CNC Turning
Produce custom bearing races, sleeves, and cylindrical components with consistent dimensional relationships, supporting both prototype quantities and small production runs across multiple machinable materials.
Get precision-made custom bearing components for prototype builds and small production quantities, backed by nearly 60 years of machining experience. M.A.R.'s Engineering delivers tight tolerances, fast transitions from concept to production, and integrated in-house processes that help reduce delays, simplify sourcing, and keep critical dimensions consistent from first article through repeat runs.
Precision machining and finishing services for custom bearing prototypes, low-volume runs, and close-tolerance component production.
Produce custom bearing races, sleeves, and cylindrical components with consistent dimensional relationships, supporting both prototype quantities and small production runs across multiple machinable materials.
Ideal for miniature or intricate bearing parts requiring tight tolerances, fine features, and stable machining performance on long, slender, or highly detailed geometries.
Create intricate bearing-related features, sharp internal corners, and precision tooling in conductive materials where conventional machining cannot achieve the required geometry.
Achieve ultra-fine finishes and diameter tolerances as close as 0.0001 inches for bearing shafts, sleeves, and mating components requiring precise fit and smooth operation.
Manufacture dimensionally critical bushings and sleeve-style bearing components with tight bore control, strong surface quality, and material options suited to demanding assemblies.
Add plating, polishing, deburring, and light assembly to deliver bearing components that are ready for testing, validation, or installation with fewer outside vendors.
M.A.R.'s Engineering supports custom bearing manufacturing when standard catalog parts will not meet your dimensional, material, or performance requirements. From first-run prototypes to small quantity production, the team combines CNC turning, Swiss machining, EDM, grinding, and finishing in one facility to maintain tighter control over tolerances, shorten lead times, and simplify project management for engineers and buyers.
See why customers rely on consistent quality, traceability, and responsive low-volume production support.
"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."
"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."
"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."
Customers choose M.A.R.'s Engineering for precision, flexibility, and dependable in-house manufacturing support.
Family-owned since 1964 with decades of precision machining knowledge across demanding industrial applications.
Turning, EDM, grinding, finishing, and light assembly under one roof reduce handoff delays.
Capabilities include tolerances up to 0.0001 inches for critical bearing-related dimensions and finishes.
Supports prototypes, small quantities, and scalable production without forcing multiple manufacturing vendors.
Built on decades of family-run machining expertise.
M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained a family-run precision manufacturing business ever since. Over the decades, the company expanded its capabilities through new equipment, a second operations department, multi-spindle capacity, CNC machining, and in-house Wire EDM to improve quality control and tooling responsiveness. Today, M.A.R.'s Engineering continues to serve customers who need close-tolerance components, prototype support, and streamlined production in one facility. The company's vision centers on dependable quality, practical problem-solving, and helping customers move from custom part development to repeatable manufacturing with fewer delays, fewer vendors, and stronger process control.
Yes. M.A.R.'s Engineering supports prototype quantities for custom bearing-related parts such as sleeves, races, bushings, shafts, pins, and other precision cylindrical components. Prototype work can be produced using CNC turning, Swiss machining, EDM, and grinding, allowing critical dimensions, fit, and finish to be validated before moving into larger production volumes.
Talk with our team about tolerances, materials, and production options.
Quality-focused manufacturing and process consistency.
Inspection system compliance for precision work.
Long-standing precision manufacturing experience.
Share your drawings, quantities, materials, and tolerance requirements. Our team will review your project and help determine the right manufacturing approach.
For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.
For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.