Thrust Angular Contact Ball Bearing 5691/800 (Old Model:91681/800)

Description

Product Parameters

This bearing is a double direction thrust angular contact ball bearing, with the new model 5691/800 and old model 91681/800 (compatible with old standard installation requirements); its core dimension specifications are 800mm inner diameter, 950mm outer diameter, and 120mm height. It is made of GCr15 high-carbon chromium bearing steel with quenching and tempering treatment, featuring a surface hardness of HRC 58-62 (with high wear resistance and fatigue resistance), an applicable temperature range of -30℃~+120℃ (suitable for multi-condition environments), and a standard precision class of P5, which can meet the high-precision axial positioning needs of precision equipment.

Performance Features

1. Dual-Directional Axial Load Capacity for Complex Working Conditions

• Double-row ball + 60° contact angle design, capable of withstanding dual-directional axial loads simultaneously, with axial stiffness increased by over 30% compared to ordinary thrust bearings;
• Basic dynamic load rating reaches 3450kN, static load rating exceeds 8200kN, enabling stable support for heavy-load requirements of large equipment (e.g., rolling mills, hydraulic turbines).

2. High-Precision Rotation & Positioning for Equipment Stability

• Adopting precision grinding technology, axial clearance is controlled within 0.015-0.03mm, and combined with P5-class precision, ensuring positioning error ≤ 0.02mm for components such as spindles/lead screws;
• Separable shaft ring + housing ring structure, easy to adjust preload during installation (supports spring preload, hydraulic preload), further improving equipment rigidity and rotation precision.

3. Strong Environmental Adaptability for Extended Service Life

• GCr15 bearing steel undergoes carburizing treatment, with corrosion resistance superior to industry standards, and service life extended by 20% in dusty, humid and other industrial environments;

• Compatible with multiple lubrication solutions: Lithium-based grease (-30℃~+110℃) or ISO VG 46 medium-viscosity lubricating oil is recommended, with lubrication interval up to 500 hours/time, reducing maintenance frequency.

4. Low Noise & High Speed for Efficient Operation

• Optimized cage structure (nylon or brass material optional), reducing ball friction noise, with operating noise ≤ 65dB (no-load condition);

• Maximum speed reaches 200-340r/min (adjusted by lubrication method), meeting medium-high speed operation needs of large transmission equipment.

 

Product Applications

• Precision Machine Tool Field: Axial support for ball screws of CNC lathes and machining centers, ensuring cutting precision;

• Heavy Industry Field: Transmission systems of metallurgical rolling mills and mining crushers, withstanding dual-directional heavy loads;

• Energy Equipment Field: Main shafts of hydraulic turbines and wind turbines, suitable for outdoor complex working conditions;

• General Machinery Field: Axial positioning of large reducers and presses, improving equipment operation stability.