This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1500FTC, 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 SI63X1500FTC
The AirTAC SI63 Standard Cylinder SI63X1500FTC 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 SAI63X1500FTC, 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 → SAI63X1500FTC
- 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 SI63X1500FTC
The AirTAC SI63X1500FTC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1500mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X1500FTC, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force, port and FTC trunnion mount.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept position sensors.
Airtac SI63 Standard Cylinder SI63X1500FTC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1500FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1500FTC |
| 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 SAI63X1500FTC 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 SAI63X1500FTC 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 SI63X1500FTC
| 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 SI63X1500FTC Is Used
Long-Stroke Material Transfer
Moves heavy pallets between machining centers using the full 1500mm travel, relying on external guides to prevent rod bending during extension.
High-Bay Pusher Arm
Actuates storage pusher arms where the 63mm bore provides sufficient force to shift inventory across wide aisle gaps.
Replacing the Airtac SI63 Standard Cylinder SI63X1500FTC with the SAI63X1500FTC
To replace the SI63X1500FTC, order the SAI63X1500FTC. Verify the ISO 15552 FTC trunnion interface, 63mm bore, 1500mm stroke, and G3/8 port. Because this SKU has no magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, select an SAI equivalent with the S suffix. Sizing checks: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 1500mm, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1500FTC
- ✓ 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 SI63X1500FTC FAQ
Yes, the SI63X1500FTC is discontinued. The direct replacement is the SAI63X1500FTC. It shares the identical ISO 15552 mounting interface, 63mm bore, 1500mm stroke, output force, G3/8 port, and FTC trunnion mounting, fitting directly into existing fixtures.
This double-acting cylinder uses a G3/8 air port. At 0.5 MPa it provides 1559 N push and 1402 N pull force. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1500FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1500FTC replacement — usually within 7-8 hours.