Station 01Shaft, Core & Commutator Pressing
Automatic Shaft Pressing Machine
BKD-SP-01
- Cycle time
- 3.0 s
- Positioning repeatability
- ±0.02 mm
Station 01 · 02 · 03
Shaft, Core & Commutator Pressing
The first stations of an armature line press the shaft into the laminated core, press on the end plates (insulation end caps) and press the commutator to its axial position. Concentricity and axial position set here decide how much stock the commutator turning station has to remove later, and whether the balancing station can stay within tolerance.
Bocadar builds servo-driven pressing machines with position and force monitoring so that every press is logged and out-of-tolerance parts are rejected before they consume winding wire.
Stations in this process
- Shaft pressing
- Controls: Axial position, press force
- End plate pressing
- Controls: Seating height, orientation
- Commutator pressing
- Controls: Distance to core, tang alignment
01
02
03
Machines for this step
Station 01
Station 02Shaft, Core & Commutator Pressing
Automatic End Plate Pressing Machine
BKD-EP-01
- Cycle time
- 3.2 s
- Positioning repeatability
- ±0.02 mm
Station 03Shaft, Core & Commutator Pressing
Automatic Commutator Pressing Machine
BKD-CP-01
- Cycle time
- 3.5 s
- Angular alignment
- ±0.5°
Shaft, Core & Commutator Pressing
Fully Automatic Servo Core Pressing Machine
BKD-CR-03
- Cycle time
- 2.8 s
- Stack height tolerance
- ±0.05 mm
Shaft, Core & Commutator Pressing
Automatic Core Pressing Machine
BKD-CR-01
- Cycle time
- 4.0 s
- Stack height tolerance
- ±0.06 mm
Shaft, Core & Commutator Pressing
Servo Core Pressing Machine
BKD-CR-02
- Cycle time
- 3.0 s
- Positioning repeatability
- ±0.015 mm
| Model | Cycle time | Positioning repeatability | Armature OD |
|---|---|---|---|
| Automatic Shaft Pressing MachineBKD-SP-01 | 3.0 s | ±0.02 mm | 20–60 mm |
| Automatic End Plate Pressing MachineBKD-EP-01 | 3.2 s | ±0.02 mm | 20–60 mm |
| Automatic Commutator Pressing MachineBKD-CP-01 | 3.5 s | ±0.5° | 20–60 mm |
| Fully Automatic Servo Core Pressing MachineBKD-CR-03 | 2.8 s | ±0.05 mm | 20–60 mm |
| Automatic Core Pressing MachineBKD-CR-01 | 4.0 s | ±0.06 mm | 20–50 mm |
| Servo Core Pressing MachineBKD-CR-02 | 3.0 s | ±0.015 mm | 20–55 mm |
Questions
Do the pressing machines log press force for each part?
Yes. The servo presses record a force–displacement curve for every part and compare it against a stored window; the curve can be exported as CSV or passed to an MES.
Related articles
Published 2026-09-01
How a DC motor armature is manufactured: the 9 steps
From shaft pressing to final test, what each station does, which quality figure it controls, and where scrap usually comes from.
By Chen Guoqiang
Not sure which machine?
Send the armature drawing and target output. An engineer will propose the station list.