20PCS MF84 Open Miniature Flanged Ball Bearings 4x8x2mm High Speed Motor Bearing Industrial Bearing

Description

Product Overview

The MF84 Open miniature flanged ball bearing is engineered for high‑speed motor applications where precision and durability are paramount. Measuring a compact 4x8x2mm, this bearing combines a robust outer ring, a precisely machined inner ring, premium steel balls, a resilient retainer, and a sealing ring to protect against contaminants. Constructed from high carbon chromium bearing steel (GCr15), the material offers exceptional hardness, wear resistance, and load‑carrying capacity, making it suitable for demanding environments.

Each bearing is produced under strict quality‑control protocols at SUOFEILAIMU‑US facilities, ensuring consistent dimensional accuracy and surface finish. The open design facilitates easy installation and maintenance, while the flanged sleeve configuration provides added axial stability, reducing the risk of misalignment during high‑speed operation. The package includes 20 pieces, each individually inspected and packed to prevent damage during transit.

Usage

These bearings excel in a wide range of applications that require rapid rotation and reliable performance. They are commonly used in angle grinders, where the high rotational speeds demand bearings that can sustain heavy radial loads without overheating. Vacuum cleaners benefit from the smooth operation and reduced noise that these precision bearings provide, extending the lifespan of the motor assembly.

Hair dryers and other personal care appliances rely on compact, high‑speed bearings to maintain airflow efficiency while keeping the device lightweight. Sweeping robots and autonomous cleaning devices use the MF84 Open bearing to achieve precise wheel movement, enabling thorough coverage of floor surfaces. Additionally, the bearing is suitable for massagers, wall breakers, and other industrial tools where compact size and high speed are essential.

Target users include manufacturers of small‑appliance motors, DIY hobbyists building custom rotary tools, and service technicians seeking reliable replacement parts for existing equipment. The bearing’s versatility makes it a preferred choice for both original equipment manufacturers (OEMs) and aftermarket distributors.

Why Choose Us

Choosing the MF84 Open bearing from SUOFEILAIMU‑US means selecting a product backed by years of expertise in bearing technology. Our manufacturing process incorporates advanced heat‑treatment cycles that fully harden the GCr15 steel, delivering a balance of hardness and toughness that resists fatigue and deformation under continuous high‑speed operation.

We employ a multi‑stage inspection system that includes dimensional verification, surface roughness measurement, and dynamic balance testing. This rigorous approach guarantees that each bearing meets or exceeds industry standards for performance and reliability. Our commitment to quality is further demonstrated by a comprehensive warranty that covers material defects and premature wear, providing customers with peace of mind.

In addition to product excellence, we offer responsive technical support and a streamlined ordering process. Our knowledgeable staff can assist with compatibility questions, installation guidance, and troubleshooting, ensuring that you receive the right bearing for your specific application. Fast shipping and secure packaging reduce lead times, helping you keep production schedules on track.

Key Features

• High carbon chromium steel provides exceptional hardness and wear resistance for long service life
• Compact 4x8x2mm size fits into tight spaces without sacrificing performance
• Open flanged design ensures easy installation and reliable axial stability
• Sealing ring protects against dust and moisture, reducing maintenance needs
• Dedicated customer support and warranty for hassle‑free after‑sales service

FAQ

What is the maximum operating speed for the MF84 Open bearing?

The bearing is designed for high‑speed applications and can safely operate up to 12,000 RPM when properly lubricated and installed within its specified load limits.

Can this bearing be used in wet environments?

Yes, the sealing ring helps prevent water ingress, making the bearing suitable for applications such as wet‑type vacuum cleaners and certain cleaning robots, provided the surrounding components are also rated for moisture exposure.

Is lubrication required for optimal performance?

While the bearing includes a sealing ring that retains lubrication, applying a thin layer of high‑temperature grease during installation can further enhance performance and extend service intervals, especially in high‑load scenarios.

How do I determine the correct bearing orientation?

The MF84 Open bearing is symmetric, so it can be installed in either direction. However, ensure the flanged side faces the housing to maximize axial support and prevent movement during operation.

What is the recommended replacement interval?

Replacement intervals depend on operating conditions such as speed, load, and environment. For typical consumer appliances, a replacement every 2‑3 years is advisable, while industrial equipment may require more frequent inspection and replacement based on usage intensity.