This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X40S, 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 SID160X40S
The AirTAC Airtac SID Series Double-Rod Cylinder SID160X40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID160X40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID160X40S
- 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 SID160X40S
The AirTAC SID160X40S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Both faces use the rod-side area, so push and pull force are equal at 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. This model is discontinued; the direct replacement is the SAID160X40S. It shares the same G3/4 port, M36x2 rod thread, 50 mm cushion, and ISO 15552 mounting interface. The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Because the second rod can carry a sensor cam or drive two tools while resisting rotation, the double-rod design adds mechanical stability. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end. For held loads, use an external rod lock or the SAIL/BSAI lock variant.
Airtac SID Series Double-Rod Cylinder SID160X40S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID160X40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X40S |
| Bore size | Ø160 mm |
| Stroke | 40 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 SAID160X40S 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 SAID160X40S 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 SID160X40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×40 | 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 SID160X40S Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously from a single piston, utilizing the equal both-ways force to ensure perfectly balanced cutting pressure on both ends.
Anti-Rotation Transfer Unit
Moves a heavy workpiece along a conveyor without rotational drift, using the rigid double-rod geometry to maintain precise alignment during high-speed transfers.
Symmetric Gauging Fixture
Positions a part for inspection where the rear rod acts as a stable sensor cam target, allowing external measurement probes to track exact position without mounting brackets.
Replacing the Airtac SID Series Double-Rod Cylinder SID160X40S with the SAID160X40S
To replace the discontinued SID160X40S, install the SAID160X40S directly—bore, stroke, G3/4 port, and ISO 15552 mounting dimensions match exactly. Size both ways using the equal-both-ways force: if 9425 N @0.5 MPa is insufficient, step up to the 200 mm bore, or drop to 125 mm if lower force is acceptable. Choose a double-rod cylinder when you need anti-rotation stability or a back rod to carry a sensor cam. Mounting options include Basic, FA, LB, and TC. The -S magnet supports legacy CS1-B/DS1-B switches. For this 40 mm stroke, side-load concerns are minimal, but for any stroke >=300 mm, verify guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID160X40S
- ✓ 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 SID160X40S FAQ
Yes, the AirTAC SID160X40S is discontinued. The direct replacement is the SAID160X40S. It shares the same ISO 15552 interface, 160 mm bore, 40 mm stroke, G3/4 port, and mounting options, while adding an upgraded piston seal.
Force is equal both ways: 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. The speed range is 30-500 mm/s. It features a 40 mm rod, M36x2 thread, and 50 mm adjustable cushions at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID160X40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID160X40S replacement — usually within 7-8 hours.