Hook type with reinforced rings

Thousands of specifications to meet your extensive application needs

Hook type
with reinforced rings

Raw material
  • Commutator bars : copper
  • Insulation between bars: mica
  • Moulding compound: phenolic
  • Reiforced rings: steel or fiber glass
  • Bushings: Brass,steel metal material

Specifications

Chief techical parameters

Name of the parameter Specifications of commutator Technical parameter
Overspeed test O.D less than 25.5mm ROOM temperature:44000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.007mm
Heating 250℃44000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.007mm
O.D 25.5mm-28.5mm ROOM temperature:44000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.007mm
Heating 250℃38000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.007mm
O.D 28.5mm-32.5mm ROOM temperature:37000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.010mm
Heating 250℃35000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.010mm
O.D 32.5mm-38.5mm ROOM temperature:34000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.010mm
Heating 250℃32000RPM,after 10min ,running ,deviation between segments≤0.003,O.D change≤0.010mm
Insulation withstanding test Various specification Room temperature: between shaft hole and commutator segment≥150MΩ
Heating:140℃ within 1h , between shaft hole and commutator segment≥100MΩ
I.D tolerance of commutator Various specification With bushing H7 Without bushing H8
Inclination of commutator segment Various specification □≤1/3Nominal insulating thickness between the segment of coummtator
AC frequency Various specification 50HZ 60HZ

Note:

  1. The volage-withstanding test’s date between the shaft and the segment of commutator and between the segments depends on the different motor application and different customers’ requirements.
  2. Negotiation may be taken if customers have other special requirements to the above date in the table.