This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X400, 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 SID160X400
The AirTAC Airtac SID Series Double-Rod Cylinder SID160X400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID160X400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID160X400
- 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 SID160X400
The AirTAC SID160X400 is a discontinued ISO 15552 double-acting double-rod cylinder featuring a 160mm bore and 400mm stroke. A Ø40mm rod exits both ends, ensuring push and pull force is equal both ways at 9425N @0.5MPa, 13194N @0.7MPa, and 16964N @0.9MPa. The bore dictates a G3/4 port, M36x2 rod thread, and 50mm adjustable cushions. The direct replacement is the SAID160X400, which reuses the same ISO 15552 mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure.
Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. Note that air cushions only decelerate near stroke end; they do not hold loads on air loss. For held loads, use an external rod lock or the SAIL/BSAI lock variants.
Airtac SID Series Double-Rod Cylinder SID160X400 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID160X400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X400 |
| Bore size | Ø160 mm |
| Stroke | 400 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 SAID160X400 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 SAID160X400 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 SID160X400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 SID160X400 Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously from one piston, utilising the equal both-ways 13194N @0.7MPa force to cut symmetrically without requiring a second cylinder.
Anti-Rotation Transfer Gate
The dual exiting rods prevent rotational twist during a 400mm transfer stroke, keeping heavy workpiece pallets perfectly aligned on the conveyor without external linear bearings.
Replacing the Airtac SID Series Double-Rod Cylinder SID160X400 with the SAID160X400
To replace the discontinued SID160X400, install the SAID160X400 directly into your existing ISO 15552 FA, LB, or TC mounts without altering the G3/4 plumbing. Size both ways by confirming the 9425N @0.5MPa equal force is sufficient; if not, step up to the 200mm bore. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously from one piston. Since this non-magnetic SKU cannot carry a sensor, external positioning is required. For the 400mm stroke, add external guides to prevent rod bending under side loads. Never rely on the cushion for load holding; if air drops, use a pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID160X400
- ✓ 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 SID160X400 FAQ
Yes, the AirTAC SID160X400 is discontinued. The direct replacement is the SAID160X400. It shares the identical ISO 15552 interface, 160mm bore, 400mm stroke, G3/4 port, and mounting dimensions, but features an upgraded piston seal for longer life.
Force is equal both ways at 9425N @0.5MPa, 13194N @0.7MPa, and 16964N @0.9MPa. Operating pressure is 0.15-1.0MPa. Speed is 30-500mm/s. The G3/4 port feeds a Ø40mm rod with M36x2 threads, and the 50mm cushions only decelerate near stroke end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID160X400
Send us the quantity and destination. We confirm price, stock and lead time on the SAID160X400 replacement — usually within 7-8 hours.