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MR95-2RS Sealed Deep Groove Ball Bearing | Heavy-Duty Contaminant Defense | 5×9×3 mm

MR95-2RS Sealed Deep Groove Ball Bearing | Heavy-Duty Contaminant Defense | 5×9×3 mm

The MR95-2RS is a highly resilient, single-row micro ball bearing tailored for applications where space is extremely limited but environmental protection is non-negotiable. Equipped with twin synthetic rubber contact seals (2RS) on both sides, this compact 5×9×3 mm unit creates an impenetrable shield against water droplets, fine dust, and operational debris. The friction-optimized rubber lips make direct contact with the inner ring, effectively locking the factory-supplied lubricant inside while blocking external corrosive elements, thereby maximizing the lifecycle of the assembly in challenging outdoor or harsh industrial settings.

MR95-2RS Deep Groove Ball Bearing 5×9×3 mm | MR Series – Maximum Sealing & Durability

Engineered to balance ultra-compact dimensions with superior ruggedness, this rubber-sealed micro-bearing thrives in environments that would typically degrade unsealed components. The MR95-2RS is built for the tightest spatial constraints in off-road hobbies, portable electronics, and precision manufacturing. By utilizing top-tier NBR seals, it isolates the precision-ground rolling elements from harsh particulates, guaranteeing a stable, low-noise rotation that holds up under repetitive stress and variable climates.

MR95-2RS Sealed Deep Groove Ball Bearing | Heavy-Duty Contaminant Defense | 5×9×3 mm

Comprehensive Applications

Perfectly suited for mechanical engineers and hobbyists who require robust environmental sealing in ultra-small mechanisms:

Miniature Robotics & Automation
  • Micro-Actuator Joints in Robotics
  • Sealed Conveyor Rollers for Dusty Environments
  • Small Automated Inspection Drones
  • Compact Weatherproof Rotary Encoders
RC Models & Outdoor Hobbies
  • High-End Baitcasting Fishing Reels (Sealed Spools)
  • Micro RC Car Wheel Hubs & Gearboxes
  • Compact Drone Gimbal Motors
  • All-Weather Model Boat Propeller Shafts
Handheld Electronics & Appliances
  • Water-Resistant Electric Toothbrush Mechanisms
  • Portable Massage Gun Pivot Points
  • Small Handheld Power Tool Motors
  • Smart Home Outdoor Security Camera Drives
Medical & Diagnostic Devices
  • Portable Blood Analyzers
  • Sealed Miniature Fluid Pumps
  • Dental Laboratory Grinding Tools
  • Compact Veterinary Diagnostic Equipment

Key Performance Features

01. Twin NBR Contact Seals (2RS)

Engineered with high-density Nitrile Butadiene Rubber (NBR) seals on the left and right faces. This 2RS architecture delivers the ultimate defense against moisture and micro-grit, making it the definitive solution for hardware deployed in humid, dusty, or unsealed conditions.

02. Ultra-Compact 5x9x3 mm Footprint

Boasting a 5mm bore and an incredibly tight 9mm outer diameter, this bearing is designed for extreme miniaturization. At a mere 0.7 grams, it provides critical shaft support and environmental shielding for weight-restricted, micro-motor systems.

03. Heavy-Duty GCr15 Chrome Steel

Manufactured from high-purity SAE 52100 Chrome Steel, the inner rings, outer rings, and ball bearings are extensively heat-treated to achieve exceptional hardness. This ensures the bearing sustains its P5 precision rating and resists fatigue even when subjected to constant radial loads.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series MR Series (Miniature Metric)
Basic Designation MR95
Suffix 2RS (Dual Rubber Contact Seals)
Bore Diameter (d) 5 mm
Outer Diameter (D) 9 mm
Width (B) 3 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class P5 / ABEC-5 Available
Seal Material Synthetic Rubber (NBR)
Dynamic Load Rating (Cʳ) 0.431 kN (431 N)
Static Load Rating (C₀ʳ) 0.169 kN (169 N)
Limiting Speed (Grease) 40,000 r/min
Limiting Speed (Oil) 46,000 r/min (Requires seal removal)
Weight (approx.) 0.0007 kg (0.7 grams)

Interchange Part Numbers

Common global manufacturer cross-references for engineering procurement:

  • SKF: MR95-2RS1
  • NMB: L-950DD
  • NSK: MR95 DDU
  • NTN: MR95 LLU
  • FAG: MR95-2RSR
  • KOYO: MR95-2RS

Design & Configuration

Featuring robust contact sealing, the MR95-2RS is the optimal choice for maintenance-free reliability where contamination risks are high. While the rubber seals introduce a slight increase in starting torque compared to open or shielded bearings, the trade-off is unparalleled internal protection. Leveraging over 15 years of manufacturing excellence, Welink Bearing supplies customizable lubrication options—ranging from food-grade greases to marine-grade synthetics—and specific clearance tolerances to align perfectly with your project's precise demands.

"Deploy the MR95-2RS sealed miniature bearing to secure uncompromising environmental resistance and smooth rotary performance in your most spatially restricted designs."

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