This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X32S, 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 SI63X32S
The AirTAC Airtac SI63 Standard Cylinder SI63X32S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 32mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X32S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke32 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X32S
- 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 SI63X32S
The AirTAC SI63X32S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 32 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X32S, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. For holding loads, note that a standard cylinder drifts without air; the cushion only decelerates. Use the SAIL or BSAI lock variants if needed.
Airtac SI63 Standard Cylinder SI63X32S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X32S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X32S |
| Bore size | Ø63 mm |
| Stroke | 32 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 SAI63X32S 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 SAI63X32S 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 SI63X32S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×32 | 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 SI63X32S Is Used
Short-Stroke Clamping
Ideal for holding heavy castings during machining, using the 1559 N push force to secure parts firmly within a compact 32 mm travel.
Package Diverting
Provides robust actuation for mid-weight diverters on production lines, where the 63 mm bore delivers reliable impact force at high cycle rates.
Pallet Stopper
Acts as a heavy-duty stop block for pallets, absorbing kinetic energy using the adjustable 30 mm air cushions at both stroke ends.
Replacing the Airtac SI63 Standard Cylinder SI63X32S with the SAI63X32S
To replace the SI63X32S, order the SAI63X32S and confirm the ISO 15552 mounting interface, 63 mm bore, 32 mm stroke, G3/8 port (PT/G/NPT thread), and the -S magnet for CS1-B/DS1-B switches. The SAI family also adds SAIF (built-in valve) and BSAI (clamp-lock) options. Sizing both ways: a 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. Remember, a plain cylinder does not hold load on air loss; use an external rod lock or pilot check valve for vertical holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X32S
- ✓ 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 SI63X32S FAQ
Yes, the SI63X32S is discontinued. The direct replacement is the AirTAC SAI63X32S. It shares the identical ISO 15552 mounting interface, 63 mm bore, 32 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The 63 mm bore features a G3/8 port and M16x1.5 rod thread. Force output is 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. Operating speed is 30-800 mm/s.
Request a Quote for the SAI63X32S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X32S replacement — usually within 7-8 hours.