Name of the parameter

specifications of commutator

Technical parameters

Over speed test

0.D.25.5mm below

Room temperature: 44000RPM, After10min, run- ning, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.007mm

Heating: 250 ℃ 44000RPM, After10min, running, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.007mm

0.D

Φ 25.5mm~

Φ 28.5mm

Room temperature: 44000RPM, After10min, run- ning, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.007mm

Heating: 250 ℃ C38000RPM, After10min, running, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.007mm

0.D

Φ 28.5mm~

Φ 32.5mm

Room temperature: 37000RPM, After10min, runni- ng, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.010mm

Heating: 250 ℃ 35000RPM, After10min, running, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.010mm

0.D

Φ 32.5mm~

Φ 38.5mm

Room temperature: 34000RPM, After10min, runni- ng, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.010mm

Heating: 250 ℃ 32000RPM, After10min, running, deviation between segments ≤ 0.003 mm, O. D. change ≤ 0.010mm

Insulation

Withstanding test

Various

specification

Room temperature: between shaft hole and commutator segment ≥ 150M Ω

Heating: 140 ℃ within 1h, between shaft hole and commutator segment ≥ 100M Ω

I ． D ． precision of com- mutator

Various

specification

with busing: H7

without busing: H8

Inclination of commuta- tor segment

Various

specification

≤ 1/3 Nominal insulating thickness between the segment of commutator

Ac frequency

Various

specification

50Hz 60Hz