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63 Series
Home Deep Groove Ball Bearings 63 Series

6306 Open Deep Groove Ball Bearing for Medium-Duty Industrial Applications | 30×72×19 Mm

6306 Open Deep Groove Ball Bearing for Medium-Duty Industrial Applications | 30×72×19 Mm

The 6306 is a Single Row, Medium Series Deep Groove Ball Bearing engineered for robust performance and versatility across a wide range of industrial applications. As an open-type bearing without integral seals or shields, it provides maximum design flexibility for custom sealing arrangements and optimal heat dissipation. With a 30 mm bore and a substantial 19 mm width, it offers a balanced combination of high load capacity and dimensional stability, making it a reliable choice for demanding machinery and power transmission systems.

6306 Deep Groove Ball Bearing 30×72×19 mm | ISO 63 Series – Medium | Open Type (No Seals/Shields)

Built on a proven deep groove design, this bearing delivers smooth operation under both radial and axial loads at speeds up to 14,000 r/min (Oil). With optimized internal geometry and durable construction, it provides high dynamic and static load ratings, ensuring dependable performance in applications where flexible lubrication and sealing options are essential.

6306 Open Deep Groove Ball Bearing for Medium-Duty Industrial Applications | 30×72×19 Mm

Comprehensive Applications

Suited for a broad spectrum of medium-duty industrial and mechanical systems:

General Industrial Machinery
  • Electric Motors and Generators (AC/DC)
  • Gearboxes and Reduction Units
  • Pumps, Compressors, and Blowers
  • Conveyor Drive Pulleys and Idlers
Agricultural & Construction Equipment
  • Tractor Implement Drives
  • Small Construction Machinery Transmissions
  • Agricultural Sprayer Pumps and Fans
  • Rotary Tiller and Cultivator Drives
Material Handling & Power Transmission
  • Industrial Fan and Blower Shafts
  • Drive Shaft Supports and Couplings
  • Rolling Mill and Machine Tool Accessories
  • Paper and Printing Machine Rollers
Automotive & Vehicle Components
  • Automotive Alternators and Starter Motors (where specified)
  • Truck Clutch Release Bearings
  • Utility Vehicle Transmission Supports
  • Industrial Wheel Hubs and Axles

Key Performance Features

01. Adaptable Open Structure for System Design

The open design facilitates implementation of application-specific external seals and allows selection from a wide variety of grease or oil lubrication methods, offering engineers superior design versatility.

02. Precision Manufacturing for Consistent Operation

Precision-crafted raceways and balls reduce friction and vibration, promoting smooth running, energy efficiency, and stable performance across various industrial environments.

03. Enhanced Durability with Medium-Series Construction

Featuring a medium cross-section and chrome steel construction, the 6306 sustains significant radial and moderate axial loads, providing long-lasting reliability in demanding operational settings.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series – Medium
Basic Designation 6306
Suffix Open Type (No Seals/Shields)
Bore Diameter (d) 30 mm
Outer Diameter (D) 72 mm
Width (B) 19 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Steel Stamped
Dynamic Load Rating (Cʳ) 7.8 kN
Static Load Rating (C₀ʳ) 4.2 kN
Limiting Speed (Grease) 9,000 r/min
Limiting Speed (Oil) 14,000 r/min
Weight (approx.) 285 g

Interchange Part Numbers

Common manufacturer equivalents include:

  • SKF: 6306
  • NSK: 6306
  • FAG: 6306
  • NTN: 6306
  • KOYO: 6306

Design & Configuration

The 6306 is provided as a standard open bearing, offering a versatile platform for systems employing external housings or tailored sealing solutions. For environments requiring inherent protection, sealed (6306-2RS) or shielded (6306-ZZ) versions are offered as alternatives.

"As a core high-performance element in industrial machinery, the 6306 delivers established reliability, substantial load capacity, and the adaptability necessary for varied mechanical systems and applications."

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Request a Quote for Ball Bearings

Request a Quote for Ball Bearings
Please submit your inquiry below for detailed product and pricing information. We will get back to you within 24 hours.
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