This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX1000S, 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 SI63AX1000S
The AirTAC Airtac SI63 Standard Cylinder SI63AX1000S 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 SAI63AX1000S, 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 → SAI63AX1000S
- 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 SI63AX1000S
The AirTAC SI63AX1000S 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 SAI63AX1000S, matching the bore, stroke, force, port, and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -A code specifies a SUS420J2 stainless steel rod, and the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63AX1000S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX1000S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX1000S |
| 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 SAI63AX1000S 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 SAI63AX1000S 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 SI63AX1000S
| 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 SI63AX1000S Is Used
Long-Stroke Diversion
Drives large package pushers across wide conveyor belts over the full 1000 mm travel.
Pallet Handling
Shifts heavy pallets laterally in automated storage systems using 1559 N push force.
Material Lowering
Lowers workpieces vertically with controlled deceleration provided by adjustable cushions.
Replacing the Airtac SI63 Standard Cylinder SI63AX1000S with the SAI63AX1000S
To replace the SI63AX1000S, order the SAI63AX1000S. Verify the ISO 15552 mounting interface, 63 mm bore, 1000 mm stroke, G3/8 port, and mounting accessories. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B), while the -A denotes the SUS420J2 stainless rod. Sizing options: a 50 mm bore yields 982 N push at 0.5 MPa, and an 80 mm bore yields 2513 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. For the 1000 mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX1000S
- ✓ 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 SI63AX1000S FAQ
Yes, the SI63AX1000S is discontinued. The direct replacement is the SAI63AX1000S. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 1000 mm stroke, output force, G3/8 port, and mounting interface.
This double-acting cylinder uses a G3/8 air port. It generates 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX1000S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX1000S replacement — usually within 7-8 hours.