This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX95S, 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 SI63AX95S
The AirTAC SI63 Standard Cylinder SI63AX95S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 95mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX95S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke95 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX95S
- 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 SI63AX95S
The AirTAC SI63AX95S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, 95 mm stroke, and a G3/8 air port. Delivering 1559 N push force at 0.5 MPa, it is replaced by the SAI63AX95S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, output force, port size, and accessories, fitting existing fixtures perfectly.
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 suffix specifies a SUS420J2 stainless piston rod for corrosion resistance, while the -S magnet works with legacy CS1-B/DS1-B sensors. For load holding, note that cushions only decelerate; use an external rod lock or pilot check valve.
Airtac SI63 Standard Cylinder SI63AX95S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX95S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX95S |
| Bore size | Ø63 mm |
| Stroke | 95 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 SAI63AX95S 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 SAI63AX95S 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 SI63AX95S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×95 | 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 SI63AX95S Is Used
Clamping Mechanisms
Provides reliable 1559 N clamping force at 0.5 MPa for securing mid-weight machined components during milling or drilling operations.
Diverting Arms
Drives 95 mm stroke diverting or sorting gates on packaging lines, with the SUS420J2 stainless rod offering splash resistance.
Replacing the Airtac SI63 Standard Cylinder SI63AX95S with the SAI63AX95S
To replace the SI63AX95S, order the SAI63AX95S. Confirm the ISO 15552 mounting interface, 63 mm bore, 95 mm stroke, G3/8 port (PT/G/NPT thread), and your mounting accessory. The -A denotes a SUS420J2 stainless rod, and -S means a magnet for CS1-B/DS1-B switches. Sizing both ways: a 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. A plain cylinder drifts on air loss as cushions only decelerate; for held loads, use an external pilot check valve or explore the SAIL/BSAI lock variants. The 95 mm stroke is under 300 mm, so rod-bending side-load risks are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX95S
- ✓ 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 SI63AX95S FAQ
Yes, the SI63AX95S is discontinued. The direct replacement is the SAI63AX95S. It shares the same ISO 15552 mounting interface, 63 mm bore, 95 mm stroke, output force, G3/8 port, and accessories, fitting existing fixtures perfectly.
It features a G3/8 air port and provides 1559 N push / 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and 2805 N push at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX95S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX95S replacement — usually within 7-8 hours.