4PFM Series DC Electric Motors: 4PFM200, 4PFM225, 4PFM250, 4PFM280

The 4PFM series DC electric machines with shaft center heights ranging from 200 mm to 280 mm are high-performance industrial units designed to drive various general-purpose industrial regulated DC electric drive systems.

Key Applications

4PFM series DC motors are widely integrated into demanding industrial machinery, including:

• Paper-making machinery and printing equipment;
• Dyeing and finishing machines in the textile industry;
• Material handling equipment, hoists, and cranes;
• Polymer processing machinery (extruders, injection molding machines);
• Drilling rigs and auxiliary units for mining excavators.

Design Features & Operating Modes

• Duty Cycle: Continuous duty S1 (according to GOST 183). Operation in S2–S8 modes is permissible, provided that the root-mean-square (RMS) current per cycle does not exceed the rated value.
• Cooling & Protection: Type F designation indicates an enclosed design (IP23 protection rating per GOST 17494) with forced air cooling from a separate independent blower unit (IC06 cooling method). The terminal box of all models features an IP44 protection rating.
• Excitation Type: Separate excitation, rated for 110V or 220V.

Part Number Structure & Designation Key

The model code (e.g., 4PFM200SUHL4) indicates specific configuration and design parameters:

• 4P — Series designation;
• F — Protection and cooling type (IP23 enclosed, IC06 forced ventilation via independent blower);
• M — Upgraded modification of the 4P series;
• 200, 225, 250, 280 — Shaft center height (mm);
• S, M, L — Core length index (Short, Medium, Long);
• G — Integrated tachogenerator (if equipped);
• UHL4 — Climatic execution and placement category according to GOST 15150.

Technical Specifications: 4PFM Series

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