This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X250SH, 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 SI160X250SH
The AirTAC SI160 Standard Cylinder SI160X250SH 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 SAI160X250SH, 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 → SAI160X250SH
- 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 SI160X250SH
The AirTAC SI160X250SH is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 250 mm stroke. Delivering 10053 N push force at 0.5 MPa through a G3/4 port, it is replaced by the SAI160X250SH. This direct successor shares the exact ISO 15552 mounting interface, M36x2 thread, and 50 mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This -SH variant includes a piston magnet for CS1-B/DS1-B switches and a Viton H seal rated for 0-150 C. The SAI family adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI160 Standard Cylinder SI160X250SH Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X250SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X250SH |
| 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 SAI160X250SH 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 SAI160X250SH 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 SI160X250SH
| 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 SI160X250SH Is Used
Heavy Press Clamping
Generates 14074 N at 0.7 MPa to secure large metal castings during machining operations.
High-Temperature Forming
The Viton H seal withstands 0-150 C heat near ovens while actuating heavy industrial doors.
Replacing the Airtac SI160 Standard Cylinder SI160X250SH with the SAI160X250SH
To replace the SI160X250SH, order the SAI160X250SH. Confirm the ISO 15552 mounting fixture, 250 mm stroke, G3/4 port, and M36x2 rod thread. The -S magnet enables CS1-B/DS1-B sensors, while the -H Viton seal handles 0-150 C environments. If you need less force, the 125 mm bore offers 6136 N push at 0.5 MPa; for more power, the 200 mm bore provides 15708 N. A plain cylinder drifts on air loss, so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. For this 250 mm stroke, use a guide to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X250SH
- ✓ 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 SI160X250SH FAQ
Yes, the SI160X250SH is discontinued. The direct replacement is the SAI160X250SH. It shares the same ISO 15552 mounting interface, 160 mm bore, 250 mm stroke, output force, G3/4 port, and M36x2 thread, fitting existing fixtures perfectly.
It features a G3/4 port. The force 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 SAI160X250SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X250SH replacement — usually within 7-8 hours.