This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X160S, 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 SI63X160S
The AirTAC Airtac SI63 Standard Cylinder SI63X160S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 160mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X160S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke160 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X160S
- 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 SI63X160S
The AirTAC SI63X160S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 160 mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63X160S. This direct upgrade keeps the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X160S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X160S |
| Bore size | Ø63 mm |
| Stroke | 160 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 SAI63X160S 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 SAI63X160S 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 SI63X160S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×160 | 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 SI63X160S Is Used
Mid-Tonnage Clamping
Holds workpieces securely in CNC machining fixtures, utilizing the 1559 N push force at 0.5 MPa for rigid 63 mm bore actuation.
Package Diversion
Drives 160 mm stroke routing gates on assembly lines, moving moderate loads at 30-800 mm/s operating speeds.
Replacing the Airtac SI63 Standard Cylinder SI63X160S with the SAI63X160S
To replace the SI63X160S, order the SAI63X160S. It drops into existing fixtures per the ISO 15552 mounting interface, matching the 63 mm bore, 160 mm stroke, M16x1.5 rod thread, G3/8 port (PT/G/NPT options) and 30 mm cushions. Retain your -S magnet and mounting accessory (LB, FA, TC, etc.); the SAI uses current AirTAC switches instead of legacy CS1-B/DS1-B. For sizing, a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use the SAIL lock, BSAI clamp-lock, or an external pilot check valve to hold loads. For stroke lengths of 300 mm or more, add external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X160S
- ✓ 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 SI63X160S FAQ
Yes, the SI63X160S is discontinued. The direct replacement is the AirTAC SAI63X160S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 63 mm bore, 160 mm stroke, output force, G3/8 port and mounting accessories.
The 63 mm bore delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s, with a 20 mm rod, M16x1.5 thread and 30 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X160S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X160S replacement — usually within 7-8 hours.