150 C) and delivers 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160X250H, a direct replacement sharing the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note that this specific SKU lacks a magnet (-S) and therefore cannot accept position sensors like the legacy CS1-B/DS1-B switches.
Airtac SI160 Standard Cylinder SI160X250H Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X250H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X250H |
| Bore size | Ø160 mm |
| Stroke | 250 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 SAI160X250H 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 SAI160X250H 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 SI160X250H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×250 | 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 SI160X250H Is Used
Heavy Stamp Presses
Drives large heavy-duty stamping and forming presses where the 10053 N push force at 0.5 MPa and robust 40 mm rod handle substantial metalworking resistance.
High-Temp Ejectors
Ejects cast or molded parts from hot environments up to 150 C, leveraging the Viton H high-temperature seals to maintain integrity without degrading.
Replacing the Airtac SI160 Standard Cylinder SI160X250H with the SAI160X250H
To replace the SI160X250H, order the SAI160X250H. Verify your ISO 15552 mounting fixtures (LB, FA, TC, etc.), the G3/4 port connection, and the M36x2 rod thread. Because this SKU lacks a magnet, it cannot support sensors; if position detection is needed, select an SAI equivalent with the S suffix. For sizing, the 160 mm bore yields 10053 N push at 0.5 MPa; dropping to a 125 mm bore reduces push to 6136 N, while increasing to 200 mm raises it to 15708 N. A plain cylinder drifts on air loss—the 50 mm cushions only decelerate near stroke end—so for load holding, specify an external pilot check valve, rod lock, or the SAIL/BSAI lock variants. The Viton H seal allows 0-150 C operation.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X250H
- ✓ 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 SI160X250H FAQ
Yes, the AirTAC SI160X250H is discontinued. The direct replacement is the SAI160X250H. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 250 mm stroke, G3/4 port, and mounting interface, but features an upgraded two Y-shaped one-way piston seal for longer life.
This 160 mm bore cylinder features a G3/4 air port and a 40 mm piston rod. 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. It operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X250H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X250H replacement — usually within 7-8 hours.