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Horizontal Boring Mill Operator Jobs in California

Sulzer AG

Manual Machinist

Pasadena, CA · On-site

$24 - $32.50/hr

ID / OD Grinders, Turret Lathe, Engine Lathe, Horizontal Boring Mill, Vertical Boring Mill, Radial Drill, Planer Mill * Four years of experience in machine shop operations * Willingness to work in a ...

VERUS AEROSPACE FINANCE INC

Mill Operator

Anaheim, CA · On-site

$20 - $25/hr

Position Summary The Mill Operator will operate manual industrial equipment to manufacture and ... hinge line boring, etc. * Set up, adjust, and operate all of the basic machine tools and many ...

VERUS AEROSPACE FINANCE INC

Mill Operator

Anaheim, CA · On-site

$20 - $25/hr

Position Summary The Mill Operator will operate manual industrial equipment to manufacture and ... hinge line boring, etc. * Set up, adjust, and operate all of the basic machine tools and many ...

Sulzer AG

Manual Lathe Machinist 3 Axis

Orange, CA

$23.25 - $31/hr

D. Grinder, Turret Lathe, Engine Lathe, Knee Mill, Radial Drill, Horizontal Boring Mill, Vertical Boring Mill, and Planer Mill Ability to perform with a minimum of direct supervision Working ...

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Horizontal Boring Mill Operator information

What is a horizontal boring mill operator?

Horizontal Boring Mill Operators are skilled machinists who set up, operate, and maintain horizontal boring mills—a type of large industrial machine used to bore holes or enlarge openings in metal workpieces. They interpret blueprints, adjust machine settings, and ensure precision in machining processes. These operators are essential in manufacturing industries such as aerospace, automotive, and heavy equipment, where large and complex parts require accurate drilling and finishing. Their role also involves routine inspection and maintenance of machinery to guarantee safe and efficient operation.

What does a horizontal boring mill operator do?

As a horizontal boring mill operator, your duties and responsibilities are to operate drilling machines, which bore, mill, or ream holes in metal, plastic, or other fabricated materials meant to assemble into larger components. You may drill different kinds of holes, such as countersink holes, which can be covered up upon assembly. As the operator, you are responsible for machine set-up, its operation, and the maintenance of tools and equipment. You must also adhere to all relevant safety guidelines at your job site.

What are the key skills and qualifications needed to thrive as a horizontal boring mill operator, and why are they important?

To thrive as a Horizontal Boring Mill Operator, you need mechanical aptitude, precision measurement skills, and experience with machining principles, often supported by a technical diploma or apprenticeship. Familiarity with CNC controls, blueprint reading, and the operation of manual and computerized boring mill equipment is typically required. Attention to detail, problem-solving abilities, and effective communication are vital soft skills for maintaining safety and quality standards. These skills ensure accurate machining, minimize errors, and promote efficient teamwork in a manufacturing environment.

What are some common challenges faced by horizontal boring mill operators, and how can they be addressed?

Horizontal Boring Mill Operators often face challenges such as maintaining tight tolerances on large, heavy workpieces and ensuring equipment is properly aligned. These tasks require attention to detail, strong troubleshooting skills, and the ability to interpret complex blueprints. Collaboration with other machinists, maintenance teams, and quality inspectors is common to address issues quickly and keep production on schedule. Regular training on machine operation and safety protocols can help operators stay efficient and avoid costly errors or downtime.

What is the difference between Horizontal Boring Mill Operator vs Vertical Boring Mill Operator?

AspectHorizontal Boring Mill OperatorVertical Boring Mill Operator
CredentialsTypically requires machining certifications or technical trainingSimilar certifications, often overlapping with horizontal operators
Work EnvironmentOperates horizontal boring mills in manufacturing or machine shopsOperates vertical boring mills in similar settings
Industry UsageCommon in heavy machinery, aerospace, and automotive manufacturingUsed in similar industries for precise large-part machining

Both Horizontal Boring Mill Operators and Vertical Boring Mill Operators require technical skills and certifications in machining. They work in similar environments and industries, often performing comparable tasks with different machine orientations. The main difference lies in the type of boring mill they operate, which influences the machining process and the types of parts they produce.

