This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX1000, 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 SI63AX1000
The AirTAC Airtac SI63 Standard Cylinder SI63AX1000 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1000mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX1000, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1000 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX1000
- 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 SI63AX1000
The AirTAC SI63AX1000 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1000 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63AX1000, matching the interface, stroke and force exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU uses a SUS420J2 stainless rod (A) but lacks a magnet, so it cannot take CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63AX1000 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX1000 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX1000 |
| Bore size | Ø63 mm |
| Stroke | 1000 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 SAI63AX1000 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 SAI63AX1000 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 SI63AX1000
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1000 | 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 SI63AX1000 Is Used
Long-Stroke Diversion
Drives large package pushers across wide conveyor belts over the full 1000 mm travel.
Pallet Handling
Actuates heavy pallet stops and positioning gates in automated high-bay storage systems.
Replacing the Airtac SI63 Standard Cylinder SI63AX1000 with the SAI63AX1000
To replace the SI63AX1000, order the SAI63AX1000. Verify the ISO 15552 mounting interface, 63 mm bore, 1000 mm stroke, G3/8 port, and SUS420J2 rod. Because this SKU has no -S magnet, it cannot accept position sensors. If sizing alternatives, neighbouring bores offer different forces, but at 0.5 MPa this bore gives 1559 N push and 1402 N pull. For the 1000 mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX1000
- ✓ 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 SI63AX1000 FAQ
Yes, the SI63AX1000 is discontinued. The direct replacement is the SAI63AX1000, offering the same ISO 15552 mounting interface, 63 mm bore, 1000 mm stroke, output force, and G3/8 port.
It features a G3/8 port and provides 1559 N push / 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a maximum theoretical force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX1000
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX1000 replacement — usually within 7-8 hours.