This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X80SN, 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 SI63X80SN
The AirTAC Airtac SI63 Standard Cylinder SI63X80SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X80SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X80SN
- 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 SI63X80SN
The AirTAC SI63X80SN is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63X80SN, matching the bore, stroke, force, port and mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also adds SAIL, SAIF and BSAI variants the SI lacked.
Airtac SI63 Standard Cylinder SI63X80SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X80SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X80SN |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAI63X80SN 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 SAI63X80SN 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 SI63X80SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SI63X80SN Is Used
Clamp Actuation
Secures heavy machining fixtures with 1559 N of push force at 0.5 MPa, ensuring rigid part holding during milling or drilling operations.
Package Diversion
Provides reliable 80 mm stroke movements to push heavy cartons or totes from a main conveyor line onto secondary sorting lanes.
Pallet Stopper
Acts as a robust pneumatic stop for incoming pallets on roller conveyors, absorbing kinetic energy using the adjustable 30 mm air cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X80SN with the SAI63X80SN
To replace the SI63X80SN, order the SAI63X80SN. Verify the ISO 15552 mounting interface, 63 mm bore, 80 mm stroke, G3/8 port (PT/G/NPT thread) and the -S magnet for CS1-B/DS1-B sensors. The -N denotes an NBR seal (-20 to +70 C); choose Viton H for up to 150 C. If sizing up or down, note the 50 mm bore yields 982 N push, while the 80 mm bore yields 2513 N at 0.5 MPa. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Rod material options include carbon steel, SUS420J2 or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X80SN
- ✓ 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 SI63X80SN FAQ
Yes, the AirTAC SI63X80SN is discontinued. The direct replacement is the SAI63X80SN. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 80 mm stroke, output force, G3/8 port and mounting fixtures.
The 63 mm bore provides 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. The operating speed is 30-800 mm/s, utilizing a 20 mm rod and G3/8 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X80SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X80SN replacement — usually within 7-8 hours.