This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX95, 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 SI63AX95
The AirTAC SI63 Standard Cylinder SI63AX95 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 SAI63AX95, 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 → SAI63AX95
- 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 SI63AX95
The AirTAC SI63AX95 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 95mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63AX95. This direct successor shares the exact ISO 15552 mounting interface, bore, and output, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. For load holding, note that cushions only decelerate; use an external rod lock or SAIL/BSAI variant.
Airtac SI63 Standard Cylinder SI63AX95 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX95 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX95 |
| 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 SAI63AX95 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 SAI63AX95 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 SI63AX95
| 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 SI63AX95 Is Used
Clamp Actuation
Provides 1559 N of secure clamping force at 0.5 MPa for holding medium-duty steel workpieces during machining operations.
Package Diverting
Drives a 95mm stroke diverting arm to redirect heavy cartons on a packaging line, utilizing the 30-800 mm/s speed range.
Pallet Stopping
Acts as a robust end-stop for incoming pallets, absorbing kinetic energy via the 30mm adjustable air cushions at both ends.
Replacing the Airtac SI63 Standard Cylinder SI63AX95 with the SAI63AX95
To replace the SI63AX95, order the SAI63AX95. Verify the ISO 15552 mounting interface, 63mm bore, 95mm stroke, G3/8 port (PT/G/NPT thread), and your specific mounting accessory. Because this SKU lacks a magnet, it cannot support position sensing; if needed, specify an SAI63AX95S. Sizing both ways: the 63mm bore yields 1559 N push at 0.5 MPa, while the neighbouring 80mm bore offers 2513 N. The default carbon steel rod is standard, but the -A option provides a SUS420J2 stainless rod for corrosion resistance. For suspended loads, a plain cylinder drifts on air loss—cushions only decelerate—so specify a SAIL or BSAI lock variant, or add an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX95
- ✓ 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 SI63AX95 FAQ
Yes, the AirTAC SI63AX95 is discontinued. The direct replacement is the SAI63AX95. It shares the identical ISO 15552 mounting interface, 63mm bore, 95mm stroke, output force, and G3/8 port, fitting seamlessly into your existing fixtures.
This 63mm bore cylinder features a G3/8 air port and M16x1.5 rod thread. At 0.5 MPa it provides 1559 N push and 1402 N pull force. At 0.7 MPa push is 2182 N, and 2805 N at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa.
Request a Quote for the SAI63AX95
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX95 replacement — usually within 7-8 hours.