This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X750S, 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 SI63X750S
The AirTAC SI63 Standard Cylinder SI63X750S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 750mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X750S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X750S
- 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 SI63X750S
The AirTAC SI63X750S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 750mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X750S, a direct upgrade retaining the exact interface, M16x1.5 rod thread, and 30mm cushions.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. The SAI family also introduces SAIL and BSAI lock variants absent in the SI line.
Airtac SI63 Standard Cylinder SI63X750S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X750S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X750S |
| Bore size | Ø63 mm |
| Stroke | 750 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 SAI63X750S 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 SAI63X750S 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 SI63X750S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×750 | 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 SI63X750S Is Used
Long-Stroke Diversion
Pushes packages across a 750mm transfer belt, utilizing the 1559N force at 0.5MPa to overcome lateral friction.
Fixture Actuation
Extends clamping arms on an automated assembly line, taking advantage of the ISO 15552 mounting dimensions for easy fixture integration.
Replacing the Airtac SI63 Standard Cylinder SI63X750S with the SAI63X750S
To replace the SI63X750S, order the SAI63X750S direct. Confirm the ISO 15552 mounting interface (LB, FA, TC, etc.), the G3/8 port, and the -S magnet for CS1-B/DS1-B sensors. If you need less force, a 50mm bore yields 982N push at 0.5MPa; for more power, an 80mm bore gives 2513N. At 750mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss; for load holding, use the SAIL lock variant or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X750S
- ✓ 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 SI63X750S FAQ
Yes, the SI63X750S is discontinued. The direct replacement is the AirTAC SAI63X750S. It is dimensionally interchangeable per ISO 15552, keeping the same 63mm bore, 750mm stroke, G3/8 port, and mounting interface.
At 0.5MPa it pushes 1559N and pulls 1402N. At 0.7MPa push is 2182N, and at 0.9MPa it is 2805N. The theoretical max force is 318kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X750S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X750S replacement — usually within 7-8 hours.