This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX10S, 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 SI63AX10S
The AirTAC Airtac SI63 Standard Cylinder SI63AX10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 10mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke10 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX10S
- 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 SI63AX10S
The AirTAC SI63AX10S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore, 10mm stroke, and a SUS420J2 stainless steel rod. Delivering 1559N push force at 0.5MPa, it is replaced by the SAI63AX10S. This direct successor matches the exact G3/8 port, M16x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The built-in magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL lock, SAIF valve, and BSAI clamp variants.
Airtac SI63 Standard Cylinder SI63AX10S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX10S |
| Bore size | Ø63 mm |
| Stroke | 10 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 SAI63AX10S 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 SAI63AX10S 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 SI63AX10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×10 | 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 SI63AX10S Is Used
Short-Stroke Clamping
Ideal for holding parts during machining, using the 1559N force to secure components firmly within a compact 10mm travel.
Diversion Gate
Provides rapid actuation of routing flaps on packaging lines, benefiting from the 30-800mm/s speed range for high throughput.
Ejector Mechanism
Delivers a fast, high-force push to eject finished goods from test fixtures, leveraging the corrosion-resistant SUS420J2 rod.
Replacing the Airtac SI63 Standard Cylinder SI63AX10S with the SAI63AX10S
To replace the SI63AX10S, order the SAI63AX10S, confirming the ISO 15552 interface, 63mm bore, 10mm stroke, G3/8 port, and -S magnet. The -A rod specifies SUS420J2 stainless steel for corrosion resistance over standard carbon steel. Sizing both ways: a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore provides 2513N. Note that plain cylinders drift without live air; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX10S
- ✓ 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 SI63AX10S FAQ
Yes, the SI63AX10S is discontinued. The direct replacement is the SAI63AX10S. It shares the identical ISO 15552 mounting interface, 63mm bore, 10mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 63mm bore features a G3/8 port and delivers 1559N push / 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a maximum theoretical force of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX10S replacement — usually within 7-8 hours.