This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X120S, 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 SID63X120S
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 120mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X120S
- 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 SID63X120S
The AirTAC SID63X120S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Both faces use the rod-side area, making push and pull force equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The bore is 63 mm, the rod is Ø20 mm with an M16x1.5 thread, and the air port is G3/8. The direct replacement is the SAID63X120S, sharing the same interface, stroke, and mounting. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life.
Because the second rod prevents single-sided piston area differential, force is identical in both directions. This configuration provides inherent anti-rotation guidance and allows the back rod to carry a sensor cam for dual-end position confirmation. The built-in magnet (-S) supports legacy CS1-B/DS1-B switches, while the SAI replacement uses current AirTAC switches. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID63X120S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X120S |
| Bore size | Ø63 mm |
| Stroke | 120 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 SAID63X120S 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 SAID63X120S 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 SID63X120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×120 | 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 SID63X120S Is Used
Equal-Force Workpiece Transfer
Drives a transfer carriage where the return stroke must match the advance stroke force exactly, ensuring consistent clamping pressure without requiring pressure regulators.
Dual-End Sensor Cam Actuation
The rear extension rod carries a precision cam to trigger external legacy CS1-B/DS1-B sensors at both stroke extremes while the front rod performs the primary work.
Anti-Rotation Gripper Slides
Powers a pneumatic gripper slide that requires inherent anti-rotation stability from the twin rods to prevent jaw twisting during heavy lateral loading.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X120S with the SAID63X120S
To replace the discontinued SID63X120S, install the direct replacement SAID63X120S, which matches the 63 mm bore, 120 mm stroke, G3/8 port, and ISO 15552 mounting. Size both directions by the equal force rating: 1402 N @0.5 MPa, 1962 N @0.7 MPa, or 2523 N @0.9 MPa. If less force is acceptable, step down to the 50 mm bore (825 N @0.5 MPa); if more is needed, step up to the 80 mm bore (2268 N @0.5 MPa). A double-rod design is correct when you need equal push/pull force, anti-rotation resistance, or a back-end sensor cam. Mounting options include Basic, FA, LB, and TC. The -S suffix indicates a piston magnet for switches. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X120S
- ✓ 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 SID63X120S FAQ
Yes, the SID63X120S is discontinued. The direct replacement is the SAID63X120S. It shares the same ISO 15552 mounting interface, 63 mm bore, 120 mm stroke, G3/8 port, and equal both-ways force. The SAI family also adds upgraded piston seals and SAIL/BSAI lock variants.
Because it is 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 is Ø20 mm with an M16x1.5 thread, and speed is 30-800 mm/s. Air cushions only decelerate; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X120S replacement — usually within 7-8 hours.