Starter Motor Magnets, Permanent-magnet Starter Motor (Automobile), electric motor magnets, starter motor of rare earth neodymium, smco and ferrite permanent magnet field type, Unique Motor Permanent Magnets

Starter Motor Magnets Specification:

1, Chemical composition: Nd2Fe14B.
Neodymium magnets are hard, brittle and easily corrode.
2, Moderate temperature stability
Neodymium magnets lose -0.09 ~ -0.13% of Br/°C.
Their working stability is under 80°C for low Hci Neodymium magnets and above 200°C for high Hci Neodymium magnets.
3, Excellent strength value
High magnetic performance (Br: 11,000 to 14,500 GS, Hcj: 11,000 to 30,000 Oe, BHmax: 35 to 50 MGOe)
4, Advanced Technology
The choice of Strip casting and HDDR technology in our factory allows us to make high performance Neodymium Magnets of N52 possible. The standard properties, N33, N35, N38, N40, N42, N48, N50, N52 (M, H, SH, EH, UH)
5, Extremely resistance to demagnetization
The intrinsic coercive force is over 30,000 Oe, like N35EH and N38EH property. Maximum working temperature: 80 to 200 centigrade. Super strong magnetic force and high intrinsic coercive force and also with precise tolerance
6, Effective surface treatment
Surface treatments have been developed that allow them to be used in most applications. The treatments include Ni, Ni-Cu-Ni, Zn, Ag, Au and other special plating. They are good at anticorrosion.

Starter Motor Types

Starter motor:
the field coils consist of soft iron pole shoes with heavy conductors wound around them.
*current flows through the windings to produce a magnetic field. the pole shoes indensity the strengh of the magnetic field.
*the armature is a group of conductors that are mounted around an iron core in a cyclindrical manner and are supported on a central pivot.
*brushes: supply the postive (battery) supply and the negative (earth) to the conductor.
*starter drives “the pinion gear is driven by the armature.” & “the ring gear is attached to the flywheel of the engine.”
* one way clutch a.–“the purposes of the one way clutch are”
1. to allow the starter motor to turn the engine.
2. to prevent the engine turning the starter motor. “if the pinion is driven in the direction of the arrow, the one way clutch will release allowing the pinion.”

Starter Motor Magnets

Starter Motor Magnets

STARTER TYPES ARE THREE “with light vehicles only.” there are some other starter motors but for the heavy duties like bulldozer.
1. INERTIA.
2. PRE-ENGAGED.
3. GEAR REDUCTION.

Starter Motor components & their functions:

Armature

The armature is an electromagnet, mounted on the drive shaft and bearings for support. It is a laminated soft iron core which is wrapped with numerous conductors loops or windings.

Commutator

The commutator is a section of the shaft at the rear of the housing on which the brushes run to conduct electricity. The commutator is made up of two plates attached to the axle of the armature. These plates provide the two connections for the coil of the electromagnet.

Brushes

The brushes run on a section of the commutator at the rear of the housing, making contact with the contacts of the commutator and conducting electricity.

Solenoid

The solenoid contains of two coils of wire that are wrapped around a moveable core. The solenoid acts as a switch to close the electrical connection and connects the starter motor to the vehicle’s battery.

Plunger

The plunger works by using the connected vehicle battery and the solenoid to push the plunger forward, which engages the pinion.

Lever Fork

The lever fork is connected to the plunger so when the plunger is pushed forwards, so is the lever fork. This process then activates the pinion.

Pinion

The pinion is a unique combination of a gear and springs. Once the starter is engaged the gear is extended into the gearbox housing and is engaged with the flywheel. This spins the engine to begin the combustion process.

Field Coils

The housing holds the starter fields in the housing with screws. This can consist of two to four field coils connected in series. Energised by the battery this converts the coils into an electromagnet which then turns the armature. When the armature coils are powered a magnetic field is created around the armature.