STORIES IN THE MAKING
5 Advantages of Genuine WCB Rotors Over Non-OEM Rebuilds
When it comes to positive displacement (PD) pump performance, few components matter more than the rotors. Waukesha Cherry-Burrell (WCB) rotor design has set the industry benchmark for decades. Choosing genuine OEM rotors over non-OEM rebuilds will protect your process, equipment and bottom line.
1. Engineered for Precision and Efficiency
WCB rotors are designed to exacting tolerances and optimized for tight clearances to maximize volumetric efficiency while ensuring gentle, pulse-free fluid transfer in sanitary and industrial applications.
The External Circumferential Piston (ECP) design:
- Provides superior fluid sealing with minimal slip and precise metering control
- Handles low to high viscosity products with efficient, pulse-free flow
- Features arc-shaped rotors with long sealing paths for gentle handling of shear sensitive products OEM rotors will not guarantee these tolerances, risking improper fit, compromised performance, and increased shear and inefficiency.
2. Superior Alloy 88 Metallurgy with In-House Foundry Control
WCB rotors are made from Alloy 88, a proprietary non-galling nickel-based alloy produced in SPX FLOW’s own foundry. This ensures:
- Consistent metallurgical quality
- Maximum rotor life preventing seizing or galling against the pump body
- Reliability in performance; built for longevity, reducing downtime and maintenance costs
Competitor rotors often use alternative alloys or outsourced foundry production, lacking the precise material composition needed for demanding process conditions.
3. OEM Standards and Certified Repair Center Assurance
Using genuine WCB rotors will ensure:
- Compatibility with your pump model without modification
- OEM-certified clearances for optimal performance
- Access to SPX FLOW Certified Repair Center programs that rebuild your pump to “like-new” condition using genuine parts with warranty backing
Non-OEM rebuilders often replace parts with generic equivalents, jeopardizing sanitary compliance, pump performance, and damaging pump internals or reduced service life due to incorrect clearances.
4. Sustainability Through the Rotor Recycling Program
SPX FLOW’s Rotor Recycling Program offers a sustainable solution by reclaiming and recycling worn rotors back into Alloy 88 production. This reduces environmental footprint while maintaining closed-loop material consistency unmatched in the industry.
5 Advantages of Genuine WCB Rotors Over Non-OEM Rebuilds
Non-OEM rotors or rebuild centers may seem cost-effective upfront, but long-term risks include:
- Increased downtime from premature wear or failure
- Lost production due to poor pump performance
- Potential contamination or sanitary compliance issues
Genuine WCB rotors are an investment in guaranteed performance, maximum uptime and extended pump life. Reach out to your local authorized Waukesha Cherry-Burrell partner for a genuine replacement rotor for your WCB pump.