This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX225, 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 SI160AX225
The AirTAC SI160 Standard Cylinder SI160AX225 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 225mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX225, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX225
- 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 SI160AX225
The AirTAC SI160AX225 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 225 mm stroke, delivering 10053 N push force at 0.5 MPa through its G3/4 port. The direct replacement is the SAI160AX225, matching the exact bore, stroke, force, port and ISO 15552 mounting interface for existing fixtures. This specific SKU features the SUS420J2 stainless steel piston rod (-A) for corrosion resistance. Because it lacks the -S magnet suffix, it cannot accept legacy CS1-B/DS1-B sensors.
The SAI160AX225 upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life, while retaining the 50 mm adjustable air cushions. Note that a plain cylinder drifts without live air; for held loads, explore the SAIL or BSAI lock variants, or use an external pilot check valve.
Airtac SI160 Standard Cylinder SI160AX225 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX225 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX225 |
| Bore size | Ø160 mm |
| Stroke | 225 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 SAI160AX225 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 SAI160AX225 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 SI160AX225
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×225 | 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 SI160AX225 Is Used
Heavy Stamp Press Feed
Drives robust 512 kg vertical lift tooling in automotive stamping lines, utilizing the 10053 N push force at 0.5 MPa with reliable deceleration.
Injection Mold Ejection
Ejects dense plastic components from large injection molds, leveraging the SUS420J2 stainless rod to resist cooling fluid corrosion.
Pallet Stopper Gate
Acts as a high-force stopper gate for heavy loaded pallets on conveyor systems, safely absorbing kinetic energy via the 50 mm cushions.
Replacing the Airtac SI160 Standard Cylinder SI160AX225 with the SAI160AX225
To replace the discontinued SI160AX225, order the SAI160AX225. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the 225 mm stroke, and the G3/4 port. This unit uses an SUS420J2 stainless rod (-A); confirm if your application requires this over standard carbon steel. Since this SKU lacks the -S magnet, it cannot support position sensing; if sensing is needed, select an SAI model with the S suffix for current AirTAC switches. For sizing alternatives, a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push at 0.5 MPa. Because the stroke is 225 mm, ensure adequate guide support to prevent rod bending under side loads. The cylinder operates at 30-500 mm/s. Remember, the air cushion only decelerates the load; it does not hold it. For static holding on air loss, use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX225
- ✓ 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 SI160AX225 FAQ
Yes, the SI160AX225 is discontinued. The direct replacement is the SAI160AX225. It features the same ISO 15552 mounting interface, 160 mm bore, 225 mm stroke, output force, G3/4 port, and SUS420J2 stainless rod, fitting directly into existing fixtures.
This double-acting cylinder uses a G3/4 port. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa the push force 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 SAI160AX225
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX225 replacement — usually within 7-8 hours.