This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X25SH, 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 SI160X25SH
The AirTAC SI160 Standard Cylinder SI160X25SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 25mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X25SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X25SH
- 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 SI160X25SH
The AirTAC SI160X25SH is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 25 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and a 50 mm adjustable air cushion. The direct replacement is the SAI160X25SH, sharing the exact ISO 15552 mounting interface, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL and BSAI lock variants absent in the SI line. With the -S magnet, this legacy unit uses CS1-B/DS1-B switches, while the SAI takes current AirTAC sensors. The -H Viton seal allows 0-150 C operation.
Airtac SI160 Standard Cylinder SI160X25SH Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X25SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X25SH |
| Bore size | Ø160 mm |
| Stroke | 25 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 SAI160X25SH 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 SAI160X25SH 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 SI160X25SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×25 | 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 SI160X25SH Is Used
Heavy Press Clamping
Ideal for high-force short-stroke clamping in automotive stamping cells, using the 10053 N thrust to secure heavy dies.
Injection Molding Ejector
Provides robust ejection force for large molded parts, with the Viton H seal handling elevated ambient shop temperatures.
Stamping Press Brake
Acts as a heavy-duty actuator for press brakes, where the 50 mm cushion absorbs significant kinetic energy at stroke end.
Replacing the Airtac SI160 Standard Cylinder SI160X25SH with the SAI160X25SH
To replace the SI160X25SH, order the SAI160X25SH, confirming the ISO 15552 mounting interface, 160 mm bore, 25 mm stroke, G3/4 port (PT/G/NPT), and mounting accessory. The -S magnet and -H Viton high-temp seal must be specified. For sizing both ways: dropping to a 125 mm bore yields 6136 N push @0.5 MPa, while stepping up to 200 mm provides 15708 N. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. Because the 25 mm stroke is very short for this bore, ensure guide alignment to prevent rod-bending side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X25SH
- ✓ 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 SI160X25SH FAQ
Yes, the AirTAC SI160X25SH is discontinued. The direct replacement is the SAI160X25SH. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 25 mm stroke, 10053 N force, and G3/4 port, so it fits existing fixtures.
The bore is 160 mm with a G3/4 port. At 0.5 MPa it provides 10053 N push and 9425 N pull force. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X25SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X25SH replacement — usually within 7-8 hours.