This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1500, 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 SI63X1500
The AirTAC Airtac SI63 Standard Cylinder SI63X1500 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 SAI63X1500, 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 → SAI63X1500
- 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 SI63X1500
The AirTAC SI63X1500 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1500 mm stroke, delivering 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63X1500, matching the exact bore, stroke, force, port and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. For sensing, this specific no-S SKU cannot take a magnetic switch.
Airtac SI63 Standard Cylinder SI63X1500 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1500 |
| 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 SAI63X1500 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 SAI63X1500 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 SI63X1500
| 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 SI63X1500 Is Used
Long-Stroke Material Transfer
Pushes workpieces between machining stations over a 1500 mm span, utilizing the 1559 N thrust at 0.5 MPa to move heavy jigs along an assembly conveyor.
Pallet Pusher Actuation
Indexes loaded pallets into a wrapping zone, relying on the 63 mm bore's 2182 N output at 0.7 MPa to overcome initial friction without stalling.
Vertical Platform Lowering
Drives a 79 kg vertical lift load through a 1500 mm descent, requiring external guidance to prevent rod bending during the extended travel.
Replacing the Airtac SI63 Standard Cylinder SI63X1500 with the SAI63X1500
To replace the SI63X1500, order the SAI63X1500 and verify the ISO 15552 mounting interface, G3/8 port, M16x1.5 rod thread and 1500 mm stroke. Sizing both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. At 1500 mm, prevent rod bending by using an external guide to manage side loads. This plain cylinder lacks a magnet so it cannot take a CS1-B/DS1-B sensor. For load holding on air loss, the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1500
- ✓ 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 SI63X1500 FAQ
Yes, the SI63X1500 is discontinued. The direct replacement is the AirTAC SAI63X1500. It shares the same ISO 15552 mounting interface, 63 mm bore, 1500 mm stroke, output force, G3/8 port, and accessories, fitting directly into existing fixtures.
The 63 mm bore uses a G3/8 port. Force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1500
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1500 replacement — usually within 7-8 hours.