Mil Spec Quality for the
Oil & Gas Industry
We’re the Recognized Specialists
in Top Drive Motors, Rotary Tables,
Draw Works and Mud Pumps.
Fractional to 1500 HP AC Motors
For oil & gas operations, Ward Leonard motors and controls deliver ruggedized performance in all kinds of conditions, all around the world. Our products have to endure temperature extremes, high shock and vibration, and abuse from crews pushing performance limits.
Our DoD process control and experience with air-cooled Variable Frequency Drive (VFD) AC motors is unique, so we really know how to maximize motor performance. Our strategic acquisition of Mawdsley’s, a major competitor in the pump market, enabled us to utilize the unique features of DoD motor design in an oil & gas drilling application: 30-year life at continuous duty, shock and vibration tested, and corona/partial discharge resistant design. As a result, motor size capability extends to 1,500 HP.
We have ATEX, CSA and UL certifications, but we also look at how and where your technology will be used. For example, we develop Class H insulation systems with Class F heat rise — and ours are certified every three years by NAVSEA, the DoD authority. They are fully taped and Vacuum Pressure Injected with epoxy to meet military standards for performance under submersion. We also build to defeat specific threats to your equipment: we’ve created vermin-resistant insulation for cold climates and ant-resistant insulation for the Brazilian jungles.
You’ll find military reliability in our 2-seal system design for bearings in harsh environments. Ward Leonard uses both inboard and outboard seals on the drive and non-drive side of vertical motors, where others may just seal the drive end or only use outboard seals.
No matter what type of shaft you need, we manufacture it, including custom ends with certifications. We also take a tougher stand on materials, working with nodular cast iron and Monel to deliver low-temperature and high-shock reliability.
Your equipment will never have to endure a torpedo hit. But we’ll build it so it could. To learn more about our Oil & Gas products and services call us today or contact us online.
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International and all US states, Ward Leonard |
Exclusive Distributor Oil / Gas Industry Gulf Electroquip *All other states please call
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400, 600, 1,150 HP motors for top drives
- Designed to withstand 8G, with safety wires on all external fasteners
- ATEX-approved for ambient -35C to 50C with IP44 rating.
- First digit solids: >1 mm most wires, screws
- Second digit: liquids, splashing waters
- Air-cooled VFD motors for optimized efficiency
- High pulse endurance wire for VFD, designed to withstand 2200 V.
- Thicker leads – M262 for the mains
- Class H insulation system with Class F temp rise certified by NAVSEA.
- Inboard and outboard seal on drive and non-drive side of vertical applications/service motors, where others only use outboard or seal just drive end
For details, call (860) 283-5801 or contact us now.
1,150 to 1,500 HP for mud pumps, draw works
Acquired Mawdsley’s, for DoD motor design in oil & gas pumps:
- 30-Year life at continuous duty
- Shock and vibration tested
- Corona/partial discharge resistant design.
600 to 1,150 HP for rotary tables
Complete control house solutions
Few vendors have both the VFD motor knowledge and control system integration expertise to build complete, fully deployable control houses. We not only know the equipment; we know how to get it operational, building a drag-and-drop solution, shipped to your site by container, ready to plug into your generator and go to work.
For details, call (860) 283-5801 or contact us now.



