Ball Bearings
Miniature Deep Groove Ball Bearings
BOM manufactures miniature deep groove ball bearings in 600 (standard), 618 (extra-light), and 619 (light) series, with flanged variants available across all series. Bore sizes range from 1 mm to 10 mm, serving precision instruments, medical devices, small motors, and industrial automation applications. Open, shielded (ZZ), and sealed configurations are available with factory pre-lubrication. Full-specification custom manufacturing is supported for non-standard requirements.
Key Features
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618 / 619 / 600 Series Coverage
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Flanged Variants Available (F684, F694, F604, etc.)
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Open, Shielded, and Sealed Configurations
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High Rotational Speed Capability
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Stainless Steel and Ceramic Hybrid Options
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Full-Specification Custom Manufacturing Available
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Description
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Miniature Deep Groove Ball Bearings
Compact Design Customizable
BOM manufactures miniature deep groove ball bearings in 600 (standard), 618 (extra-light), and 619 (light) series, with flanged variants available across all series. These compact bearings serve precision instruments, medical devices, small motors, and industrial automation applications where space is limited.
- Series Coverage: 600 (standard), 618 (extra-light thin wall), 619 (light), and flanged variants for different space and load requirements
- Load Type: Radial loads with moderate bidirectional axial capacity in a compact envelope
- Seal Options: Open, ZZ (shielded), and sealed configurations with factory pre-lubrication available
- Flanged Variants: Integral outer ring flange for positive axial location, eliminating snap rings and retaining hardware
- Speed Capability: High rotational speed rated for precision spindles, small motors, and instrumentation drives
- Customization: Full-specification custom manufacturing available, covering dimensions, materials, coatings, and bearing structure
Miniature Deep Groove Ball Bearings: Dimensions & Load Ratings
618 · 619 · 600 series shown | Flanged variants (F684, F694, F604, etc.) available | Contact us for sizes not shown
| Designation |
d mm |
D mm |
B mm |
Cr kN |
C0r kN |
Speed rpm |
|---|
Custom Miniature Bearing Manufacturing
Customizable Engineering Support
BOM manufactures custom miniature bearings for applications where catalog specifications do not meet design requirements, from modified dimensions and special materials to complete bearing architecture redesign.
- Dimensional Customization: Non-standard bore, OD, and width for proprietary compact designs and tight-envelope assemblies
- Material Options: Stainless steel, ceramic hybrid, and corrosion-resistant variants for medical, cleanroom, and high-temperature environments
- Seal and Lubrication: Custom seal profiles, special grease fills, and extended temperature range lubricants for demanding operating conditions
- Flanged Designs: Custom flange dimensions and profiles for application-specific mounting and retention requirements
- Customization: Full-specification custom manufacturing available, covering dimensions, materials, coatings, and bearing structure
Applications
Precision Spindles & Small Motors
High-speed miniature bearings for precision instrument spindles, dental handpiece motors, and small servo motors in industrial automation equipment.
Medical & Laboratory Equipment
Precision miniature bearings for dental handpieces, centrifuges, infusion pumps, and laboratory instruments requiring low noise and contamination-free operation.
Semiconductor & Precision Instruments
Miniature bearings for wafer handling, optical inspection equipment, precision encoders, and measurement instruments requiring ultra-low vibration and contamination-free operation.
Robotics & Automation
Lightweight, high-precision miniature bearings for robot finger joints, servo axes, encoders, and small linear actuators in collaborative robotics.
About BOM Bearing
BOM Bearing is a professional manufacturer of miniature deep groove ball bearings, delivering precision-engineered solutions for medical, robotics, aerospace, and precision instrument applications worldwide.
- Quality Assurance: ISO 9001, IATF 16949, and ISO 14001 certified; quality and environmental standards validated at every production stage
- Miniature Expertise: Specialized manufacturer covering 618, 619, and 600 series across multiple bore sizes and configurations including flanged variants
- Custom Manufacturing: Full-specification customization from non-standard dimensions and alternative materials to specialized coatings and complete bearing architecture redesign, engineered to your exact requirement
- Technical Support: Professional engineering team for product selection, application analysis, and troubleshooting
- Fast Delivery: Efficient production and global logistics network ensuring timely delivery
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Frequently Asked Questions (FAQ)
What is the difference between the 618, 619, and 600 miniature bearing series?
They differ in cross-section size and load capacity for the same bore diameter. The 618 series has the thinnest wall section, making it suitable for extremely tight spaces. The 619 series provides a moderate cross-section with higher load capacity while remaining compact. The 600 series offers the largest cross-section and highest load capacity among miniature sizes. The choice depends on your space constraints versus load requirements.
What bore sizes are available for BOM miniature bearings?
BOM manufactures miniature deep groove ball bearings with bore diameters from 1 mm to 9 mm across the 618, 619, and 600 series. Flanged variants are also available for all standard bore sizes. For bore sizes not listed in our specification table, contact our engineering team for availability.
When should I choose a flanged miniature bearing?
Flanged bearings are recommended when axial location is required without additional snap rings or housings, when installation space is limited, or when the bearing must be retained from one side only. The integral flange simplifies assembly and prevents bearing migration under axial loads.
What seal and shield options are available for miniature bearings?
BOM miniature bearings are available in open, ZZ (metal shielded), and sealed configurations. Shielded variants offer light contamination protection at full speed capability. Sealed variants provide superior dust and moisture resistance with factory pre-lubrication for maintenance-free operation. Custom seal materials and special lubricant fills are available on request.
Can BOM manufacture custom miniature bearings?
Yes. BOM manufactures full-specification custom miniature bearings, including non-standard dimensions, alternative materials, specialized coatings, and complete bearing architecture redesign. Whether you need a modified bore/OD combination, stainless steel or ceramic hybrid construction, or custom seal configurations, our engineering team works directly with your requirements. Contact us with your specifications for a detailed proposal.
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