Double-Row Deep Groove Ball Bearing

Brand: SKF
Item Number: 4306ATN9 SKF
EAN: 7316577004581
Category: Deep Groove Ball Bearing – Double Row

Inner dimension: 30,000 mm

Outer dimension: 72,000 mm

Width: 27,000 mm

1. Product Properties

• Bearing Type: Double-row deep groove ball bearing
• Radial Internal Play: CN – Normal internal clearance
• Precision: Standard precision (suitable for general industrial applications)
• Cage Type:
• TN9 – Injection-moulded cage made of glass fibre reinforced polyamide 6.6, rolling-element centered
• Design Features:
• A – Double-row deep groove ball bearing without filling slots
• Lubrication: Standard lubrication (typically grease or oil depending on application)
• Heat Stabilization: No special heat stabilization – suitable for operating temperatures up to approx. 120 °C
• Special Treatment: None (standard version)

2. Technical Description

The SKF 4306 ATN9 is a double-row deep groove ball bearing, designed to provide:

• Higher radial load capacity than a single-row bearing of similar size
• Good performance under moderate axial loads in both directions
• Stable running and good alignment in compact arrangements

The double-row design essentially behaves like two single-row deep groove ball bearings arranged side by side, giving:

• Increased rigidity
• Better load distribution
• Longer service life in many applications

The TN9 polyamide cage offers:

• Low friction and quiet running
• Reduced heat generation at higher speeds
• Good guidance of the rolling elements

The “A” design indicates that the bearing is manufactured without filling slots, which helps maintain strength of the raceways and smooth load transfer.

3. Typical Applications

• Electric motors and industrial drives
• Gearboxes and transmissions
• Pumps, compressors, and blowers
• Conveyors and material handling equipment
• General machinery where higher radial load capacity is needed in limited space

4. Key Advantages

• Double-row construction → higher radial load capacity in compact form
• Deep groove raceways → can handle radial loads and moderate axial loads in both directions
• TN9 reinforced polyamide cage → low noise, low friction, and good high-speed capability
• Normal internal clearance (CN) → suitable for most standard fits and operating conditions
• Standard SKF quality → reliable performance and easy replacement with other 4306 ATN9 bearings

   PACKAGE INCLUDES: ONE (1) SKF Bearing 4306 ATN9