This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X350S, 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 SID63X350S
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X350S
- 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 SID63X350S
The AirTAC SID63X350S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. It features a 63mm bore, M16x1.5 rod thread, G3/8 port, and a built-in piston magnet (-S) for legacy CS1-B/DS1-B switches. The direct replacement is the SAID63X350S, sharing the same interface, stroke, and mounting.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note that air cushions only decelerate near stroke end; use an external rod lock or SAIL/BSAI variant for load holding on air loss.
Airtac SID Series Double-Rod Cylinder SID63X350S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X350S |
| Bore size | Ø63 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID63X350S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAID63X350S 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 SID63X350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | 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 SID63X350S Is Used
Synchronized Tool Driving
Drives two opposing tools simultaneously from a single piston, utilizing the equal both ways force to ensure perfectly matched extension and retraction cycles.
Anti-Rotation Guiding
The dual-rod architecture prevents piston rotation, maintaining precise angular alignment for components that require strict orientation during transit.
Dual-End Sensor Cam
Uses the extended back rod to carry a sensor cam, enabling external position tracking without consuming valuable space on the primary working end.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X350S with the SAID63X350S
To replace the discontinued SID63X350S, specify the SAID63X350S, which preserves the ISO 15552 mounting interface, 350mm stroke, G3/8 port, and equal both ways force. When sizing, verify that the 1402 N @0.5 MPa equal force is sufficient for both push and pull directions; if more force is needed, step up to the 80mm bore, or drop to 50mm if less is required. A double-rod design is right when you need anti-rotation stability, want to drive two tools simultaneously, or need to mount a sensor cam on the back rod. Reuse FA, LB, or TC mounts directly. The -S suffix indicates a piston magnet for switch sensing. For this 350mm stroke, add external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X350S
- ✓ 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 SID63X350S FAQ
Yes, the SID63X350S is discontinued. The direct replacement is the SAID63X350S. It shares the same ISO 15552 interface, 63mm bore, 350mm stroke, G3/8 port, and equal both ways force, but features an upgraded two-piece Y-shaped piston seal for longer life.
As a double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The air port is G3/8, the rod thread is M16x1.5, and it includes a 30mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X350S replacement — usually within 7-8 hours.