This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1500STC, 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 SI63X1500STC
The AirTAC Airtac SI63 Standard Cylinder SI63X1500STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1500STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1500STC
- 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 SI63X1500STC
The AirTAC SI63X1500STC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1500mm stroke, delivering 1559N push force at 0.5MPa via a G3/8 port. It is replaced by the SAI63X1500STC, a direct upgrade sharing the same TC trunnion mount, M16x1.5 rod thread, and dimensions.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. The SAI family adds SAIL, SAIF, and BSAI variants. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1500STC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1500STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1500STC |
| Bore size | Ø63 mm |
| Stroke | 1500 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 SAI63X1500STC 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 SAI63X1500STC 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 SI63X1500STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1500 | 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 SI63X1500STC Is Used
Long-Stroke Transfer
Drives large pallets 1500mm down an assembly line, using the 1559N thrust to push heavy fixtures between robotic cells.
High-Bay Extraction
Extends deep into storage racks to pull 79kg vertical loads, requiring external linear guides to prevent rod bending.
Large Press Feeding
Feeds heavy sheet metal blanks into a hydraulic press, relying on adjustable end cushions to decelerate the 63mm bore.
Replacing the Airtac SI63 Standard Cylinder SI63X1500STC with the SAI63X1500STC
To replace the SI63X1500STC, order the SAI63X1500STC. Verify the ISO 15552 TC trunnion mount, 63mm bore, 1500mm stroke, G3/8 port, and -S magnet for CS1-B/DS1-B switches. For sizing, a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. At 1500mm, prevent rod bending by using an external guide to manage side loads. The plain cylinder drifts without air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1500STC
- ✓ 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 SI63X1500STC FAQ
Yes, the SI63X1500STC is discontinued. The direct replacement is the SAI63X1500STC. It shares the same ISO 15552 TC mounting interface, 63mm bore, 1500mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
This 63mm bore cylinder uses a G3/8 port. At 0.5MPa it provides 1559N push and 1402N pull force. At 0.7MPa push is 2182N, and at 0.9MPa it is 2805N. The theoretical maximum force is 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1500STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1500STC replacement — usually within 7-8 hours.