This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X370S, 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 SI160X370S
The AirTAC SI160 Standard Cylinder SI160X370S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 370mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X370S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke370 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X370S
- 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 SI160X370S
The AirTAC SI160X370S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 370 mm stroke, delivering 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160X370S, a direct upgrade sharing the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions.
The SAI successor features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL and BSAI lock variants absent in the SI line, while this -S model retains CS1-B/DS1-B sensor compatibility.
Airtac SI160 Standard Cylinder SI160X370S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X370S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X370S |
| Bore size | Ø160 mm |
| Stroke | 370 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 SAI160X370S 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 SAI160X370S 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 SI160X370S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×370 | 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 SI160X370S Is Used
Heavy Press Clamping
Generates up to 14074 N at 0.7 MPa to secure large steel fabrications during machining or welding operations.
Stamping & Forming
Provides the high thrust necessary for metal forming presses, utilizing the 50 mm adjustable cushions to absorb impact.
Pallet Lift Gates
Actuates heavy industrial loading dock gates, moving substantial mass over the 370 mm travel distance safely.
Replacing the Airtac SI160 Standard Cylinder SI160X370S with the SAI160X370S
To replace the SI160X370S, order the SAI160X370S and verify your ISO 15552 mounting fixture, 370 mm stroke requirement, G3/4 port, and piston magnet. If you need less force, a 125 mm bore yields 6136 N at 0.5 MPa; for heavier loads, a 200 mm bore provides 15708 N. Because this is a 370 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts without live air—the cushion only decelerates—so for load holding consider an external pilot check valve or the SAIL/BSAI lock variants. The SAI family also offers SAIF valve-integrated bores (32-100) if you downsize.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X370S
- ✓ 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 SI160X370S FAQ
Yes, the SI160X370S is discontinued. The direct replacement is the SAI160X370S. It is dimensionally interchangeable per ISO 15552, retaining the same bore, stroke, G3/4 port, and mounting interface.
The G3/4 port supplies a 40 mm rod. Forces are: 10053 N push / 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X370S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X370S replacement — usually within 7-8 hours.