Upgrades & Repairs

There are numerous opportunities available for upgrades and repairs for Submersible Motors, including:

Stator Rewind

To extend motor life, we can rewind the stator of your existing submersible motor. We use the latest winding cable material (XLPE) to ensure homogeneity of the insulation system, and improve reliability, compactness, and performance. Our cable restraining method reduces movement and fretting of insulation, for increased reliability.

• Re-rate Motor: Power upgrades available
• VFD Upgrades: Available to allow compatibility with a variable frequency drive
• Concentric or Basket Wind: Redesigned stator windings for higher motor efficiency, less winding cable, and lower stator copper loss

Stator Restack

For performance optimization, we restack electrical steel laminations in existing motors with new electrical steel. This returns the stator to its original design and maximizes motor efficiency. During this process, we make sure the motor case/stator shell is parallel and concentric, to ensure the bearings are aligned.

Rotor Restack

We can restack your existing rotor with new electrical steel laminations, short circuit rings, rotor bars, and balance rings. This returns the rotor electrical performance back to the original design. If there is a site need for performance change, we can modify the rotor design, including changing starting torque.

Material Upgrades

We use Super Duplex to the highest international standards, including PREN40/42 where specified, for extremely high resistance to corrosion. Bearing housing upgrades to NiAlBr provide greater thermal stability during operation.

Radial Bearing Upgrades

We can upgrade your radial journal bearing to HT hydrodynamic tilt pad bearings. Benefits include:

• Most stable design against bearing instability
• Reduces friction losses
• Increases efficiency
• Improves cooling
• Lowers starting torque

We offer hardened rotor sleeves (where applicable) to protect wearing the shaft, and the most up-to-date bearing materials for improved life.

Our bearing materials are lab tested for proven longevity. We frequently perform research to provide the best reliability in radial bearing materials for pumps and motors.

Thrust Bearing Upgrades

We can replace and rebuild your entire thrust bearing, including thrust pads, seat, and thrust disc, and we offer upgrades to the latest bearing materials for increased MTBF and improved reliability. Inclusion of double thrust accommodates unexpected reverse loads. Our thrust disc acts as an impeller to improve cooling flow through the motor.

See how we can upgrade your thrust bearing to match your operating regime.

Internal Joints

Our pressure retaining glands are designed for the cable exit area to ensure mechanical integrity and safety of the gland exit. We use:

• HT XLPE injected molded joint is a high-voltage, high-integrity joint formed around a mechanical ferrule that is tested via X-ray
• Qualified, proven, proprietary jointing technology — a reliable long-life joint solution

Mechanical Seal                                                                 

Our highest-quality mechanical seal features a cartridge design that is built as a fixed component, interfacing as one with the shaft, and is an intrinsic fit to the motor. This provides an 8+ year lifespan to the mechanical seal.

Header Tank

A header tank can be retrofitted to replace your standard diaphragm system. This prevents seawater ingress to the pump and motor while providing a visual indication of any leaks.

We offer several opportunities for Boiler Circulating Pump upgrades and repairs for our own equipment along with other brands including Westinghouse, Torishima, General Electric (GE), Ingersoll Rand, KSB and Fuji.

Stator Rewind

To extend motor life, we can rewind the stator of your existing boiler circulating pump. We use the latest winding cable material (XLPE) to ensure homogeneity of the insulation system, and improve reliability, compactness, and performance. Our cable restraining method reduces movement and fretting of insulation, for increased reliability.

• Re-rate Motor: Power upgrades available
• VFD Upgrades: Available to allow compatibility with a variable frequency drive
• Concentric or Basket Wind: Redesigned stator windings for higher motor efficiency, less winding cable, and lower stator copper loss

Stator Restack

For performance optimization, we restack electrical steel laminations in existing motors with new electrical steel. This returns the stator to its original design and maximizes motor efficiency. During this process, we make sure the motor case/stator shell is parallel and concentric, to ensure the bearings are aligned.

Rotor Restack

We can restack your existing rotor with new electrical steel laminations, short circuit rings, rotor bars, and balance rings. This returns the rotor electrical performance back to the original design. If there is a site need for performance change, we can modify the rotor design, including changing starting torque.

Thrust Bearing Upgrades

We can replace and rebuild your entire thrust bearing, including thrust pads, seat, and thrust disc, and we offer upgrades to the latest bearing materials for increased MTBF and improved reliability. The inclusion of double thrust accommodates unexpected reverse loads. Our thrust disc acts as an impeller to improve cooling flow through the motor.

See how we can upgrade your thrust bearing to match your operating regime.

Radial Bearing

To extend the operational life of your radial bearings, we can rebuild and upgrade your existing bearings. We offer hardened rotor sleeves (where applicable) to protect wearing of the shaft, and the most up-to-date bearing materials to improve lubrication at the bearing face, for longer life and improved performance.

Our bearing materials are lab tested for proven longevity. We frequently perform research to provide the best reliability in radial bearing materials for pumps and motors.

There are a few opportunities to upgrade and repair Nuclear Pumps, including:

Wear Rings

Wear rings on pump impellers and cases should be replaced during repairs and overhauls. New wear rings ensure there are the proper clearances with mating rings to maintain the pump’s performance, efficiency, and proper bearing loading, which will result in longer bearing and sleeve life. Severely worn wear rings are generally a result of the pump’s bearings having excessive wear or failed. As the OEM, Hayward Tyler can ensure that proper materials are used in manufacturing new wear rings, in order to achieve the designed intent.

Shaft Sleeves

Upgrading shaft sleeves to our chrome-plated sleeves or hardened material sleeves will help increase pump run time. These hardened shaft sleeves, along with upgraded bearing material, will ensure that your pump’s operation between outages is maintained at the optimum level. If the pump is operating in harsh conditions, these upgrades will also increase longevity. These sleeve upgrades are a small part of our continued focus on increasing the quality and life of Hayward Tyler pumps.

Radial Bearings

To extend the operational life of your radial bearings, we can rebuild and upgrade your existing bearings. We offer hardened rotor sleeves (where applicable) to protect wearing of the shaft, and the most up-to-date bearing materials to improve lubrication at the bearing face, for longer life and improved performance.

Our bearing materials are lab tested for proven longevity. We frequently perform research to provide the best reliability in radial bearing materials for pumps and motors.