This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX160S, 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 SI63AX160S
The AirTAC Airtac SI63 Standard Cylinder SI63AX160S 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 SAI63AX160S, 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 → SAI63AX160S
- 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 SI63AX160S
The AirTAC SI63AX160S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 160 mm stroke. It delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, utilizing a G3/8 air port and an M16x1.5 rod thread. AirTAC replaced this legacy unit with the SAI63AX160S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for extended life and lower start-up pressure. This specific unit includes the -S magnet for legacy CS1-B/DS1-B sensors and the -A SUS420J2 stainless steel rod for corrosion resistance. A standard cylinder does not hold load without live air; for that, consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI63 Standard Cylinder SI63AX160S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX160S |
| 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 SAI63AX160S 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 SAI63AX160S 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 SI63AX160S
| 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 SI63AX160S Is Used
Clamp Actuation
Provides reliable 1559 N clamping force for machining fixtures, with the SUS420J2 rod resisting coolant splash.
Product Diverting
Drives diverters and gates on production lines, utilizing the 160 mm stroke to reposition components.
Replacing the Airtac SI63 Standard Cylinder SI63AX160S with the SAI63AX160S
To replace the discontinued SI63AX160S, order the SAI63AX160S. Confirm your ISO 15552 mounting fixtures (LB, FA, TC, etc.), the 160 mm stroke, the G3/8 port, and the -S magnet for CS1-B/DS1-B switches. The -A designation specifies a SUS420J2 stainless rod over standard carbon steel. Sizing both ways: a 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. If you need to hold a load vertically without live air, the cushion only decelerates; you must use an external pilot check valve, rod lock, or the SAIL/BSAI variants. At 160 mm stroke, side-load is minimal, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX160S
- ✓ 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 SI63AX160S FAQ
Yes, the AirTAC SI63AX160S is discontinued. The direct replacement is the SAI63AX160S. It shares the identical ISO 15552 mounting interface, 63 mm bore, 160 mm stroke, force, and G3/8 port, fitting directly into your existing fixtures.
This 63 mm bore cylinder features a G3/8 air port and an M16x1.5 rod thread. The output force 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 maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX160S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX160S replacement — usually within 7-8 hours.