This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX700, 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 SI63 Standard Cylinder SI63AX700
The AirTAC Airtac SI63 Standard Cylinder SI63AX700 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX700, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX700
- 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 SI63 Standard Cylinder SI63AX700
The AirTAC SI63AX700 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 700 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63AX700, matching the interface, force, and stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This SKU has an SUS420J2 stainless rod (-A) but no magnet, so it cannot take a sensor.
Airtac SI63 Standard Cylinder SI63AX700 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX700 |
| Bore size | Ø63 mm |
| Stroke | 700 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 SAI63AX700 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 SAI63AX700 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63AX700
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×700 | 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 SI63 Standard Cylinder SI63AX700 Is Used
Long-Stroke Diversion
Pushes heavy pallets sideways across a 700 mm gap using the 1559 N push force at 0.5 MPa.
Elevator Lowering
Lowers a 79 kg vertical load smoothly, relying on the 30 mm adjustable cushions to decelerate at stroke end.
Corrosive Milling
Actuates a machining fixture in a humid shop using the SUS420J2 stainless rod for corrosion resistance.
Replacing the Airtac SI63 Standard Cylinder SI63AX700 with the SAI63AX700
To replace the SI63AX700, order the SAI63AX700. Verify the ISO 15552 mounting interface, 63 mm bore, 700 mm stroke, G3/8 port, and SUS420J2 rod. A 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. This SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. For the 700 mm stroke, use external guides to prevent rod bending. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX700
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63AX700 FAQ
Yes, the SI63AX700 is discontinued. The direct replacement is the SAI63AX700. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 700 mm stroke, output force, and G3/8 port.
It uses a G3/8 port. The thrust ratings are: 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a maximum force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX700
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX700 replacement — usually within 7-8 hours.