This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX105S, 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 SI63AX105S
The AirTAC Airtac SI63 Standard Cylinder SI63AX105S 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 SAI63AX105S, 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 → SAI63AX105S
- 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 SI63AX105S
The AirTAC SI63AX105S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 105 mm stroke. Featuring a SUS420J2 stainless steel rod (-A) and a piston magnet (-S) for CS1-B/DS1-B switches, it delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63AX105S, matching the bore, stroke, force, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. If you need load holding on air loss, note that the standard cushion only decelerates; you must use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Airtac SI63 Standard Cylinder SI63AX105S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX105S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX105S |
| 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 SAI63AX105S 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 SAI63AX105S 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 SI63AX105S
| 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 SI63AX105S Is Used
Stainless Rod Clamping
Uses the SUS420J2 rod to resist moisture while providing 1559 N of clamping force on machined parts.
Package Diverting
Actuates routing gates at 30-800 mm/s, moving moderate loads reliably along packaging lines.
Replacing the Airtac SI63 Standard Cylinder SI63AX105S with the SAI63AX105S
To replace the SI63AX105S, order the SAI63AX105S. Verify the ISO 15552 mounting interface, 63 mm bore, 105 mm stroke, G3/8 port (PT/G/NPT thread options), and mounting accessories. The -S magnet enables current AirTAC switches, while the -A rod specifies SUS420J2 stainless steel. Sizing both ways: this bore yields 1559 N push at 0.5 MPa; if undersized, the 80 mm bore offers 2513 N. A plain cylinder drifts without air, so for load holding choose the SAIL lock, BSAI clamp-lock, or external valves. The SAIF variant adds a built-in valve if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX105S
- ✓ 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 SI63AX105S FAQ
Yes, the SI63AX105S is discontinued. The direct replacement is the SAI63AX105S. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 105 mm stroke, force, G3/8 port, and mounting interface.
This double-acting cylinder has a G3/8 port. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX105S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX105S replacement — usually within 7-8 hours.