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MR82-2RS Miniature Deep Groove Ball Bearing For Precision Instruments | Double Sealed | 2.5×8×2.5 mm

MR82-2RS Miniature Deep Groove Ball Bearing For Precision Instruments | Double Sealed | 2.5×8×2.5 mm

Engineered for applications demanding strict contamination control within tight spatial limits, the MR82-2RS is a premium single-row miniature ball bearing that balances high-speed rotation with superior sealing capabilities. Outfitted with dual contact rubber seals (2RS), this 2.5x8x2.5 mm component effectively blocks moisture, dust, and particulate matter while securely locking in high-quality lubricant for zero-maintenance operation. Weighing approximately half a gram, it is the ideal rotary solution for office electronics, personal care devices, and precision instruments where both miniaturization and long-term durability are non-negotiable.

MR82-2RS Deep Groove Ball Bearing 2.5x8x2.5 mm | MR Metric Series – Ultra-Compact & Fully Sealed

This highly specialized micro-bearing ensures reliable rotational stability even in environments susceptible to debris exposure. Unlike metal-shielded alternatives, the MR82-2RS utilizes Nitrile Butadiene Rubber (NBR) contact seals to create a definitive barrier against external elements. Capable of achieving high operational speeds up to 60,000 r/min (with grease lubrication), it serves as a vital mechanical asset for enclosed systems that require absolute internal protection without sacrificing dynamic performance or smooth, quiet operation.

MR82-2RS Miniature Deep Groove Ball Bearing For Precision Instruments | Double Sealed | 2.5×8×2.5 mm

Comprehensive Applications

Engineered for ultra-compact, high-speed mechanisms requiring robust contamination defense and minimal maintenance:

Consumer & Office Electronics
  • Precision Office Scanners and Printers
  • High-RPM Electric Shavers and Grooming Devices
  • Wearable Technology Mechanisms
  • Automated Camera Lenses and Gimbals
Micro Motors & RC Equipment
  • Miniature DC Motors and Steppers
  • High-Performance RC Car Gearboxes and Wheels
  • Micro Drone Rotors and Servos
  • Small-Scale Actuator Assemblies
Precision Instrumentation
  • Medical Diagnostic Pumps
  • Miniature Flow Meters
  • Automated Laboratory Equipment
  • Fine Optical Measuring Devices

Key Performance Features

01. Superior Rubber Sealing Technology (2RS)

Equipped with premium NBR contact seals on both sides, the MR82-2RS provides excellent defense against dust, dirt, and moisture. This tight sealing architecture ensures the factory-filled lubricant remains intact, significantly extending the bearing's service life in moderately contaminated environments while maintaining quiet, low-vibration functionality.

02. Premium GCr15 Chrome Steel Construction

Forged from high-carbon chromium bearing steel, the inner rings, outer rings, and ball elements undergo rigorous heat treatment processes. This results in exceptional wear resistance, robust load-carrying capacity (up to 474 N dynamic load), and excellent fatigue strength tailored for demanding micro-engineering applications.

03. Ultra-Miniature Architecture

Featuring an extremely compact 2.5 mm bore and 8 mm outer diameter, this bearing empowers technical procurement teams and engineers to shrink mechanical footprints without compromising on sealing integrity. Weighing a mere 0.52 grams, it facilitates critical weight reduction for handheld electronics and battery-powered portable devices.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series MR Series (Metric Miniature)
Basic Designation MR82
Suffix -2RS (Double Rubber Seals)
Bore Diameter (d) 2.5 mm
Outer Diameter (D) 8 mm
Width (B) 2.5 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Seal Material NBR (Nitrile Butadiene Rubber)
Dynamic Load Rating (Cʳ) 0.474 kN (474 N)
Static Load Rating (C₀ʳ) 0.144 kN (144 N)
Limiting Speed (Grease) 60,000 r/min
Limiting Speed (Oil) 67,000 r/min
Weight (approx.) 0.00052 kg (0.52 grams)

Interchange Part Numbers

Common manufacturer equivalents utilized by technical buyers include:

  • SKF: MR82-2RS1
  • NSK: MR82DDU
  • FAG: MR82-2RSR
  • NTN: MR82LLU
  • KOYO: MR82-2RS
  • MRC: L-825DD

Design & Configuration

Protected by dual NBR seals, the MR82-2RS is the ultimate choice for high-speed micro-applications where contamination exclusion is paramount. Should your project demand lower friction torque (such as non-contact seals) or specific high-temperature lubrication profiles, this bearing can be customized to fit exact operational parameters. Drawing on over 15 years of manufacturing history, Welink Bearing's technical support team is readily available to guide engineers in finalizing the ideal bearing configuration for specialized B2B industrial and commercial demands.

"Integrate the MR82-2RS miniature sealed bearing to secure exceptional contamination protection, prolonged service life, and reliable high-speed performance in your most space-constrained assemblies."

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