Vertical Motor Accessories for High Thrust Applications
This document outlines essential accessory options available for U.S. MOTORS® vertical motors, particularly those used in high thrust and deep well applications. Covering safety and performance components like Non-Reverse Ratchets, Self-Release Couplings, and multiple bearing configurations, this guide helps customers understand the engineering benefits behind these add-ons and how they enhance system reliability.
Key Points
- Non-Reverse Ratchet (NRR): Prevents shaft backspin and protects the pump system during phase reversals or shutdowns in deep well installations.
- Steady Bushings: Provide head shaft stability in HOLLOSHAFT® motors, reducing whip and maintaining vertical alignment.
- Spherical Thrust Bearings: Used when higher bearing life is needed; spring-loaded for startup protection and better performance under variable loads.
- Compatibility: Accessories are available across various frame sizes and configurations, including explosionproof and enclosed motor setups.
- Self-Release Couplings (SRC): Protects pump line-shafts from unscrewing due to reverse spin by disengaging safely under fault conditions.
- Angular Contact Thrust Bearings: Standard in high thrust ratings; capable of handling continuous thrust in one direction with potential for increased load sharing.
- Plate Bearings: Integral in handling complex load distributions in vertical motor systems.
- Field Installation Kits: Available for specific frame ranges, allowing flexible upgrades or replacements in the field.