This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X75S, 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 SID63X75S
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X75S
- 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 SID63X75S
The AirTAC SID63X75S is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Because both faces use the identical rod-side area, push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The direct replacement is the SAID63X75S, matching the 63mm bore, 75mm stroke, G3/8 port, and ISO 15552 mounting interface. The SAI successor uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
A double-rod design prevents piston rotation and lets the back rod carry a sensor cam or drive a second tool simultaneously. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; a plain cylinder does not hold loads on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID63X75S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X75S |
| Bore size | Ø63 mm |
| Stroke | 75 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 SAID63X75S 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 SAID63X75S 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 SID63X75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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 SID63X75S Is Used
Synchronized Tool Driving
Drives two opposing mechanisms simultaneously using both rod ends, ensuring perfectly equal force and timing for precision machining fixtures.
Anti-Rotation Transfer
Transfers workpieces along a conveyor without rotational drift, leveraging the double-rod symmetry to maintain exact alignment during fast cycling.
Dual-End Sensor Cam
Uses the rear rod extension to carry a sensor cam, allowing external position tracking while the front rod performs the primary work stroke.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X75S with the SAID63X75S
To replace the discontinued SID63X75S, specify the SAID63X75S, which is a direct swap retaining the ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread. Size both directions by verifying the equal both-ways force: if 1402 N @0.5 MPa is insufficient, step up to the 80mm bore (2268 N @0.5 MPa) or down to the 50mm bore (825 N @0.5 MPa). Choose a double-rod cylinder when you need anti-rotation stability, a back rod for a sensor cam, or to drive two tools. Mounting options include Basic, FA, LB, and TC. The -S suffix confirms the magnet is present for legacy CS1-B/DS1-B switches. Since the 75mm stroke is below 300mm, side-load rod deflection is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X75S
- ✓ 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 SID63X75S FAQ
Yes, the SID63X75S is discontinued. The direct replacement is the SAID63X75S. It matches the ISO 15552 mounting interface, 63mm bore, 75mm stroke, G3/8 port, and equal both-ways force. The SAI family also adds SAIL and BSAI lock variants the SI line lacked.
Force is equal both ways at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The speed range is 30-800 mm/s. It features a 20mm rod, M16x1.5 thread, and 30mm adjustable air cushions at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X75S replacement — usually within 7-8 hours.