This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X300, 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 SID63X300
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X300 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X300, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X300
- 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 SID63X300
The AirTAC SID63X300 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 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. This SID model is discontinued and end-of-life. The direct replacement is the SAID63X300, matching the 63mm bore, 300mm stroke, G3/8 port, and mounting interface. The SAI family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
With a 20mm piston rod and M16x1.5 thread, this unit runs at 30-800 mm/s with a 30mm adjustable air cushion at each end. This SKU has no -S magnet and cannot take a magnetic switch. A plain cylinder does not hold its load on air loss; the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID63X300 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X300 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X300 |
| Bore size | Ø63 mm |
| Stroke | 300 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 SAID63X300 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 SAID63X300 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 SID63X300
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×300 | 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 SID63X300 Is Used
Dual-End Transfer Pusher
Drives a conveyor sorting flap from one end while the opposing rod simultaneously triggers a mechanical stop, utilising the equal both-ways force to keep timing perfectly synchronised.
Anti-Rotation Workpiece Clamp
Secures asymmetrical machined parts during milling. The twin-rod architecture prevents torsional twist without needing external guide rails, ensuring high clamping repeatability.
Synchronized Dual-Tool Actuator
Powers a stamping head on the front face and a small part ejector on the rear, executing both actions in one stroke to reduce cycle time and save fixture space.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X300 with the SAID63X300
To replace the discontinued SID63X300, install the direct replacement SAID63X300, reusing the exact ISO 15552 mounting interface (Basic, FA, LB, or TC) and G3/8 port. Size both ways by checking neighbour bores while relying on the equal both-ways force: the 50mm bore yields 825 N @0.5 MPa, while the 80mm bore yields 2268 N @0.5 MPa. A double rod is right when you need anti-rotation stability or must drive two tools from one piston. Because this SKU lacks the -S magnet, it cannot support sensing; add an -S suffix if you need legacy CS1-B/DS1-B sensor accuracy. For this 300mm stroke, add external guides to prevent rod-bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X300
- ✓ 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 SID63X300 FAQ
Yes, the AirTAC SID63X300 is discontinued and end-of-life. The direct replacement is the SAID63X300. It shares the same ISO 15552 mounting interface, 63mm bore, 300mm stroke, G3/8 port, and equal both-ways force, but adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The G3/8 port feeds a double-acting double-rod design where force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. It never quotes a larger single-rod push value. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and the 30mm adjustable air cushion only decelerates near stroke end—it does not hold the load on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X300
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X300 replacement — usually within 7-8 hours.