Resin-encapsulated stator protects windings from burnout. No maintenance. No fluid contamination. Meets NEMA dimensional standards.
Factory-Direct NEMA Standard Encapsulated Motors
NF-P series shielded motors for multi-stage pumps. NEMA-compliant for global coupling. AISI 304 construction. Zero-pollution design. Contact our engineers for performance curves and bulk pricing.
Single Phase (220V/50Hz) & Three Phase (380V/50Hz)
Protection Class
IP68
Insulation Class
Class F
Motor Casing & Shaft
AISI 304 Stainless Steel (Optional AISI 316)
Upper & Lower Bracket
High Resistance AISI 304 Stainless Steel
Motor Construction Details
AISI 304 stainless steel shell – The casing, shaft, and brackets are made of AISI 304 stainless steel (AISI 316 available for corrosive environments). Provides rigidity and corrosion resistance.
Water-lubricated Kingsbury thrust bearings – Water-lubricated Kingsbury bearings handle axial loads from multi-stage pump ends. Enables smooth rotation and long life without maintenance.
Pressure equalizing diaphragm – Internal rubber diaphragm adjusts to volume and pressure changes from temperature variations during operation.
Sand slinger and removable lead cable – Mechanical sand slinger protects seals from abrasive particles. Removable waterproof lead cable allows field replacement.
Operating Limits & Installation
Max. Voltage Fluctuation: ±10% of rated voltage
Max. Water Temperature: 35°C max (minimum cooling flow: 0.16 m/s across motor surface)
Standard Mounting Position: Vertical or horizontal
Applications for Encapsulated Motor
Encapsulated motors meet international standards. Used in agricultural, municipal, and commercial water systems.
Rice fields and farm irrigation – Continuous water supply for large-scale irrigation. High thermal resistance.
Plant and crop watering – For automated agricultural boosting systems.
Municipal engineering – Non-polluting groundwater extraction for public water lines.
Landscape and fountains – Hydraulic power for water displays and landscape features.
Technical Support & Insights
What are the main benefits of using a canned or encapsulated motor?
A canned or encapsulated motor has a sealed metal shield (such as SS304 housing) that separates the stator windings from water. This prevents winding failures caused by moisture and eliminates oil pollution.
Why is Class F magnet wire important for your motors?
Submersible pumps run continuously under changing loads. Class F magnet wire withstands higher temperatures without degrading, reducing the risk of burnout from voltage drops or overheating.
Contact Us
0086 18783276017
info@hualuopumps.com
No. 399, Antai Street, Economic Development Zone, Neijiang City, Sichuan Province, China.
