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The Makita USA Inc 211111-8 is an original equipment manufacturer (OEM) high-precision, single-row deep groove radial ball bearing. It is designed to secure armature components, support rotating shafts, and minimize frictional resistance within heavy-duty Makita power tools, outdoor equipment, and industrial machinery.
Features
High-Speed Thermal Stability: Operating temperature range of -40°F to 250°F (-40°C to 121°C)
Friction Optimization: Non-contact labyrinth seals lower torque resistance compared to standard 2RS contact seals to preserve battery life and prevent internal overheating
Maintenance-Free Lifecycle: Fully enclosed, double-sealed design retains grease inside the rolling tracks for the entire service life
OEM Tolerance Matching: Meets engineering specifications for shaft press-fits and housing slip-fits
Specifications
Manufacturer Part Number: 211111-8 (6301LLB / 6300LR)
Sealing Media: Nitrile Rubber (NBR) synthetic compound chemically bonded to a steel sheet reinforcement plate
Lubrication Infill: Factory pre-lubricated with polyurea or lithium-complex grease
Enclosure Type: LLB Non-Contact Rubber Seals (double-sealed, non-contact rubber shields on both sides)
Internal Radial Clearance: CN (Normal clearance)
Precision Rating: ISO Class 0 (equivalent to ABEC 1 standard)
Configuration: Single-row, non-filling slot deep groove geometry
Country of Origin: Japan (JP) / United States (USA)
Harmonized Tariff Code (HS Code): 8482.10.5048
Universal Product Codes (UPC/EAN): 4547359005257
Applications
Large Angle Grinders: Main armature bearing for Makita models 9607GB, 9607NB (Type 1 & 2), GA7001L, and GA7910 / GA7911 series heavy-duty industrial grinders
Commercial Chainsaws: High-speed crankshaft and motor armature support in corded electric chainsaws, including UC3530A, UC3551A, UC4030A, and UC4051A
Industrial Sanders & Production Equipment: Rotational vibration isolation in industrial-grade finishing tools and specialized lawn and garden machinery
