This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX185S, 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 SI160AX185S
The AirTAC SI160 Standard Cylinder SI160AX185S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 185mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX185S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX185S
- 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 SI160AX185S
The AirTAC SI160AX185S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 185 mm stroke. It delivers 10053 N push and 9425 N pull at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160AX185S, sharing the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This specific -A variant uses a SUS420J2 stainless rod for corrosion resistance, and the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160AX185S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX185S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX185S |
| Bore size | Ø160 mm |
| Stroke | 185 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 SAI160AX185S 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 SAI160AX185S 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 SI160AX185S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×185 | 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 SI160AX185S Is Used
Heavy Stamp Press Feed
Drives robust 512 kg vertical lift tooling in automated metal forming lines, utilizing the 10053 N push force at 0.5 MPa.
Large Mold Clamping
Secures heavy industrial molds on machining centers with high pull force, relying on the rigid 40 mm piston rod.
Pallet Lift Gates
Actuates heavy-duty logistic lift gates and diverters, where the SUS420J2 stainless rod resists harsh humidity.
Replacing the Airtac SI160 Standard Cylinder SI160AX185S with the SAI160AX185S
To replace this SI160AX185S, order the SAI160AX185S. Confirm the ISO 15552 mounting interface, 185 mm stroke, G3/4 port, and your specific mounting accessory (LB, FA, CA, TC). The -A code means SUS420J2 stainless rod, and -S means the piston magnet is present for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Since stroke is under 300 mm, rod-bending side loads are minimal, but always guide the load. If downsizing, a 125 mm bore gives 6136 N push; if upsizing, 200 mm gives 15708 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX185S
- ✓ 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 SI160AX185S FAQ
Yes, the AirTAC SI160AX185S is discontinued. The direct replacement is the SAI160AX185S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 185 mm stroke, 10053 N force, G3/4 port, and mounting interface. You simply order the SAI equivalent.
This double-acting cylinder uses a G3/4 air 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 SAI160AX185S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX185S replacement — usually within 7-8 hours.