3E

3E's machinists are professionals in the business of motor repair and related apparatus. Currently our motor repair/machine shop employs four dedicated machinists boasting 65 years of combined experience. They offer a broad knowledge of techniques for the repair of electrical and mechanical devices. Our machine shop is versatile in all types of repairs including metal and fusion spray techniques, bearing re-babbitting, shaft straightening, ultra sonic flaw testing and the repair or manufacturing of parts.

Metal Spray (Cold Process)

The metal spray process is a mechanical repair technique most commonly used to restore worn or damaged surfaces to original dimensions. Other applications include abrasive wear protection, thermal barrier protection, corrosion protection, erosion protection and friction reduction. For many years 3E's machinists have used "cold process" metal spraying for the repair of worn shafting on electric motors and related apparatus. Worn or damaged shafts can be ultra sonic tested in-house to determine the extent of fatigue and stress in the base metal. The stress could possibly lead to a premature shaft or bearing failure.

The metal spray process material is applied so that the base metal temperature does not exceed 200 degrees Fahrenheit. This method is superior to other methods because it doesn't stress the base metal as is common in regular welding.

Fusion Metal Spray (Hot Process)

The fusion spray process is the bonding of a coating alloy and a base metal. The alloy is weldable and is excellent on steels, cast iron, stainless steel and nickel alloys. The fusion process involves slowly heating the base metal to the proper temperature. The selected alloy is introduced into the flame of the torch and propelled in a semi-molten state onto the preheated part. This multi-purpose system adapts easily to the precision coating of fine edges or the coating of cylindrical or flat parts. The permanently bonded coating comes in a wide range of alloys serving as an effective protection against metal to metal friction and serves as an excellent resistance to corrosion, heat scale, galling, scoring, seizing, and abrasion. Fusion metal spray works well for broken or chipped pulleys, fans, motor parts, gear teeth, impellers, key ways, augers, die blocks and stripped shaft threads.

Bearing Housing Repair

The machining of worn bearing housings is a constant repair in the machine shop. Several methods and materials are available for different applications such as custom steel bushings, pre made stainless steel tolerance rings and metal spray. The most common process is in the use of custom steel bushings.

Steel has given 3E's customer's motors and related apparatus better heat dissipation and wearability than the common cast iron or aluminum housing often found in factory motors or specialty parts. We have limited the use of metal spray and tolerance rings to specific applications.

Remanufactured Parts

The trait of a good repair shop is its capability to remanufacture parts that are not available or repairable. With qualified machinists and a large volume of shafting and steel in stock, the machining of new shafts, parts for motors, and related apparatus is routine.

Bearing Re-Babbitting

The babbitt bearing can be found in the oldest of motors to the most precise of modern equipment. All 3E machine shop bearing repairs are made with high tin content #2 babbitt. Depending on the application, our machine shop uses repair methods such as static pouring, spin casting and puddling. Distorted or worn castings can be repaired or remanufactured then machined to original dimensions. Ultra sonic testing is performed in-house to assure proper bounding of babbitt to the casting.

In-Shop Balancing

In-shop balancing is provided to assure excellent vibration readings on rotating equipment. A wide variety of apparatus is precision balanced in 3E's shop balancer. Capable of 6,660 lbs. and up to 10' between bearing journals, apparatus such as rotors, armatures, impellers, fans, hammer mills, rollers, pulleys, and other rotating equipment are routinely precision balanced.