This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X900, 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 SID63X900
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X900 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X900, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X900
- 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 SID63X900
The AirTAC SID63X900 is a double-acting, double-rod ISO 15552 cylinder with a 63mm bore and 900mm stroke. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal (1402N @0.5MPa). This legacy unit is discontinued; the direct replacement is the SAID63X900, matching the G3/8 port, M16x1.5 thread, and 30mm cushions. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure.
Because the second rod acts as an anti-rotation guide and can drive a second tool simultaneously, double-rod designs excel in compact synchronous setups. Note this SKU lacks a magnet (-S), so it cannot accept magnetic switches. A plain cylinder drifts on air loss; cushions only decelerate near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID63X900 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X900 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X900 |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAID63X900 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 SAID63X900 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 SID63X900
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×900 | 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 SID63X900 Is Used
Synchronous Transfer
Drives two parallel conveyor pickup heads at once using both extending rods, keeping equal force during part transfer.
Anti-Rotation Press
The dual-rod architecture prevents piston twisting during vertical pressing, maintaining precise alignment without external guides.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X900 with the SAID63X900
To replace the discontinued SID63X900, install the direct replacement SAID63X900, reusing the exact ISO 15552 mounting interface (Basic, FA, LB, TC) without machining. Size both ways by checking the equal push/pull force: 1402N @0.5MPa, 1962N @0.7MPa, 2523N @0.9MPa. If this is insufficient, step up to the 80mm bore; if oversized, step down to the 50mm bore. Choose a double-rod cylinder when you need anti-rotation resistance or must drive two tools from one piston. This non-magnetic SKU cannot take sensors. For the 900mm stroke, add external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X900
- ✓ 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 SID63X900 FAQ
Yes, the SID63X900 is discontinued. The direct replacement is the SAID63X900, which shares the same ISO 15552 interface, 900mm stroke, G3/8 port, and mounting options. The SAI family also adds SAIL and BSAI lock variants the SI line lacked.
Force is equal both ways: 1402N @0.5MPa, 1962N @0.7MPa, and 2523N @0.9MPa. The 63mm bore uses a G3/8 port, a 20mm rod with M16x1.5 thread, and 30mm adjustable cushions. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X900
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X900 replacement — usually within 7-8 hours.