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60 Series
Home Deep Groove Ball Bearings 60 Series

6004-2RS Deep Groove Ball Bearing | Advanced Rubber Lip Dustproof Containment | 20×42×12 mm

6004-2RS Deep Groove Ball Bearing | Advanced Rubber Lip Dustproof Containment | 20×42×12 mm

The 6004-2RS is a high-grade, single-row radial ball bearing designed to supply dependable operational stability and efficient friction reduction across medium-duty setups. Distinct from open configuration components, this unit utilizes dual-sided synthetic rubber contact closures (2RS) to forge an impenetrable physical boundary against ambient moisture, particulate matter, and fine debris while securely sealing the internal lubricant. Complying with standard metric scaling—featuring a 20 mm bore diameter, 42 mm outer diameter, and 12 mm width—the 6004-2RS stands as a versatile mechanical assembly for compact power tools, light vehicle hubs, and household appliances.

6004-2RS Deep Groove Ball Bearing 20x42x12 mm | Double-Sided Synthetic Rubber Seal | Optimized Service Life & Radial Fit

Engineered to deliver balanced "anti-contamination, high-efficiency" utility, the 2RS protective layer applies uniform pressure over the rotating inner ring. This precise structural design eliminates micro-particle migration, defending the internal polished raceways against fluid entry and powdery residues. It is the preferred choice for industrial actuators, consumer electronics, and e-mobility systems where isolating the rolling architecture from environmental stress is essential for minimizing maintenance intervals.

6004-2RS Deep Groove Ball Bearing | Advanced Rubber Lip Dustproof Containment | 20×42×12 mm

Comprehensive Applications

Optimized for rotational balance and medium load handling, the 6004-2RS is extensively deployed throughout light-industrial and mechanical manufacturing fields:

Power Tools & Workshop Equipment
  • Benchtop Milling Spindles
  • Circular Saws and Angle Grinders
  • Portable Air Compressors
Electric Motors & HVAC Systems
  • Ventilation Fan Blowers
  • Sub-Fractional Horsepower Motors
  • Domestic Heat Pump Pumps
Two-Wheelers & E-Mobility
  • Electric Bicycle Wheel Hubs
  • Motorcycle Transmission Shafts
  • Mobility Scooter Drivetrains

Key Performance Features

01. Dual-Lip Synthetic Seal Protection

The resilient nitrile rubber barriers (2RS) establish a tight, continuous wipe seal against the inner race groove. This layout stops moisture vapor and coarse dust from fouling the internal assembly, making it highly reliable in outdoor or messy operating zones.

02. Meticulous Geometry for Stable Rotation

Forged from premium-grade GCr15 Chrome Steel, the internal balls and tracking channels are micro-honed to tight structural tolerances. This reduces acoustic noise and structural vibration, sustaining structural integrity under continuous radial forces.

03. Factory-Calibrated Grease Matrix

Each assembly is pre-lubricated with a calculated dose of high-end, anti-oxidative grease at the production plant. The tightly sealed 2RS configuration completely eliminates regular re-greasing tasks, allowing a true fit-and-forget implementation.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6000 Series (Light-Duty Series)
Basic Designation 6004
Suffix 2RS / DDU / LLU (Two Rubber Seals)
Bore Diameter (d) 20 mm
Outer Diameter (D) 42 mm
Width (B) 12 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / AISI 52100)
Precision Class ABEC-1 (ABEC-3 / ABEC-5 Upgrades Available)
Cage Material Standard Pressed Steel Cage
Dynamic Load Rating (Cʳ) 9.40 kN
Static Load Rating (C₀ʳ) 5.05 kN
Limiting Speed (Grease) 11,000 r/min
Limiting Speed (Oil) 18,000 r/min (Open Baseline Reference)
Weight (approx.) 0.069 kg

Interchange Part Numbers

The 6004-2RS follows global ISO dimension standards and can seamlessly replace or substitute the following industry designations:

  • NSK: 6004 DDU / 6004 VV
  • SKF: 6004-2RS1 / 6004-2RSH
  • KOYO: 6004 2RS
  • NTN: 6004 LLU / 6004 EE
  • EZO: 6004-2RS
  • FAG: 6004-2RSR
  • Timken: 6004-2RS

Design & Configuration

The physical architecture of the 6004-2RS focuses on maximizing mechanical survival when deployed within exposed or variable working environments. Unlike metal shields that leave a tiny open clearance gap, the synthetic rubber lips touch the inner ring surface to seal the core completely. This prevents oil separation and keeps external contaminants from grinding down the steel raceways.

It serves as an excellent upgrade component for mid-tier rotating machinery where particulate pollution or liquid mist is present, such as small electric motors, power tool drivetrains, and outdoor gear assemblies.

"An excellently balanced, rubber-sealed miniature-to-mid radial bearing built to handle moderate velocities while fully isolating internal mechanical surfaces from outside pollutants."

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