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Horizontal Boring Mill Operator jobs near you
Infographic showing various Horizontal Boring Mill Operator job openings in California as of August 2026, with employment types broken down into 46% Full Time, 52% Part Time, 1% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution.

Horizontal Boring Mill Operator

Celeros Flow Technology

Downey, CA • On-site

$30 - $35/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 17 days ago

Job description

MACHINIST - HORIZONTAL BORING EXPERIENCE REQUIRED
Location: Downey, CA
Work Environment: On-site Monday - Friday
Work Schedule/Hours: 6:00AM - 2:30PM
Pay Range: $30-35/HOUR. The specific pay offered may be influenced by a variety of factors, including the candidate's experience, education, and skill set.
The Machinist will have experience with horizontal boring machines. There will be an emphasis on pumps or rotating equipment in a shop environment.
Duties and Responsibilities
  • Setting up and operating various machines used for milling and turning, and using the tools required for operating manual machines.
  • Reading and interpreting work orders to select the proper work center and identify required tooling to operate.
  • Obtaining and installing proper tooling, such as jaws, chucks, fixtures, and cutting tools.
  • Using various gauges and precision instruments (i.e calipers, IDOD micrometers, indicators, and special gaging equipment, etc.) to ensure quality is maintained and tolerances are met.
  • Cleaning and removing burrs after the operation is completed.
  • Training other employees on a variety of machine tools and operations.
  • Returning tooling and reporting any difficulties with tooling or material.
  • Maintain and practice safe machining tool usage, such as lathe guards, chuck guards, and PPE.

Knowledge, Skills and Abilities
  • Read, write, speak and comprehend English.
  • Add, subtract, multiply, divide, and work with fractional measurements and decimals.
  • Set up, adjust, and operate all machine tools in your area of responsibility to produce various parts within specifications from blueprints.
  • Read and understand basic manufacturing mechanical blueprints, and use good basic math skills in addition, subtraction, division, and multiplication.
  • Hold very close tolerances and surface finish requirements.
  • Exceptional teamwork skills and strong communication abilities.
  • Working knowledge or ability to learn to use a micrometer, depth micrometer, dial indicators, and other precision measuring instruments.
  • A demonstrated history of good attendance and a safe work record.

Education and Experience
  • A high school diploma or GED equivalent.
  • 5 - 10 years of horizontal boring machine experience.
  • Experience working with very tight tolerance of +/- .001.
  • The ability to read and interpret drawings, blueprints, and other documents.
  • Proficiency with measuring equipment, such as calipers, gauges and micrometers.
  • Experience working with a variety of materials such as carbon steel, stainless steel, hard-coated components, and composite materials.

WHAT WE DO
Celeros Flow Technology is helping to engineer a more sustainable future by developing products for emerging carbon capture and storage applications, new nuclear and renewable energy, while supporting existing customers in decarbonizing their operations. Our full lifecycle solutions are designed to reduce emissions, optimize operational efficiency, and deliver sustainable returns. Together, we can create a safer, more resilient, and cleaner energy future.
WHY JOIN OUR TEAM
Providing great benefit choices to you and your family is just one of the many ways Celeros Flow Technology supports the physical, financial, and emotional well-being of the people who make our company successful - you!
Key benefits include:
Health Insurance (effective on start date)
Dental/Vision (effective on start date)
Flexible Spending Accounts/Health Savings Accounts
Life Insurance/Disability/Accident/Critical Illness
401(k) Savings Plan with generous company match
Tuition Reimbursement
Paid time off/Generous Holiday Schedule
Celeros Flow Technology is an equal-opportunity employer. All aspects of employment, including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate based on race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.
Employment opportunities may require access to information that is subject to the export control regulations of the country in which you are applying. Hiring decisions for such positions are required by law to be made in compliance with these regulations. Applicants for employment opportunities must be able to meet export control requirements.

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