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Bearings

MinebeaMitsumi Bearing-Related Products

by Kevin Sweeney
04 October, 2025
6 min read
NMB Precision mechanical components

Pacific International Bearing Sales (PIB) is a trusted distributor of advanced bearing technologies, delivering products that support industries where precision and reliability are critical. Among the most versatile offerings from MinebeaMitsumi (NMB) are bearing-related products, including NMB pivot assemblies and NMB precision mechanical components. These solutions leverage MinebeaMitsumi’s (NMB) in-house expertise in ball bearing production and ultra-precision machining, resulting in assemblies designed for smooth performance, compact integration, and long service life.

NMB Pivot Assemblies: Precision for Rotational Stability

Pivot assemblies are widely used in high-precision applications such as hard disk drives (HDDs), actuators, and other motion control devices. By combining NMB ball bearings between shaft and sleeve, these assemblies ensure:

  • High rotational accuracy – vital for positioning HDD magnetic heads and other micro-actuation systems.
  • Compact, integrated design – reducing assembly complexity by combining multiple components into one unit.
  • Durability under continuous operation – engineered for long service life even under repetitive or high-speed motion.
  • In-house sourcing – all components (bearings, shafts, sleeves) are produced internally by MinebeaMitsumi (NMB) for consistent quality and reliable supply.

These assemblies benefit from the same ultra-precision machining processes used in MinebeaMitsumi’s(NMB) fluid dynamic bearings, making them suitable for applications requiring near-zero vibration and superior accuracy.

Precision Mechanical Components: Beyond Standard Bearings

MinebeaMitsumi (NMB) also manufactures composite assemblies that integrate bearings into mechanical sub-systems. Examples include:

  • Pulley bearings – combining a plastic pulley with a ball bearing raceway for use in ATMs, vending machines, and other automated systems.
  • Custom composite assemblies – built to customer specifications, incorporating MinebeaMitsumi NMB bearings into housings, pulleys, or actuator systems.

These assemblies take advantage of MinebeaMitsumi’s(NMB) vertically integrated production model, where shafts, bearings, and housings are all produced in-house. This allows for:

  • Faster production and delivery times.
  • Better cost competitiveness.
  • Tight quality control from raw material to final assembly.

Specifications Overview

FeaturePivot AssembliesPrecision Mechanical Components
StructureBall bearings between shaft and sleeveBall bearings integrated into pulleys or composite parts
Size RangeMiniature assemblies (for HDDs and micro-actuators)Small to mid-size assemblies for automation equipment
Material OptionsHigh-grade bearing steel, precision-machined shafts and sleevesBearing steel + molded plastic or custom housings
ApplicationsHDD actuators, precision motion control systemsATMs, ticket machines, vending machines, automation
Manufacturing Advantage100% in-house sourcing and assemblyIn-house bearing + housing production
TechnologyUltra-precision machining, similar to fluid dynamic bearingsIntegrated assemblies for durability and compact design

FAQ

Q1: What industries use pivot assemblies?
A1: Pivot assemblies are mainly used in data storage (HDDs) and precision actuators, but their accuracy and compact design also make them suitable for robotics, instrumentation, and other high-precision applications.

Q2: How do MinebeaMitsumi’s(NMB) precision mechanical components differ from standard bearings?
A2: Unlike stand alone bearings, these components are integrated solutions – for example, a pulley bearing or actuator assembly – that combine MinebeaMitsumi(NMB) bearings with additional parts, simplifying installation and improving overall system reliability.

Q3: Are these products customizable?
A3: Yes. MinebeaMitsumi(NMB), in collaboration with PIB, can deliver custom assemblies tailored to specific requirements, whether it’s material selection, size variation, or integration with complex housings.

Q4: What is the key advantage of MinebeaMitsumi’s(NMB) vertical integration?
A4: Because all critical components (bearings, shafts, housings) are manufactured in-house, MinebeaMitsumi(NMB) ensures consistent quality, shorter lead times, and cost efficiency – a competitive advantage for high-tech industries.

MinebeaMitsumi’s (NMB) pivot assemblies and precision mechanical components embody decades of expertise in miniature and composite bearing solutions. They deliver compact, precise, and reliable performance across multiple industries.

Explore the full range today in the PIB online catalog, where you can review technical specifications, request a quote, or connect with a PIB engineer to discuss custom solutions tailored to your project.

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Written by

Kevin Sweeney

Founder and CEO at Pacific International Bearing Sales Inc (PIB)
Education: BS Business and Economics California State University Hayward Ca
CBS (Certified Bearing Specialist)

My role with Pacific International Bearings (PIB) is currently CEO. Since 1976, I have been deeply involved in the bearing industry, working in manufacturing sales at NTN Bearing and subsequently in Bearing Distribution. Before establishing PIB in 1990, I gathered valuable experience in bearing manufacturing and distribution. The last 45 + years in the bearing industry have been both rewarding and challenging, assisting customers across a large number of diverse bearing applications.
Outside of the bearing industry, my interests are family, woodworking, motorcycling, cars, gardening, and golf.
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