GE GE752 User Manual

Page of 82
Vertical Drilling Motor, Type GE752, GEK–91584D
 3
TABLE 1. MODEL DIFFERENCES
Motor
Model Differences
Superseded By
752UP1
This is a shunt motor with the following distinctions:
– Has internal greasing tubes for both drive end (pinion end)
  and commutator–end bearings
– Has a double–ended shaft.
752UP2
Same as UP1 except:
– Has armored cable
– Has no grease tubes at commutator end
Motor
Model Differences
Superseded By
752UP3
Same as UP2 except:
– Has a single grease tube at drive end which is part of the
  framehead/bearing assembly for ease of armature
  disassembly.
752UP3A
Same as UP3 except:
– Has class H Kapton wrapped exciting coils
752UP4
Same as UP3A except:
– Has an ABS certified shaft.
752UP5
Same as UP3A except:
– Has a thermal sensor embedded in each of its exciting and
  commutating coils.
752UP6
Same as UP3A except:
– Has an improved commutator–end bearing assembly and an
ABS–certified armature shaft.
752US1
This is a shunt motor with the following distinctions:
– Same as UP3 except:
– Has an AG type armature with an AF commutator and
  a standard AUP flash ring.
– Has AG type commutating coils and poles with brazed 
  instead of bolted connections.
– Has air vents in the drive–end framehead
– Has a frame specially machined for mounting the 
  customer gearbox at the drive end.
– Has a different drive–end grease arrangement.
– Has rubber hardtop brushes instead of regular duplex
  brushes.
752US2
Same as US1 except:
– Has an improved commutator–end bearing assembly and an
ABS–certified armature shaft.
752AUP1
This is a series motor with the following distinctions:
– Has internal greasing tubes for both drive end and
  commutator–end bearings 
– Has a double–ended shaft.
752AUP2
Same as AUP1 except:
– Has armored cable
– Has no grease tubes at commutator end
– Mounting feet have dowel holes for vertical mounting.