This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X475S, 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 SI63X475S
The AirTAC SI63 Standard Cylinder SI63X475S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 475mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X475S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke475 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X475S
- 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 SI63X475S
The AirTAC SI63X475S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 475 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63X475S, retaining identical ISO 15552 mounting dimensions, output, and accessories.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The -S suffix denotes a piston magnet for CS1-B/DS1-B switches; the SAI uses current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X475S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X475S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X475S |
| Bore size | Ø63 mm |
| Stroke | 475 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 SAI63X475S 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 SAI63X475S 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 SI63X475S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×475 | 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 SI63X475S Is Used
Material Diversion
Drives routing gates on packaging lines, utilizing the 1559 N push force to deflect heavy cartons reliably at high cycling speeds.
Pallet Handling
Actuates 475 mm stroke stops and positioning pushers in automated storage systems, requiring external guides to manage long rod extension.
Replacing the Airtac SI63 Standard Cylinder SI63X475S with the SAI63X475S
To replace this SI cylinder, order the SAI63X475S. Verify the ISO 15552 mounting interface, 475 mm stroke, G3/8 port, and M16x1.5 rod thread. The -S magnet is present for position sensing. Neighbouring bores: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. For this 475 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss; for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X475S
- ✓ 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 SI63X475S FAQ
Yes, the AirTAC SI63X475S is discontinued. The direct replacement is the SAI63X475S. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 475 mm stroke, force, G3/8 port, and mounting interface.
The G3/8 port bore 63 mm cylinder provides 1559 N push and 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. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X475S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X475S replacement — usually within 7-8 hours.