This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X650S, 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 SI160X650S
The AirTAC SI160 Standard Cylinder SI160X650S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 650mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X650S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X650S
- 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 SI160X650S
The AirTAC SI160X650S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 650 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI160X650S, matching the interface, bore, stroke, force, and mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also adds SAIL and BSAI lock variants the SI lacked. The -S suffix means a piston magnet for CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X650S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X650S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X650S |
| Bore size | Ø160 mm |
| Stroke | 650 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 SAI160X650S 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 SAI160X650S 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 SI160X650S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×650 | 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 SI160X650S Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 14074 N of thrust at 0.7 MPa, utilizing the 50 mm adjustable cushions to absorb heavy kinetic energy.
Automated Assembly Platens
Actuates massive tooling platens over 650 mm strokes where the G3/4 port and 40 mm rod maintain rigidity under high pneumatic pressure.
Replacing the Airtac SI160 Standard Cylinder SI160X650S with the SAI160X650S
To replace this SI160X650S, order the SAI160X650S. Verify the ISO 15552 mounting interface, 650 mm stroke, M36x2 rod thread, G3/4 port, and the -S magnet for CS1-B/DS1-B switches. For sizing, the 125 mm bore neighbor yields 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. Note that a plain cylinder drifts on air loss; the 50 mm cushions only decelerate. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Because the 650 mm stroke is long, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X650S
- ✓ 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 SI160X650S FAQ
Yes, the AirTAC SI160X650S is discontinued. The direct replacement is the SAI160X650S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the exact 160 mm bore, 650 mm stroke, output force, G3/4 port, and mounting accessories.
This double-acting cylinder uses a G3/4 air port. It generates 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X650S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X650S replacement — usually within 7-8 hours.