EZO

EZO is a manufacturer of miniature and instrument ball bearings, recognized for producing components in inch and metric sizes with bore diameters typically ranging from 1.0 mm to 1/4 inch and outer diameters up to approximately 13 mm. The brand’s product line includes radial ball bearings, flanged bearings, thrust bearings, and high-clearance variants, many of which are available in open, shielded, or sealed configurations. EZO bearings are constructed from materials such as stainless steel (AISI 440C or equivalent) and chrome steel, with options for corrosion-resistant finishes. Common specifications include ABEC precision classes (typically ABEC 3, 5, or 7), C3 internal clearance, and temperature ratings up to 302°F (150°C). The brand supplies bearings for applications requiring low torque, high rotational accuracy, and compact form factors, such as dental handpieces, medical instruments, small motors, encoders, and precision instrumentation. EZO does not manufacture large-diameter industrial bearings; its focus remains on sub-1-inch bore sizes. 3G Electric stocks over 200 SKUs of EZO bearings, including radial, flanged, and thrust types, in both inch and metric series. The inventory covers common industry numbers such as R2-5, 188, 692X, 685, 686, R2-6, and R166, with options for double shields (ZZ), flanged outer rings (F prefix), and high-clearance (MC3) variants. 3G Electric supports procurement by offering these bearings in single-unit quantities or bulk, with logistics for global shipment. Engineers and maintenance professionals can select EZO bearings based on bore size, outer diameter, width, shield type, and material, with datasheets available for dimensional and load specifications. The brand’s products are not certified to automotive or aerospace standards unless explicitly stated; they are designed for general industrial and instrument-grade use.

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Common Applications

Medical instruments — EZO stainless steel miniature ball bearings (e.g., 692XHZZP6MC3AF2) in dental handpieces and surgical tools
Precision encoders — EZO flanged bearings (e.g., F685HZZP6MC3SRL) for optical encoder shafts requiring axial location
Small electric motors — EZO radial ball bearings (e.g., 686HZZP6MC3SRL) in miniature DC motors and servo actuators
Instrumentation — EZO high-clearance bearings (e.g., SFR2-5 A3MC3AF2) in flow meters and pressure sensors
Robotics — EZO inch-series bearings (e.g., SR188ZZA3MC3SRL) in compact joint modules and end-effectors
Aerospace actuators — EZO corrosion-resistant bearings (e.g., SFR166ZZA3MC3AF2) in control surface linkages

Frequently asked questions

Common questions about EZO from 3G Electric.

What materials are used in EZO miniature ball bearings?

EZO miniature ball bearings are typically made from stainless steel (AISI 440C) or chrome steel (SAE 52100). Stainless steel variants offer corrosion resistance for applications in medical devices, food processing, or humid environments. Chrome steel bearings provide higher load capacity but are not inherently corrosion-resistant. The specific material is indicated in the part number; for example, an 'S' prefix often denotes stainless steel rings.

What does the 'MC3' suffix mean in EZO bearing part numbers?

The 'MC3' suffix in EZO part numbers indicates a C3 internal clearance, meaning the radial internal clearance is greater than standard (CN). This is suitable for applications where the bearing may experience thermal expansion or where a looser fit is required to accommodate shaft or housing tolerances. It does not affect the bearing's precision class.

Are EZO flanged bearings interchangeable with standard radial bearings?

EZO flanged bearings (often prefixed with 'F' in the part number, e.g., F685HZZP6MC3SRL) have the same bore, outer diameter, and width as their non-flanged counterparts, but include an integral flange on the outer ring. This flange allows axial location without a separate shoulder or snap ring. They are not direct drop-in replacements for non-flanged bearings unless the housing is designed to accept the flange.

What is the maximum operating temperature for EZO stainless steel bearings?

EZO stainless steel miniature ball bearings are typically rated for continuous operation up to 302°F (150°C). This limit is determined by the material properties and the lubricant used. For applications exceeding this temperature, special lubricants or material variants may be required. Always verify the specific part number's datasheet for exact temperature limits.

How do I select the correct EZO bearing for a high-speed application?

For high-speed applications, select EZO bearings with a C3 clearance (MC3 suffix) to accommodate thermal expansion, and choose a shielded or sealed variant if lubrication retention is critical. Precision class ABEC 5 or higher is recommended for reduced vibration. Verify the bearing's limiting speed, which depends on bore size, lubrication type, and load. EZO does not publish universal speed ratings; consult the manufacturer's catalog for specific values.

Does 3G Electric supply EZO products?

Yes — 3G Electric (S) Pte. Ltd. supplies EZO products. We stock the EZO catalog and supply genuine factory-original products with full manufacturer warranty and technical support.