This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X250, 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 SID160X250
The AirTAC SID Series Double-Rod Cylinder SID160X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID160X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID160X250
- 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 SID160X250
The AirTAC SID160X250 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. The bore is 160 mm, stroke 250 mm, rod is Ø40 mm with an M36x2 thread, a G3/4 port, and 50 mm adjustable air cushions. This SID model is discontinued; the direct replacement is the SAID160X250, matching the interface, bore, stroke, force, port, and mounting.
The SAID upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU has no -S magnet and cannot take a sensor. The air cushion only decelerates near stroke end; it does not hold loads on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID160X250 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID160X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X250 |
| Bore size | Ø160 mm |
| Stroke | 250 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 SAID160X250 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 SAID160X250 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 SID160X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×250 | 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 SID160X250 Is Used
Twin-Tool Drive Station
Drives opposing tools simultaneously from both rod ends, ensuring perfectly synchronized machining operations with equal push and pull force.
Anti-Rotation Transfer Unit
Uses the dual-rod architecture to prevent mechanical rotation during heavy workpiece transfer, maintaining strict alignment without external guides.
Symmetric Clamping Fixture
Applies equal clamping pressure from both directions to hold large components securely, leveraging the 9425 N @0.5 MPa equal both-ways force.
Replacing the Airtac SID Series Double-Rod Cylinder SID160X250 with the SAID160X250
Replace the discontinued SID160X250 directly with the SAID160X250, reusing your existing ISO 15552 FA, LB, or TC mounts. Size both ways by checking equal force across neighbor bores: the 125 mm bore yields 5734 N @0.5 MPa, while the 200 mm bore yields 15080 N @0.5 MPa. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously. Because this SKU lacks the -S magnet, it cannot support sensing. For this 250 mm stroke, verify side-load limits. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID160X250
- ✓ 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 SID160X250 FAQ
Yes, the SID160X250 is discontinued. The direct replacement is the SAID160X250, which matches the ISO 15552 interface, 160 mm bore, 250 mm stroke, G3/4 port, and mounting hardware.
Force is equal in both directions: 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. The air port is G3/4.
Related AirTAC SAI Cylinders
Request a Quote for the SAID160X250
Send us the quantity and destination. We confirm price, stock and lead time on the SAID160X250 replacement — usually within 7-8 hours.