033.45.2221.03K1 2.0MW Pitch Bearing/blade Bearing

033.45.2221.03K1 2.0MW pitch bearing/blade bearing

033.45.2221.03K1 2.0MW pitch bearing/blade bearing

1.Material: V-notch specimen test average value under -40 ℃ should not be less than 27J.

2. Clearance: Blade bearings clearance is "negative clearance". Yaw bearings clearance can be either” negative clearance", or positive clearance(0-0.05mm).

3. Anticorrosion: sandblasting and zinc coating should be applied consequently, the layer thickness should be 60 ~ 200μm. The outer diameter surface should be sealing treatment with painting.

4. Sealing: anti-aging, high / low temperature resistance, well sealed, non-flaking and non-leakage. Normally, the German brand Simrit common used. 

5. Starting moment: generally, the starting moment measurement under the condition is at the rotating speed > 0.1rpm, temperature 15 ℃ ~ 20 ℃ with empty loading. Starting moment should be controlled to start at a specified range. Starting moment value can indirectly reflect the size of the internal clearance, which is the key to guarantee the normal work of the bearing. The starting moment should be test on the testing machine. And this is necessary for each bearing.. In some applications, the simulative test is required.

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