Selection Criteria
Motor diameter
Sizing a brush DC motor to a specific application begins with matching the motor's diameter to the available space. In general, larger frame size motors deliver more torque. Motor diameter ranges from 8 mm to 35 mm.
Length
Various lengths are available, ranging from 16.6 mm to 67.2 mm, to best fit the application package requirements.
Commutation type
Precious metal brushes are well adapted to low current density applications, providing low friction and high efficiency, whereas high continuous or peak current applications will require graphite-copper brushes.
Bearing type
Several bearing combinations have been designed, from simple sleeve bearing construction to preloaded ball bearings systems for high axial or radial load applications.
Magnet and commutation type
Adapt your motor selection to the power and current needs of your application: NdFeB magnets provide higher output torque than Alnico, at a higher cost. The commutation system (type and size of the commutators) is also reflected in this coding.
Winding
Various winding options are proposed to best match with the application requirements – voltage, resistance and torque constant are the basic parameters for selection.
Execution code
Used to specify standard and customizations.
| Brush DC | ||
| 35 N T 2R 82 426E 50 | ||
| 35 | Diameter | |
| N | Motor generation / length L,C = Old generation (C-short, L-long) S, N, V = Middle generation (S-short, N-normal, V-very long) G, GS = New generation, high power magnet (S-short version) |
|
| T | Commutation type Blank = precious metal T = graphite |
|
| 2R | Bearing type Blank = With sleeve bearings 1R = Front ball bearing, rear sleeve bearing 2R = Front and rear ball bearings |
|
| 82 | Magnet type / Commutation size & type 11, 18, 21, 28, 48, 58 = Alnico / Precious metal 12 = Alnico / Graphite-Copper 61, 78, 88, 98 = NdFeB / Precious Metal 82, 83 = NdFeB / Graphite-Copper |
|
| 426E | Coil type | |
| 50 | Execution code | |