This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X125, 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 SID63X125
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X125 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X125, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X125
- 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 SID63X125
The AirTAC SID63X125 is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding identical push and pull forces of 1402 N at 0.5 MPa. The direct replacement is the SAID63X125, retaining the 63 mm bore, 125 mm stroke, G3/8 port, and original mounting interface. The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
Because both faces use the rod-side area, force is equal both ways (1962 N at 0.7 MPa, 2523 N at 0.9 MPa). The back rod can drive a second tool or carry a sensor cam, and ISO 15552 mounting dimensions allow direct reuse of existing brackets. This non-magnet SKU cannot take a switch. A plain cylinder drifts on air loss; cushions only decelerate, so use SAIL or an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID63X125 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X125 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X125 |
| Bore size | Ø63 mm |
| Stroke | 125 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 SAID63X125 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 SAID63X125 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 SID63X125
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 SID63X125 Is Used
Twin-Tool Workholding
Drives two opposing clamps or machining heads simultaneously from a single piston, ensuring perfectly synchronized grip and release on automated lathes.
Balanced Vertical Lifts
Equal push and pull force prevents sagging on the return stroke in vertical pick-and-place units, keeping elevation movements smooth and balanced.
Anti-Rotation Diverters
The dual-rod geometry resists torsional twisting during high-speed package diverting on conveyor belts, maintaining precise alignment without external guides.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X125 with the SAID63X125
To replace the discontinued SID63X125, specify the SAID63X125—it is a direct swap preserving the 63 mm bore, 125 mm stroke, G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. Size both directions by the equal-both-ways force: 1402 N at 0.5 MPa, stepping to the 80 mm bore (2268 N) if more thrust is needed, or down to the 50 mm bore (825 N) for lighter loads. Choose a double-rod design when you need anti-rotation stability or must drive two mechanisms simultaneously. Mounting uses FA, LB, or TC brackets per ISO 15552. This SKU lacks the -S magnet and cannot accept sensors. For strokes at or above 300 mm, verify side-load bearing limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X125
- ✓ 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 SID63X125 FAQ
Yes, the SID63X125 is discontinued. The direct replacement is the SAID63X125. It shares the same ISO 15552 interface, 63 mm bore, 125 mm stroke, G3/8 port, and mounting options, while adding an upgraded Y-shaped piston seal for longer life.
Being a double-rod cylinder, push and pull forces are equal both ways: 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at 0.9 MPa. It operates at 30-800 mm/s with a 30 mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X125 replacement — usually within 7-8 hours.