This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX150H, 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 SI63BX150H
The AirTAC Airtac SI63 Standard Cylinder SI63BX150H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX150H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX150H
- 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 SI63BX150H
The AirTAC SI63BX150H is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 150mm stroke. It features a SUS304 stainless steel rod (-B) and a Viton H high-temperature seal (-H) rated for 0 to 150 C. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, its direct replacement is the current-production SAI63BX150H, which shares the exact interface, force, and mounting dimensions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note this SKU lacks a magnet (-S) and cannot support CS1-B/DS1-B sensors. The family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy line.
Airtac SI63 Standard Cylinder SI63BX150H Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX150H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX150H |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAI63BX150H 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 SAI63BX150H 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 SI63BX150H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SI63BX150H Is Used
High-Temp Forming Press
Actuating tooling in heated environments where the Viton H seal (0-150 C) and SUS304 rod resist thermal degradation and corrosion.
Washdown Diverters
Routing products on stainless steel processing lines, leveraging the SUS304 piston rod for moisture and chemical resistance.
Replacing the Airtac SI63 Standard Cylinder SI63BX150H with the SAI63BX150H
To replace the SI63BX150H, order the SAI63BX150H. Verify the ISO 15552 mounting interface, 63mm bore, 150mm stroke, G3/8 port, and your specific mounting accessory. Retain the -B SUS304 rod and -H Viton seal options. Because this SKU lacks a magnet, it cannot accept position switches; order an -S suffix if sensing is needed. Sizing checks: a 50mm bore yields 982 N push @0.5 MPa, while an 80mm bore yields 2513 N. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The 150mm stroke is under the 300mm side-load risk threshold, but always guide the load to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX150H
- ✓ 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 SI63BX150H FAQ
Yes, the SI63BX150H is discontinued. The direct replacement is the SAI63BX150H. It is dimensionally interchangeable per ISO 15552, maintaining the same bore, stroke, force, G3/8 port, and mounting interface for a seamless fixture swap.
The 63mm bore features 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 maximum of 318 kgf at 1.0 MPa. It operates at speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX150H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX150H replacement — usually within 7-8 hours.