6311 Open Deep Groove Ball Bearing 55×120×29mm Single Row Heavy Load Bearing For Motors Conveyors Machinery GQZ

• 6311 is a single-row open deep groove ball bearing with dimensions 55×120×29mm. It features a wider cross-section and higher load capacity compared to 6211 series bearings. This bearing can withstand combined radial loads and bidirectional light axial loads. The standard version is open type, while sealed 6311-2ZR / 6311-2RSR can be customized. Made of high-purity GCr15 chrome bearing steel, it runs stably at medium speed and is widely used for medium-heavy industrial transmission equipment.

*Send inquiry to get complete technical datasheet and latest factory price of 6311 bearing.

• Wide-section design delivers stronger radial load capacity than 6211 standard bearings
• Open type as standard; 2ZR metal dust shield & 2RSR rubber contact seal optional
• Standard C0 normal clearance, C3/C4 enlarged clearance available for high-temperature/tight-fit conditions
• Stamped steel cage with low friction torque, stable rotation and low vibration
• Accepts radial load plus light bidirectional axial load
• Pre-greased for easy installation and low maintenance cost

• Large industrial motors and ventilation fans
• Conveyor systems and roller transmission equipment
• Agricultural processing machinery
• Air compressors and small pumps
• Mining light-duty transport equipment
• General heavy-duty mechanical transmission devices

• High-grade GCr15 bearing steel with strict heat treatment to guarantee hardness, wear resistance and long service life.
• Precision ground raceways ensure flexible rotation and low noise operation.
• Complete options: open type, 2ZR, 2RSR, multiple clearance grades (C0/C3/C4) and P0/P6 precision.
• Mass stock for standard deep groove bearings, support sample testing and bulk wholesale with fast delivery.
• Provide OEM laser marking, customized packaging and professional bearing matching technical consultation.

*Contact our technical team to select seal type and clearance grade matching your working conditions.

*Sufficient stock for standard deep groove ball bearings, enjoy fast bulk order shipment.