Herold & Mielenz, Inc.

Herold & Mielenz, Inc. 💙Family owned & operated since 1945
⚡️Electrical Contractors #1156516
🔧Experts in Electric Motor & Pump repairs
🇺🇸Sacramento, CA
⚙️Repair. Rewind. Sales
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The owners of HEROLD & MIELENZ, INC., didn't invent the first electric motor, but their great, great, great grandfather did! The Mielenz Family are direct descendants of Thomas Davenport, a blacksmith by trade, who is credited with developing the first commercially successful electric motor in Brandon, Vermont, n 1834. Davenport began experimenting with electromagnets in 1831 and, not long thereaf

ter, he had constructed his first electric motor. Operated by battery, that first motor was used by Davenport to propel a small car around a circular track, the first recorded instance of an electric railroad. Davenport went on to establish a workshop in New York City and also founded a publication based on electromagnetism and mechanics, printed on a press powered by the electric motor he invented. Since 1945. HEROLD & MIELENZ, INC., has worked closely with a wide variety of original equipment manufacturers, industrial plants, and processing companies, developing solutions for their drive and motor problems and servicing their equipment needs. Each Herold & Mielenz, Inc., employee is a qualified technician, educated in his field, experienced through years of work in the industry, and dedicated to applying true craftsmanship to each individual product and product application developed by the company. It is our understanding of customer needs, our attention to detail, and our reputation for standing behind our work that has made Herold & Mielenz, Inc., a driving force in our field since the mid 20th-century. When you need electric motor drive expertise, coupled with integrity, call HEROLD & MIELENZ, INC.

06/17/2026

Punch marks = your roadmap for reassembly 🛠️
Before disassembly, we mark the motor components to keep the original orientation exactly the same during assembly. This helps ensure proper alignment, balance, and performance when the motor goes back together.

06/16/2026

Rotor removal on a 125 HP electric motor ⚡️

HP: 125
Frame: 280M
Enc. TEFC
RPM: 3570
Volts: 460
MFR: Siemens

Big news for Herold & Mielenz, Inc. ⚡️We're proud to officially announce the new CEO of Herold & Mielenz the 4th William...
06/15/2026

Big news for Herold & Mielenz, Inc. ⚡️

We're proud to officially announce the new CEO of Herold & Mielenz the 4th William Mielenz to lead the company since our doors first opened.

Shortly after stepping into the CEO role, William expanded the company by bringing electrical contracting services to Herold & Mielenz, continuing our growth while staying true to the family legacy and values this shop was built on.

For generations, Herold & Mielenz has been dedicated to keeping industries running through electric motor repair, rewind, and service. Now, with the addition of electrical contracting, we're proud to offer even more solutions to our customers throughout Northern California.

Four generations. One family legacy. Still growing. ⚡️

06/14/2026

150HP Vertical after being burned and stripped of copper. Rewind of this one coming soon

06/13/2026

Removing a stuck bearing carrier with a set of bearing pullers

⚡ BIG NEWS! ⚡Herold & Mielenz, Inc. is proud to announce that we are now offering Electrical Contracting Services in add...
06/10/2026

⚡ BIG NEWS! ⚡

Herold & Mielenz, Inc. is proud to announce that we are now offering Electrical Contracting Services in addition to the electric motor sales, repair, and rewind services you’ve trusted since 1945.

From commercial and industrial electrical work to lighting solutions, service upgrades, and more, we’re ready to help power your next project.

✅ Licensed
✅ Experienced
✅ Dependable

📞 (916) 422-7493
📍 3531 51st Avenue, Sacramento, CA 95823
📄 CA Contractor License #1156516

Thank you for trusting Herold & Mielenz, Inc. for over 80 years. We look forward to serving even more of your electrical needs!

🔧 WE’RE HIRING! 🔧Herold & Mielenz, Inc. is looking for a Mechanic / Machinist to join our team!No experience? No problem...
06/09/2026

🔧 WE’RE HIRING! 🔧

Herold & Mielenz, Inc. is looking for a Mechanic / Machinist to join our team!

No experience? No problem. We’re willing to train the right person who is motivated, dependable, and eager to learn a skilled trade.

✅ Medical Insurance
✅ Dental Insurance
✅ Vision Insurance
✅ PTO
✅ IRA with 3% Match
✅ Paid Vacation
✅ Sick Leave
✅ Competitive Pay

📄 Download an application at:
www.heroldmielenz.com

📧 Send your completed application to:
[email protected]

Join a company that’s been serving industry since 1945 and build a career with a team that values hard work, craftsmanship, and growth.

06/09/2026

Fitting a test coil for a new rewind

06/02/2026

Rewind of a 10 HP electric motor ⚡️

HP: 10
FRAME: 254/6T
RPM: 1175
VOLTS: 230/460

06/01/2026

Another day another rewind ⚡️

Address

Sacramento, CA

Opening Hours

Monday 7am - 4:30pm
Tuesday 7am - 4:30pm
Wednesday 7am - 4:30pm
Thursday 7am - 4:30pm
Friday 7am - 4:30pm

Telephone

+19164227493

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