Home
↩ back to overview

Stator bore e-motor housing

1. Fine boring tool

Backwards machining of the bearing seat

  • Fine boring operation in the pulling direction
  • Finished diameter incl. chamfer
  • Machining in one clamping possible
  • Short overhang length for improved rigidity

Technical data
Size: ~Ø50mm
Type: PCD insert
Vc: 500+ m/min
F: 0,07 mm/U
Ap: 0,5mm 

2. 3D-printed composite boring bar

Finishing tool (top left)

  • Light-weight construction with aluminium and composite wings (9,8 kg for Ø 200mm)
  • Stepped solutions
  • Fine presetting for tolerances up to IT6
  • Composite wings permit a modular system

Roughing tool (top right)

  • Light-weight construction with aluminium and composite wings (10,4 kg for Ø 200mm)
  • Stepped solutions
  • Incl. machining of the bearing seat
  • Composite wings permit a modular system

2. Conventional boring bar

Finishing tool (bottom left)

  • Cost-effective solution
  • Stepped solutions
  • Fine presetting for tolerances up to IT6 
  • incl. bearing seat

Roughing tool (bottom right)

  • Cost-effective solution
  • Stepped solutions
  • Incl. machining of the bearing seat

3. Special U-Axis

Finish machining of the stator bore as well as bearing seat and circlip ring groove (top)

  • Industry 4.0 Tooling with the U axis Technology
  • Z=3 for high linear feedrate
  • Includes the machining of the bearing seat and groove for the retaining circlip
  • Accurate Tolerances  as well as undercuts on the main diameter

3. U-Axis with front tool

Rough and finish machining of the stator bore in one shot (bottom)

  • Roughing and finishing in one tool
  • Stable and safe machining prcess of the main stator bore
  • Modular Construction (U-Axis, front tool, cartridge, cutting insert)
  • Main process time reduction through combination solution of roughing and finishing
learn more

4. Finish machining of the stator bore

Finish machining of the stator bore

  • Mechanically actuated tool on special machining centers
  • Finish machining of the main stator bore, bearing seat and chamfer
  • Undercuts and contour machining are possible
  • High feedrate thanks to Z=4

Cutting data for the tools

3D-printed composite boring bar (2)

Roughing tool (top left)

Tool diameter (mm) Cutting speed (m/min)
199 500
Spindle speed (rpm)
 Tooth number
800 4
Hole depth (mm) Rough bore diameter (mm)
250 195
Feed per tooth (mm/tooth) Tool weight (kg)
0,1 10,4
Feed per revolution (mm/rev) Feedrate (mm/min)
0,4 320
Feed Force (N) Main machining time (s)
1045 46,88
Torque (Nm) Spindle power (kW)
170 14

Finshing tool (top right)

Tool diameter (mm) Cutting speed (m/min)
200 500
Spindle speed (rpm)
 Tooth number
800 4
Hole depth (mm) Rough bore diameter (mm)
250 199
Feed per tooth (mm/tooth) Tool weight (kg)
0,1 9,8
Feed per revolution (mm/rev) Feedrate (mm/min)
0,4 320
Feed Force (N) Main machining time (s)
167 46,88
Torque (Nm) Spindle power (kW)
24,2 2,3

Conventional boring bar (2)

Finishing tool (bottom left)

Tool diameter (mm) Cutting speed (m/min)
221 600
Spindle speed (rpm)
 Tooth number
864 8+4
Hole depth (mm) Rough bore diameter (mm)
250 220
Feed per tooth (mm/tooth) Tool weight (kg)
0,06 29
Feed per revolution (mm/rev) Feedrate (mm/min)
0,24 207
Feed Force (N) Main machining time (s)
192 72,34
Torque (Nm) Spindle power (kW)
21,21 1,92

Roughing tool (bottom right)

Tool diameter (mm) Cutting speed (m/min)
220 500
Spindle speed (rpm)
 Tooth number
723 6+12
Hole depth (mm) Rough bore diameter (mm)
250 215
Feed per tooth (mm/tooth) Tool weight (kg)
0,2 25
Feed per revolution (mm/rev) Feedrate (mm/min)
0,24 289
Feed Force (N) Main machining time (s)
2755 51,85
Torque (Nm) Spindle power (kW)
237 17,94

Special U-Axis (3)

Tool diameter (mm) Cutting speed (m/min)
221 500
Spindle speed (rpm)
 Tooth number
720 3
Hole depth (mm) Rough bore diameter (mm)
250 220
Feed per tooth (mm/tooth) Feed per revolution (mm/rev)
0,15 0,45
Feedrate (mm/min) Feed Force (N)
324 183
Main machining time (s) Torque (Nm)
46,3 20
Spindle power (kW)  
1,52  

Actuating tool (4)

Tool diameter (mm) Cutting speed (m/min)
170 500
Spindle speed (rpm)
 Tooth number
936 4
Hole depth (mm) Rough bore diameter (mm)
250 169
Feed per tooth (mm/tooth) Tool weight (kg)
0,08 22
Feed per revolution (mm/rev) Feedrate (mm/min)
0,32 299
Feed Force (N) Main machining time (s)
141,8 50
Torque(Nm) Spindle power (kW)
12,03 1,18
back to overview