This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X330, 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 SI63X330
The AirTAC Airtac SI63 Standard Cylinder SI63X330 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 330mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X330, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke330 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X330
- 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 SI63X330
The AirTAC SI63X330 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 330mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa, utilizing a G3/8 port. AirTAC replaced this legacy unit with the SAI63X330, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU lacks the -S magnet, so it cannot accept CS1-B/DS1-B sensors. For high-temperature environments up to 150C, Viton H seals are available.
Airtac SI63 Standard Cylinder SI63X330 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X330 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X330 |
| Bore size | Ø63 mm |
| Stroke | 330 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 SAI63X330 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 SAI63X330 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 SI63X330
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×330 | 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 SI63X330 Is Used
Conveyor Diversion
Pushes packages off a main belt using its 1559N push force at 0.5MPa, with the 330mm stroke reaching across lane widths.
Vertical Pressing
Applies downward clamping pressure up to 2182N at 0.7MPa, safely holding workpieces during machining operations.
Pallet Handling
Extends 330mm to index pallets along a roller conveyor, utilizing the robust 63mm bore for heavy-duty cycling.
Replacing the Airtac SI63 Standard Cylinder SI63X330 with the SAI63X330
To replace the SI63X330, order the SAI63X330 direct equivalent, confirming the ISO 15552 mounting interface, 63mm bore, 330mm stroke, G3/8 port (PT/G/NPT thread options), and your mounting accessory (LB, FA, CA, TC). Because this SKU has no -S magnet, it cannot support position sensing; if switches are needed, order the -S variant. Sizing both ways: a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. At 330mm, this long stroke requires external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X330
- ✓ 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 SI63X330 FAQ
Yes, the SI63X330 is discontinued. The direct replacement is the AirTAC SAI63X330. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 330mm stroke, output force, G3/8 port, and mounting accessories, so it fits existing fixtures directly.
The 63mm bore features a G3/8 air port. It generates 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical maximum of 318kgf at 1.0MPa. The piston rod is 20mm with an M16x1.5 thread.
Request a Quote for the SAI63X330
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X330 replacement — usually within 7-8 hours.