Cantilever

The cantilever of a record cartridge, like the stylus itself, is an important part of the vibration system and necessary in order to transmit the vibrations accurately from the record to the stylus..

A variety of materials such as aluminum, sapphire, beryllium and boron are used to make cantilevers of different shapes and dimensions. The lighter and stiffer the material, the better and more accurately the cantilever can transmit vibration.
In today’s high-end cartridges, precision is also required for the materials, processing, and assembly of magnetic circuit parts as well as the suspension mechanism connected to the cantilever.

Cantilever types and features

 

Aluminum Pipe

Aluminium has a low relative density, and the stylus tip is press-fit, so it picks up the groove vibrations with a stable and accurate trace performance.

OD : φ0.5 ±0.02
ID : φ0.4 ±0.02
OD : φ0.6 ±0.02
ID : φ0.5 ±0.02
L  : 6.0 ±0.2
 

Boron Rod

Large elastic modulus, high specific rigidity, and speedy sound transmission. The tip is fixed with adhesive due to fragility and limits in processability. Cost performance is outstanding.

OD : φ0.28 ±0.02
L  : 6.0 ±0.2  
 

Zirconia Pipe

Because the material's relative density is comparatively high at 6.0, we make full use of our technology to process it into a pipe shape. This cantilever plays a charming sound that is different from other materials.

OD : φ0.3 ±0.02
ID : φ0.2 ±0.02
L  : 5.0 ±0.2  
Surface finish: Grinding
 

Sapphire Rod

Because the sapphire cantilever is very rigid, it accurately transmits the vibration of the stylus tip and, compared to metal cantilevers, a clearer sound can be enjoyed.

OD : φ0.3 ±0.02
L  : 6.0 ±0.2  
Surface finish: Grinding
 

Ruby Rod

When part of Al3+, the main component of sapphire, is replaced with chromium, the jewel reflects the red color that makes it a ruby. While ruby is similar to sapphire in terms of characteristics, it is also used for its visual aesthetic.

OD : φ0.3 ±0.02
L  : 5.5 ±0.2  
Surface finish: Grinding
 

Diamond Rod

Diamond, the hardest material on earth, is possibly the best material for use in audio equipment. It does not easily deform when force is applied, and the sound transmission speed is overwhelmingly faster than other materials. When playing a record, the stylus tip/cantilever traces the groove with great precision.

OD : 0.22 ±0.01
L  : 5.0 ±0.2  
Surface finish: Grinding

Physical properties

  
E Young's Modulus ρ DensityC=√E/ρ Sound Speed Mohs Hardness
Boron 656 2.41 16,200 9.3
Diamond 1,050 3.5 18,000 10
Aluminum 68 2.69 6,320 2.7
Sapphire 470 3.97 11,180 9
Ruby 372 4.00 11,180 9
Zirconia 200 6.05 4,650
7,060
6

Aluminum pipe cantilever specifications

Boron cantilever specifications

Sapphire / Ruby cantilever specifications

Diamond cantilever specifications

Zirconia cantilever specifications

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