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Magnetic Multi-pole Ring - MDR20-P44

Featured Product from Shanghai Yuanben Magnetoelectric Tech. Co., Ltd.

Magnetic Multi-pole Ring - MDR20-P44-Image

Description
MDR20-P44B magnetic drum is made of bonded multi-pole magnet;  it is used in a wide variety of speed and commutation applications such as to rotary encoders, speedometers and machine controls. Three standard grades of magnetic materials are offered to fulfill a broad spectrum of magnetic field requirements along with a high resistance to demagnetization. Combined with a Nylon polymer binder, they offer excellent dimensional control and tough environmental endurance. Multi-pole rotors can be modified to have other pole patterns, custom compounded binders, or metal inserts for specialized applications.
Features:
Rugged, chip free construction
Wide range of pole counts
Three grades of magnetic materials
High resistance to demagnetization
Operation from -40 to 125 degrees C
Well suited for general industrial environments
Aluminum hub with set screw
Data Sheet of Magnetic Drum
Dimension of magnet (mm): Dia. 32, inner dia. 24, thickness 1.6
Pole number: 44
Br (mT):240
Hcb(kA/m):175
Hcj (kA/m):228
(BH)max (MGOe):1.4
Bs (mT):69
Magnetic pole angle uniform rate:5%
Surface magnetic field uniform rate:Less 25mT
Flexural Strength (MPa):189
Flexural modulus (GPa):15.8
Tensile Strength (MPa):102
Dimension tolerances of the magnetic drum:Less 0.15mm
Shape of the position tolerances:Less 0.1mm
Dimension of Aluminum hub

Mounting Thread (axle hole)

Magnetic pole magnetic field distribution