This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X55, 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 SI160X55
The AirTAC Airtac SI160 Standard Cylinder SI160X55 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 55mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X55, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke55 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X55
- 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 SI160X55
The AirTAC SI160X55 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 55 mm stroke, delivering 10053 N of push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160X55, a direct upgrade sharing the exact same mounting interface, output, and dimensions.
The SAI replacement features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet, so it cannot accept a CS1-B or DS1-B sensor.
Airtac SI160 Standard Cylinder SI160X55 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X55 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X55 |
| Bore size | Ø160 mm |
| Stroke | 55 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 SAI160X55 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 SAI160X55 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 SI160X55
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×55 | 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 SI160X55 Is Used
Heavy Press Clamping
Generates up to 18095 N at 0.9 MPa to secure large steel fabrications during machining or welding operations.
Injection Mould Bumping
Provides the robust 10053 N push force required to break free and eject large industrial mould components.
Replacing the Airtac SI160 Standard Cylinder SI160X55 with the SAI160X55
To replace this discontinued SI160X55, order the SAI160X55 and confirm your ISO 15552 mounting interface, bore, stroke, port (PT/G/NPT), and accessory type match. Because this non-magnetic SKU cannot take a sensor, order a -S magnet version if position detection is needed. Sizing both ways: the 125 mm bore neighbor offers 6136 N push at 0.5 MPa, while the 200 mm bore provides 15708 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option (bores 32-100) which this SI lacked.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X55
- ✓ 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 SI160X55 FAQ
Yes, the SI160X55 is discontinued. The direct replacement is the AirTAC SAI160X55. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 55 mm stroke, force, G3/4 port, and mounting accessories.
This double-acting cylinder uses a G3/4 port. It delivers 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. The speed range is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X55
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X55 replacement — usually within 7-8 hours.