Heavy-duty Integrated Cast Iron 250S Frame
Standard 250S frame exclusively for 60hp/45kW high power, integrally cast thickened cast iron with multi-piece integrated base ribs, resisting deformation and cracking under continuous impact and long-term heavy loads.
Low-loss Electromagnetic Assembly With High-purity Silicon Steel
Stator and rotor laminated by high-grade cold-rolled silicon steel with optimized magnetic circuit to reduce harmonic loss, delivering lower heat generation and quieter electromagnetic performance under full load.
Class F Full Vacuum Impregnated Windings
Stator coils adopt Class F insulation resistant to 155℃, with full vacuum varnish filling all winding gaps. It withstands moisture, cutting oil and corrosive dust to prevent partial discharge breakdown of windings.
Sufficient Starting Torque for Direct Full-load Startup
Large-capacity core reserves abundant torque, enabling direct startup of large ball mills, heavy extruders and mining hoists without idle buffer and overcurrent tripping.
Balanced Long-term Heat Dissipation for Round-the-clock Production
Integrated widened cooling ribs and large flow-guided cooling fan keep temperature rise stable during 7×24-hour continuous full-load operation at 45kW, suitable for high-load production lines of metallurgy, stone processing and chemical industry.
Flexible Replacement With Full Mounting Standards
Cast iron housing only, compatible with all national standard mounting types B3/B5/B14/B35/B34. No cutting or modification of base is needed for old heavy equipment renovation, cutting construction cost.
Q:What standard speed options are available for the 45kW 250S cast iron motor upon delivery?
A:We have 2-pole, 4-pole, 6-pole and 8-pole models in regular stock. Low-speed multi-pole variants are equipped with enlarged cooling fans to guarantee heat dissipation.
Q:Is this motor compatible with soft starters?
A:Fully compatible. Matched soft starters can greatly reduce startup inrush current and protect front power supply circuits and rear loads.
Q:What basic inspections should be carried out before restarting the motor stored for more than 3 months?
A:Check bearing lubrication condition, test winding insulation resistance with megohmmeter, and run no-load for half an hour without abnormal conditions before applying loads.
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