Technical parameters, applications, and usage methods of NUKRE 90A bearings
1、 Technical parameters
Basic parameters
Type: Bolt type roller bearing (FAG brand)/deep groove ball bearing (INA brand)
Inner diameter (d): 90 mm (SKF brand variant)
Outer diameter (D): 30 mm (FAG brand) 4/unspecified (INA brand)
Thickness (B): 100 mm (SKF brand variant)
Performance characteristics
Function: Support mechanical rotating bodies and reduce transmission friction coefficient;
Sealing: Some models come with contact sealing (specific model needs to be confirmed);
Applicable scenarios: medium low speed, moderate axial/radial composite load.
2、 Application Fields
Industrial equipment
Pumps: metering pumps, centrifugal pumps, submersible pumps, etc. (INA brand);
Transmission system: Bolt type roller mechanism (FAG brand).
Special Machinery
Automation equipment: SMT machine, wire stripping machine (similar to INA NUKR90A application scenario);
Heavy machinery: rolling mill gearbox, crusher (refer to the scenario of thrust roller bearing adaptation).
3、 Usage and precautions
Installation requirements
Centering adjustment: avoid shaft deflection and local overload (refer to the rolling bearing installation manual);
Axial fixation: It needs to be matched with a retaining ring or locking nut (bolt type roller bearings need to be tightened with bolts).
Lubrication and maintenance
Lubricant selection: Choose grease lubrication or oil lubrication according to the load and speed (general recommendation);
Sealing maintenance: Regularly check the integrity of the seals (especially in dust/water vapor environments).
Load control
Axial load limit: Avoid exceeding the rated static load (C ₀), specific values need to be consulted in the brand manual;
Composite load scenario: It is recommended that the proportion of radial load be ≤ 55% (refer to the design specifications for thrust bearings).
4、 Compatibility and alternative models
Brand differences: INA, FAG, SKF products of the same series may have different parameters, and dimensional tolerances need to be checked;
Alternative suggestion: SKF NUKR90A (inner diameter 90mm) or INA NUKR90A (deep groove ball bearing) can be used as functional alternatives, but the load capacity needs to be verified.