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Kollmorgen B-204-B-23
Product Introduction:
The Kollmorgen “B-xxx-B-xx” numbering is characteristic of the legacy Goldline B-series frameless permanent magnet brushless motor kits. The B-204 is the frame size (diameter/stack length group); “-B-23” specifies winding configuration, magnet grade, and stack length variant. These are frameless kits — rotor (magnet ring + hub) and stator (wound laminations + leads) only — intended to be built into a machine’s own structure (bearing set, housing provided by machine designer).
Detailed content
Typical Characteristics (Goldline B-series frameless):
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Construction: Slotless or slotted stator with epoxy-overcoated windings; rare-earth (SmCo or NdFeB) magnet rotor
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Torque Range (B-204 family): Typically several Nm continuous, higher peak
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Voltage Constant (Ke): Winding-dependent (B-23 suffix defines Ke, resistance, inductance)
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Material: Stator laminations — silicon steel; rotor — stainless steel hub + bonded magnets; encapsulation — high-temp epoxy (Class H possible)
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Operating Temp: −20 … +85 °C (typical, depends on winding)
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Feedback: Not included — must be specified separately (resolver or encoder mounted on load)
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Mounting: Bolt circle on stator O.D.; rotor I.D. fits customer-supplied shaft
Application Notes: Used in gimbal systems, antenna pedestals, direct-drive turrets, aerospace actuators, custom-built rotary stages. Requires external bearings and housing. Must be paired with a compatible servo drive sized for the winding’s current/voltage.
