There is no space to arrange the usual Carbon brush into a small motor an external diameter is under φ10.
So it applies metal brush claded with light leaf spring.
However, this "Tiny Carbon Brush" breaked usual concept about brush shape and keeping method.
This the worls first Tiny carbon brush which can be applied to the motor external diameter under φ10(mm) was born from a new way of thinking.
Carbon Brush (Ag)
t0.65(mm) x tφ1.0(mm))
Torsional spring
(Phosphor spring)
φ0.20 (mm)
Terminal (Brass)
t0.30(mm)
Usual the tiniest
carbon brush
for φ12 motor
Bracket external diameter : φ10(mm)
Clad fork brush
Tiny Carbon brush
One of the example of replacement from Metal brush to Tiny Carbon brush
Metal brush for
φ10 motor
(Clad fork brush)
Tiny Carbon brush
for φ10 motor
Compared the life
60
Compared the noise
50
Improved the life 5 times
Decreased 10%
Noize（dB）
40
Cycle
40
20
30
20
10
0
0
Clad
fork brush
金属ﾌﾞﾗｼ
Tiny Carbon brush
超ﾏｲｸﾛｶｰﾎﾞﾝﾌﾞﾗｼ
Clad
fork brush
金属ﾌﾞﾗｼ
Tiny Carbon brush
超ﾏｲｸﾛｶｰﾎﾞﾝﾌﾞﾗｼ