This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1296, 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 SI63X1296
The AirTAC Airtac SI63 Standard Cylinder SI63X1296 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1296mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1296, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1296 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1296
- 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 SI63X1296
The AirTAC SI63X1296 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1296 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X1296, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1296 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1296 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1296 |
| Bore size | Ø63 mm |
| Stroke | 1296 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 SAI63X1296 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 SAI63X1296 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 SI63X1296
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1296 | 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 SI63X1296 Is Used
Long-Stroke Material Push
Uses the full 1296 mm travel to transfer heavy workpieces between conveyor lines, relying on the 1559 N push force at 0.5 MPa to overcome friction.
Pallet Discharge Gate
Actuates large diverter gates in packaging hubs where the 63 mm bore and G3/8 port provide sufficient volume to shift loads quickly.
Elevator Platform Lowering
Drives vertical descent mechanisms where the 79 kg safe vertical lift capacity handles weighted platforms smoothly before external locking engages.
Replacing the Airtac SI63 Standard Cylinder SI63X1296 with the SAI63X1296
To replace the SI63X1296, order the SAI63X1296. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC) and the G3/8 port match your fixture. Because this is a no-S SKU, it cannot take a magnetic switch; order a magnet-equipped SAI if sensing is needed. At 0.5 MPa the 63 mm bore yields 1559 N push; if undersized, the 80 mm bore provides 2513 N. For the 1296 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding use the SAIL lock, BSAI clamp-lock, or a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1296
- ✓ 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 SI63X1296 FAQ
Yes, the SI63X1296 is discontinued. The direct replacement is the AirTAC SAI63X1296. It shares the identical ISO 15552 mounting interface, 63 mm bore, 1296 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 63 mm bore uses a G3/8 port. It generates 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 max of 318 kgf at 1.0 MPa. The rod is Ø20 mm with an M16x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1296
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1296 replacement — usually within 7-8 hours.