VHS Vertical Turbine Pump Motors, 150–500 HP
NEMA-standard vertical hollow shaft motors with Class C insulation and double-oil cooling, high-thrust power for deep-well irrigation, oil & gas and municipal turbine pumps, at direct-source pricing with an 18-month warranty.
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A vertical hollow shaft (VHS) motor is the vertical drive unit that mounts above and powers a vertical turbine pump, the pump’s line shaft runs up through the hollow centre, so the motor stays above the water. Dar Chang supplies NEMA-standard VHS motors from 150 to 500 HP, sourced directly from Shanghai and backed by an 18-month warranty, for the deep-well irrigation, oil & gas and water-utility markets across Saudi Arabia and the Gulf.
Where VHS Pump Motors Are Used
Across Saudi Arabia and the Gulf, VHS motors turn the vertical turbine pumps behind four core water- and fluid-moving sectors.
Agricultural irrigation
Across the farms of Qassim, Hail and the central regions, deep-well and centre-pivot systems lift groundwater with vertical turbine pumps, each driven by a VHS motor kept safely above the water. Agriculture is one of the two largest end-markets for these pumps.
Oil & gas
In the Eastern Province, vertical turbine and can-type pumps handle fluid transfer, produced water and cooling duties. VHS motors supply the torque and continuous-duty reliability these installations demand, oil & gas is the single largest end-market for vertical turbine pumps.
Municipal water & fire pumps
Raw-water intake, booster stations and NFPA-style vertical turbine fire-pump sets in Riyadh and Jeddah rely on vertical turbine pumps, and the VHS motors that turn them. Demand for vertical turbine fire pumps in particular is climbing fast.
Mining dewatering
Open-pit and underground mining operations across the Kingdom pump water out of active workings around the clock. Rugged, high-thrust VHS motors handle the dust, humidity and non-stop duty of dewatering service.
Built for 50°C with Class C Insulation
In oil & gas, mining and desert irrigation, ambient heat and around-the-clock duty punish standard motors. Our units are built specifically with Class C insulation, giving superior thermal headroom and performance stability in high-heat environments compared with the standard Class A, B or F ratings.
Motor insulation temperature classes are defined in the NEMA MG-1 motors standard and by the IEC.
Core Technical Specifications
Built to NEMA standards with custom cooling for maximum uptime.
| Feature | Details |
|---|---|
| Voltage | 380 / 660 V |
| Frequency / Phase | 60 Hz / 3-Phase |
| Operational Speed | 1750 RPM |
| Enclosure | IP23 (WP1) |
| Insulation Class | Class C (High-temp) |
| Service Factor | 1.15 |
| Cooling System | Integrated Double Oil Cooler |
| Bearing Config. | 3 Bearings (Premium TMB Brand) |
| Ambient Rating | Rated for extreme heat up to 50°C |
| Finish | Standard Blue (RAL5002) or customized |
Model Selection & Industrial Frame Sizes
A graded power range that covers everything from a mid-size well to high-thrust industrial duty:
China Sourcing & Direct-Source Value
Buyers get direct-source pricing on the same NEMA frames the established brands ship, protected by an 18-month warranty. See our technical guide to specifying & certifying a VHS motor and how to source industrial equipment from China.
Proven Origin
Direct sourcing from vetted manufacturers in Shanghai, China, with competitive lead times.
Heavy-Duty Packaging
All units ship in secure wooden crates to prevent transit damage.
18-Month Warranty
Every motor is backed by an 18-month warranty from the date of delivery.
Frequently Asked Questions
What is a VHS (vertical hollow shaft) motor?
A VHS motor is a vertical electric motor with a hollow shaft that sits above a vertical turbine or deep-well pump. The pump’s line shaft passes up through the hollow centre, so the motor drives the pump from the surface, above the water and the wellhead, where it stays cool and easy to service.
What applications and HP range do you cover?
Dar Chang supplies VHS pump motors from 150 to 500 HP for deep-well agricultural irrigation, oil & gas fluid transfer, municipal water and vertical turbine fire pumps, and mining dewatering.
Can these motors handle high-heat, high-uptime duty?
Yes. Every unit uses Class C insulation and is rated for continuous operation in ambient temperatures up to 50°C, a step above the Class F/H typical of standard motors, with double-oil cooling for high-thrust, non-stop pumping.
Where are the motors made, and what’s the warranty?
They are sourced directly from vetted manufacturers in Shanghai, China, shipped in heavy-duty wooden crates, and backed by an 18-month warranty from the date of delivery.
How does your pricing compare to established brands?
We source NEMA-standard frames (444TP–5008P) directly from Shanghai. Send your spec for a quote and lead time.
Ready to source your motors?
Send us your project specs: horsepower, frame size and application. We will come back with a quote and a delivery schedule.
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