This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX600SH, 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 SI63BX600SH
The AirTAC Airtac SI63 Standard Cylinder SI63BX600SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX600SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX600SH
- 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 SI63BX600SH
The AirTAC SI63BX600SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 63 mm bore, 600 mm stroke, G3/8 port, and an SUS304 stainless steel rod (-B). It delivers 1559 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI63BX600SH, a direct sharing the exact ISO 15552 mounting interface, stroke, output force, and port size.
The SAI upgrade introduces a two-piece Y-shaped piston seal for low start-up pressure and extended life. This specific SKU includes a high-temp Viton H seal (0-150 C) and a piston magnet (-S) for legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63BX600SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX600SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX600SH |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAI63BX600SH 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 SAI63BX600SH 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 SI63BX600SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SI63BX600SH Is Used
Long-Stroke Diversion
Ideal for pushing heavy pallets onto parallel lines over a 600 mm travel, where the 63 mm bore provides 1559 N of thrust at 0.5 MPa.
High-Temperature Forming
The Viton H seal handles up to 150 C, making it suitable for positioning parts near ovens or presses where standard NBR seals would fail.
Washdown Actuation
With the SUS304 stainless rod option, this cylinder resists corrosion in food or chemical washdown environments while maintaining precise motion.
Replacing the Airtac SI63 Standard Cylinder SI63BX600SH with the SAI63BX600SH
To replace the SI63BX600SH, order the SAI63BX600SH. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC) and the G3/8 port. This unit has the -B SUS304 rod, -S magnet, and -H Viton seal. The SAI family adds SAIL (air-lock), BSAI (clamp-lock), and SAIF (integrated valve) variants absent in the SI line. For sizing, a 63 mm bore yields 1559 N push at 0.5 MPa; dropping to a 50 mm bore gives 982 N, while an 80 mm bore provides 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. At 600 mm, prevent rod bending by guiding the load externally.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX600SH
- ✓ 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 SI63BX600SH FAQ
Yes, the SI63BX600SH is discontinued. The direct replacement is the SAI63BX600SH. It shares the identical ISO 15552 mounting interface, 63 mm bore, 600 mm stroke, G3/8 port, and force ratings, fitting directly into existing fixtures.
It features a G3/8 air port. The thrust ratings are: 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 maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX600SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX600SH replacement — usually within 7-8 hours.