This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X50, 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 SID63X50
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X50
- 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 SID63X50
The AirTAC SID63X50 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, meaning push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The bore is 63 mm, stroke 50 mm, rod Ø20 mm, and the air port is G3/8. This SID model is discontinued; the direct replacement is the SAID63X50, matching the interface, force, port, and mounting.
The SAID upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Because it is double-rod, the back rod can drive a second tool or carry a sensor cam while resisting rotation. This SKU has no -S magnet and cannot take a switch. A plain cylinder drifts on air loss; the cushion only decelerates. For held loads use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID63X50 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X50 |
| Bore size | Ø63 mm |
| Stroke | 50 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 SAID63X50 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 SAID63X50 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 SID63X50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SID63X50 Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from a single piston, utilizing the equal both ways 1962 N @0.7 MPa force for synchronized material removal.
Anti-Rotation Diverter
The dual exiting rods prevent mechanical twist during fast 50 mm sorting strokes, maintaining precise tracking on high-speed packaging lines.
Cam-Actuated Pressing
Uses the rear rod extension to mount an external mechanical cam, triggering secondary operations without affecting the primary 1402 N @0.5 MPa work output.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X50 with the SAID63X50
Replace the discontinued SID63X50 directly with the SAID63X50, reusing your existing ISO 15552 FA, LB, or TC mounts. Size both ways by checking neighbor bores: the 50 mm yields 825 N @0.5 MPa, and the 80 mm yields 2268 N @0.5 MPa, both equal in push and pull. Choose a double-rod when you need anti-rotation, or when the back rod must carry a sensor cam. This non-magnetic SKU cannot fit a switch. For this 50 mm stroke, side-load bending is negligible. Never rely on air for load holding without live air; use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X50
- ✓ 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 SID63X50 FAQ
Yes, the SID63X50 is discontinued. The direct replacement is the SAID63X50, offering the same ISO 15552 interface, 63 mm bore, 50 mm stroke, G3/8 port, and mounting hardware.
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 is Ø20 mm with an M16x1.5 thread, and speed is 30-800 mm/s.
Request a Quote for the SAID63X50
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X50 replacement — usually within 7-8 hours.