This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X350S, 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 SID Series Double-Rod Cylinder SID160X350S
The AirTAC Airtac SID Series Double-Rod Cylinder SID160X350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID160X350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID160X350S
- 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 SID Series Double-Rod Cylinder SID160X350S
The AirTAC SID160X350S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. It features a 160mm bore, 40mm rod, M36x2 thread, 50mm adjustable cushions, G3/4 port, and 30-500 mm/s speed. The direct replacement is the SAID160X350S, sharing the same interface, force, and mounting.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The double-rod design prevents rotation and lets the back rod carry a sensor cam. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate; use an external rod lock or SAIL/BSAI variant for load holding.
Airtac SID Series Double-Rod Cylinder SID160X350S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID160X350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X350S |
| Bore size | Ø160 mm |
| Stroke | 350 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 SAID160X350S 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 SAID160X350S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID160X350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×350 | 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 SID Series Double-Rod Cylinder SID160X350S Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously from one piston, utilizing the equal both-ways force to maintain perfectly synchronized cutting cycles.
Anti-Rotation Transfer Unit
Moves parts along a 350mm stroke transfer line where the second rod prevents rotational drift, ensuring precise placement without external guides.
Symmetrical Clamping Fixture
Clamps heavy workpieces from both sides using the dual rods, delivering 9425 N of equal holding force at 0.5 MPa while the back rod actuates a sensor cam.
Replacing the Airtac SID Series Double-Rod Cylinder SID160X350S with the SAID160X350S
To replace the discontinued SID160X350S, install the direct replacement SAID160X350S, reusing the exact ISO 15552 mounting (Basic, FA, LB, TC) and G3/4 port. Because force is equal both ways, size it by checking neighbouring bores: the 125mm bore yields 5734 N @0.5 MPa, while the 200mm bore yields 15080 N @0.5 MPa. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously. The -S magnet supports legacy CS1-B/DS1-B sensors. For the 350mm stroke, add external guides to prevent rod bending under side loads. Avoid using this cylinder for load holding without live air, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID160X350S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID160X350S FAQ
Yes, the SID160X350S is discontinued. The direct replacement is the SAID160X350S, which shares the same ISO 15552 interface, 160mm bore, 350mm stroke, G3/4 port, and mounting hardware. The SAI family also adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
As a double-rod cylinder, force is equal both ways: 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. The air port is G3/4, the rod is Ø40mm with an M36x2 thread, and adjustable cushions are 50mm at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID160X350S
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