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Deep Groove Ball Bearings Supplier

Deep Groove Ball Bearings Supplier

Designed for High Speeds & Low Friction

Deep Groove Ball Bearings are the most widely used bearing type in the world. Characterized by deep, uninterrupted raceway grooves, they have a high degree of conformity between the balls and the raceways, allowing them to support radial loads and axial thrust loads in both directions.

Whether in unsealed configurations for circulating oil environments, double metal-shielded (ZZ) for high-speed grease retention, or double rubber-sealed (2RS) for harsh environments, BMT Impex supplies premium SAE 52100 high-carbon chrome steel ball bearings that maximize machine life.

Deep Groove Ball Bearings Category
Engineering Data Sheet

Technical Specifications & Sizing

Standard metric dimensional chart for popular deep groove ball series.

Bearing Model Bore (d) Outer Dia (D) Width (B) Dynamic Load (Cr) Static Load (Cor) Limiting Speed (Grease) Limiting Speed (Oil)
6200 2RS / ZZ 10 mm 30 mm 9 mm 5.1 kN 2.38 kN 22,000 RPM 32,000 RPM
6201 2RS / ZZ 12 mm 32 mm 10 mm 6.89 kN 3.1 kN 20,000 RPM 30,000 RPM
6202 2RS / ZZ 15 mm 35 mm 11 mm 7.65 kN 3.75 kN 17,000 RPM 26,000 RPM
6203 2RS / ZZ 17 mm 40 mm 12 mm 9.56 kN 4.8 kN 15,000 RPM 22,000 RPM
6204 2RS / ZZ 20 mm 47 mm 14 mm 12.8 kN 6.65 kN 13,000 RPM 19,000 RPM
6205 2RS / ZZ 25 mm 52 mm 15 mm 14.0 kN 7.85 kN 11,000 RPM 16,000 RPM
6304 2RS / ZZ 20 mm 52 mm 15 mm 15.9 kN 7.9 kN 12,000 RPM 17,000 RPM
6305 2RS / ZZ 25 mm 62 mm 17 mm 22.4 kN 11.5 kN 10,000 RPM 15,000 RPM

* Custom clearances (C2, C3, C4) and special grease lubrication are available upon request.

Engineering Insights

Bearing Nomenclature & Clearance Guide

Understanding the technical suffixes, clearance prefixes, and material ratings used in industrial procurement.

Suffix & Prefix Reference

  • 2RS / DDU: Double lip synthetic NBR rubber seals for moisture & dust exclusion.
  • ZZ / 2Z: Double pressed-steel non-contact shields for grease retention at high speeds.
  • K / N: Tapered bore (K) or snap ring groove (N) for specific mounting configurations.
  • M / Y: Machined brass cage (M) or pressed steel cage (Y) for heavy industrial loads.

Radial Internal Clearance (RIC)

  • C2 (Tight): Less than normal clearance. Used for high-precision shafts to minimize vibration.
  • CN (Normal): Standard fit for general industrial applications under normal temperatures.
  • C3 (Loose): Greater than normal clearance. Compensates for thermal expansion in electric motors.
  • C4 / C5: Massive internal space for kilns and gearboxes running at extreme temperatures.
Technical Guide

Bearing Selection & Sizing Guide

Critical engineering parameters, structure details, and operating limits to help you select the ideal component.

Design & Metallurgy

Manufactured from premium SAE 52100 high-carbon chromium steel, heat-treated for optimal dimensional stability. Radial raceways are precision-honed to super-finish tolerances to minimize rotational friction torque and operating noise.

Sealing Configurations

Available in three main variants: Open (unsealed for circulating oil systems), ZZ (non-contact metal shields for low-torque dust exclusion), and 2RS (double-lipped NBR seals for wet or high-particle environments).

Operating Limits

Engineered for high-speed radial loads and moderate axial thrust. Standard clearances range from tight C2 to loose C3/C4 for thermal expansion control. Operating speeds reach up to 32,000 RPM under oil-mist lubrication.

Target Environments

Common Industrial Applications

These bearings are engineered to deliver reliable rotation and support critical equipment in harsh sectors, including:

Electric Motors

Commonly used in household appliances, industrial motors, and generator rotors due to high speed compatibility.

Automotive Units

Provides support in alternators, gearboxes, and suspension pulleys, securing quiet and low-friction rotations.

Consumer Appliances

Used inside vacuum cleaners, washing machines, and air conditioners to maintain stable rotational dynamics.

Office Automation

Enables smooth mechanical motion inside printers, photocopiers, and conveyor sorters.

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FAQ

Frequently Asked Questions

Technical details, selection parameters, and service queries resolved by our engineering sales team.

ZZ bearings feature metal shields that provide basic dust protection with minimum friction, making them ideal for high-speed applications. 2RS bearings use synthetic rubber seals that provide hermetic sealing against dirt and moisture, but add slightly more rotational friction.
Yes, deep groove ball bearings are designed to handle moderate axial thrust loads in both directions in addition to heavy radial loads, thanks to their uninterrupted raceway grooves.
C3 clearance provides more internal radial play than Normal class. It is recommended for applications with tight shaft press-fits, high temperatures, or rapid starts, where thermal expansion would otherwise cause the balls to bind.