This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX220, 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 SI63AX220
The AirTAC SI63 Standard Cylinder SI63AX220 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 220mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX220, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke220 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX220
- 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 SI63AX220
The AirTAC SI63AX220 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 220 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63AX220, which matches the original ISO 15552 mounting interface, bore, stroke, force, and port size exactly. This SUS420J2 stainless rod variant (A) offers corrosion resistance over the standard carbon steel.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63AX220 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX220 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX220 |
| Bore size | Ø63 mm |
| Stroke | 220 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 SAI63AX220 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 SAI63AX220 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 SI63AX220
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×220 | 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 SI63AX220 Is Used
Stainless Rod Clamping
Uses the SUS420J2 rod to resist moisture during automated part clamping in wash-down manufacturing cells.
Package Diverting
Provides the 1559 N push at 0.5 MPa needed to reliably divert heavy packages on a sorting conveyor line.
Pallet Lift Gates
Lifts vertical access gates in pallet flow racks, safely handling loads near the 79 kg vertical lift limit.
Replacing the Airtac SI63 Standard Cylinder SI63AX220 with the SAI63AX220
To replace the SI63AX220, order the SAI63AX220. Confirm the ISO 15552 mounting interface, 63 mm bore, 220 mm stroke, G3/8 port (PT/G/NPT), and your mounting accessory (LB, FA, TC, etc.). Because this is a no-S SKU, it cannot take a magnetic switch. Size both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. The cushion only decelerates; it does not hold load on air loss. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 220 mm stroke is under the 300 mm threshold, so standard side-load guidelines apply.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX220
- ✓ 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 SI63AX220 FAQ
Yes, the SI63AX220 is discontinued. The direct replacement is the SAI63AX220. It is dimensionally interchangeable per ISO 15552, keeping the same 63 mm bore, 220 mm stroke, G3/8 port, and mounting interface.
This double-acting cylinder uses a G3/8 port. Force ratings are: push 1559 N and pull 1402 N at 0.5 MPa, push 2182 N at 0.7 MPa, push 2805 N at 0.9 MPa, with a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX220
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX220 replacement — usually within 7-8 hours.