This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X60S, 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 SI63X60S
The AirTAC Airtac SI63 Standard Cylinder SI63X60S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 60mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X60S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke60 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X60S
- 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 SI63X60S
The AirTAC SI63X60S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 60mm stroke. Delivering 1559N push force at 0.5MPa through a G3/8 port, it is replaced by the SAI63X60S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, output force, port and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SI63X60S includes a piston magnet for CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF and BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X60S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X60S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X60S |
| Bore size | Ø63 mm |
| Stroke | 60 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 SAI63X60S 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 SAI63X60S 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 SI63X60S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×60 | 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 SI63X60S Is Used
Mid-Tonnage Clamping
Secures heavy workpieces during CNC machining, utilizing the 1559N push force to hold parts rigidly against cutting forces.
Package Diversion
Actuates routing gates on high-speed packaging lines, using the 60mm stroke to deflect parcels efficiently.
Pallet Stops
Functions as a robust pneumatic stop in conveyor endpoints, halting loaded pallets with reliable 1402N pull force.
Replacing the Airtac SI63 Standard Cylinder SI63X60S with the SAI63X60S
To replace the SI63X60S, order the SAI63X60S. Confirm the ISO 15552 interface, 63mm bore, 60mm stroke, G3/8 port (PT/G/NPT thread), M16x1.5 rod thread and the -S magnet for CS1-B/DS1-B switches. The SAI accepts current AirTAC switches. For sizing, the 63mm bore yields 1559N push at 0.5MPa; a 50mm bore gives 982N, while an 80mm bore provides 2513N. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Rod material options include carbon steel, SUS420J2 (A) or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X60S
- ✓ 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 SI63X60S FAQ
Yes, the SI63X60S is discontinued. The direct replacement is the SAI63X60S. It shares the same ISO 15552 mounting interface, 63mm bore, 60mm stroke, output force, G3/8 port and mounting accessories, fitting directly into existing fixtures.
The 63mm bore cylinder features a G3/8 port and delivers 1559N push / 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max force of 318kgf at 1.0MPa. It operates at 30-800mm/s with a 30mm adjustable air cushion at each end.
Request a Quote for the SAI63X60S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X60S replacement — usually within 7-8 hours.