This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX105, 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 SI63AX105
The AirTAC Airtac SI63 Standard Cylinder SI63AX105 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 105mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX105, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX105
- 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 SI63AX105
The AirTAC SI63AX105 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 105 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63AX105, which matches the exact ISO 15552 mounting interface, stroke, and output force.
This SKU features a SUS420J2 stainless steel rod (option A) but lacks a magnet, meaning it cannot accept a position switch. The SAI upgrade utilizes two Y-shaped one-way piston seals for low start-up pressure. For load holding, note that standard cylinders drift without live air; consider the SAIL lock variant.
Airtac SI63 Standard Cylinder SI63AX105 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX105 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX105 |
| Bore size | Ø63 mm |
| Stroke | 105 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 SAI63AX105 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 SAI63AX105 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 SI63AX105
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×105 | 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 SI63AX105 Is Used
Mid-Tonnage Pressing
Applies 1559 N of push force at 0.5 MPa for seating bearings or light stamping tasks within automated machinery.
Product Diversion
Drives 105 mm stroke diverters or gates to re-route medium weight packages on processing lines.
Replacing the Airtac SI63 Standard Cylinder SI63AX105 with the SAI63AX105
To replace the SI63AX105, order the SAI63AX105. Confirm the ISO 15552 mounting interface, 63 mm bore, 105 mm stroke, G3/8 port (PT/G/NPT thread), and your specific mounting accessory. Because this SKU lacks the -S magnet, it cannot support sensing; if switches are needed, select an SAI model with the magnet option. Sizing context: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Remember that a standard cylinder does not hold load without air pressure—the cushion only decelerates—so for suspended loads use an external pilot check valve or the BSAI clamp-lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX105
- ✓ 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 SI63AX105 FAQ
Yes, the SI63AX105 is discontinued. The direct replacement is the SAI63AX105. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 105 mm stroke, output force, G3/8 port, and mounting fixtures.
The 63 mm bore 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 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 SAI63AX105
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX105 replacement — usually within 7-8 hours.