This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X700LB, 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 SI63X700LB
The AirTAC Airtac SI63 Standard Cylinder SI63X700LB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X700LB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X700LB
- 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 SI63X700LB
The AirTAC SI63X700LB is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 700 mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63X700LB. This direct successor matches the original bore, stroke, force, port, and LB foot mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet (-S) and cannot take a sensor.
Airtac SI63 Standard Cylinder SI63X700LB Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X700LB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X700LB |
| Bore size | Ø63 mm |
| Stroke | 700 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 SAI63X700LB 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 SAI63X700LB 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 SI63X700LB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×700 | 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 SI63X700LB Is Used
Long-Stroke Diversion
Pushes packages across transfer lines using the 700 mm stroke, relying on the 1559 N thrust to overcome lateral friction.
Pallet Handling Gate
Actuates large access gates on pallet conveyors, requiring the LB foot mount to secure the long body against torque.
Replacing the Airtac SI63 Standard Cylinder SI63X700LB with the SAI63X700LB
To replace the SI63X700LB, order the SAI63X700LB. Verify the ISO 15552 LB foot mounting, 63 mm bore, 700 mm stroke, and G3/8 port (PT/G/NPT thread options). This non-magnet SKU cannot accept a CS1-B/DS1-B sensor. For sizing, neighboring bores offer 982 N (50 mm) or 2513 N (80 mm) push at 0.5 MPa. Because stroke is 700 mm, use external guides to prevent rod bending and side loads. The air cushion only decelerates; it does not hold load. For load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X700LB
- ✓ 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 SI63X700LB FAQ
Yes, the SI63X700LB is discontinued. The direct replacement is the SAI63X700LB. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 700 mm stroke, 1559 N force, G3/8 port, and LB foot mounting.
This double-acting cylinder has a G3/8 port. It delivers 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 SAI63X700LB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X700LB replacement — usually within 7-8 hours.