Vertical Hollow Shaft

Vertical Hollow Shaft (VHS) motors deliver reliable, energy-efficient performance with high thrust capacity and easy pump coupling—ideal for demanding vertical pumping applications.

Built for Reliability and Easy Maintenance in Vertical Pumping

Vertical Hollow Shaft (VHS) motors feature a hollow shaft with a coupling located at the top, allowing easy access to the pump impeller for simplified maintenance without disturbing the pump shaft. This design minimizes downtime and enhances serviceability in demanding vertical pumping applications.

Technical data

Vertical Hollow Shaft (VHS) motors are high-thrust, inverter-duty motors built to NEMA MG1 Part 31 standards for reliable performance in deep well and vertical pump applications.

Up to 500 hp

Power range 15 – 500Hp (11 – 372kW)

Frame size 5008

NEMA frame 254TP to 5008P

Machined for 175%

extra high thrust capacity on 360 frames and above

Insulation Class F

Class B rise at full load

Meets NEMA Premium

efficiency requirements

Frequency 60Hz

as standard, 50Hz optional

Explore the key features and benefits

VHS motors offer high thrust capacity, easy top-coupling access for maintenance, inverter-duty reliability, and durable performance in challenging vertical pump applications.

Fit for purpose

Engineered specifically for vertical mounting and high thrust demands, these motors are ideal for deep well and vertical turbine pump applications.

Inverter Duty

Suitable for inverter use per NEMA MG1 Part 31.4.4.2

Bearings

High-thrust bearings are designed to handle heavy axial loads, ensuring stable, long-lasting performance in vertical pump applications.

Reliability

High thrust capacity and smooth power transmission ensure reliable operation with the pump impeller in demanding vertical applications.

Energy Efficient

VHS motors are built to meet NEMA Premium® efficiency standards, delivering energy savings, improved performance, and reduced operating costs.

Safety

Vertical lifting provisions allow for easy installation, while the lightweight top cover provides quick access to the coupling for simplified maintenance.

Durable

Severe duty construction for harsh environments

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