This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX700, 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 SI63BX700
The AirTAC Airtac SI63 Standard Cylinder SI63BX700 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 SAI63BX700, 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 → SAI63BX700
- 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 SI63BX700
The AirTAC SI63BX700 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 700 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63BX700, matching the interface, force, and stroke exactly.
This SKU features a SUS304 stainless steel rod for corrosion resistance but lacks a magnet, so it cannot accept position switches. The SAI upgrade uses two Y-shaped piston seals for lower start-up pressure.
Airtac SI63 Standard Cylinder SI63BX700 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX700 |
| 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 SAI63BX700 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 SAI63BX700 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 SI63BX700
| 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 SI63BX700 Is Used
Long-Stroke Diversion
Pushes heavy pallets sideways on a packaging line using the 700 mm stroke and 1559 N force, guided externally to prevent rod bending.
Stainless Lowering Arm
Lowers materials in washdown environments relying on the SUS304 rod, handling loads up to the 79 kg vertical lift safety margin.
Fixture Actuation
Clamps large workpieces on machining fixtures where the 63 mm bore and ISO 15552 mounting provide rigid, high-force positioning.
Replacing the Airtac SI63 Standard Cylinder SI63BX700 with the SAI63BX700
To replace the SI63BX700, order the SAI63BX700. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the 63 mm bore, 700 mm stroke, G3/8 port, and M16x1.5 rod thread. Because this SKU has no -S magnet, it cannot support CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. For sizing alternatives, a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. At 700 mm, add external guides to prevent rod bending and side loads. The air cushion only decelerates; for load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX700
- ✓ 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 SI63BX700 FAQ
Yes, the SI63BX700 is discontinued. The direct replacement is the SAI63BX700. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 700 mm stroke, G3/8 port, and mounting accessories.
The G3/8 port feeds a cylinder producing 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a 318 kgf maximum at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX700
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX700 replacement — usually within 7-8 hours.