81103Cylindrical Roller Thrust Bearings

81103 Thrust Cylindrical Roller Bearing | 81103TN And 81103M Cage And Application

The 81103 is a high-performance single-direction thrust cylindrical roller bearing with standard dimensions of 17×30×9mm. Specially designed to withstand pure unidirectional axial loads, this bearing features high structural rigidity, minimal deformation and stable low-speed operation. It effectively limits shaft axial displacement, absorbs continuous thrust pressure, and maintains precise mechanical positioning during long-term cyclic work. Thanks to its cylindrical roller layout, the 81103 delivers higher axial load capacity and lower friction loss than conventional thrust bearings, making it ideal for low-speed, heavy-thrust industrial systems. The series includes two mainstream models: 81103TN with nylon cage and 81103M with solid brass cage for diverse working conditions.

81103TN Bearing (Nylon PA66 Cage)

81103TN adopts a high-strength injection-molded PA66 nylon cage, serving as the standard and cost-effective version for general industrial environments. The lightweight nylon retainer features excellent toughness, low friction coefficient and outstanding anti-fatigue performance. It ensures smooth and accurate roller circulation, effectively reducing running noise and frictional heat during continuous operation. With good lubricity and corrosion resistance, the nylon cage prevents rigid abrasion and prolongs grease service life. Suitable for clean environments with medium temperature and standard loads, 81103TN provides stable and economical operation for conventional precision thrust machinery.

81103M Bearing (Solid Brass Cage)

81103M is equipped with a precision machined solid brass cage, designed for heavy-duty and harsh working scenarios. The high-rigidity integral brass cage offers superior high-temperature resistance, structural stability and impact resistance compared with nylon materials. It maintains precise roller spacing and complete structural stability under high temperature, instantaneous heavy thrust loads and long-duration uninterrupted operation. This structure effectively avoids roller skew, deformation and premature wear, greatly improving bearing reliability and service life. 81103M is the preferred solution for critical core equipment requiring zero-failure operation in complex and rigorous industrial conditions.

Bearing Material And Structural Advantages

All 81103 series bearings adopt high-purity chrome bearing steel as the base material. After integral quenching and ultra-precision grinding, the raceways and cylindrical rollers obtain high surface hardness, excellent wear resistance and stable mechanical performance. The flat raceway structure ensures uniform force distribution and avoids local stress concentration. Its compact and high-rigidity structure supports large axial thrust loads with tiny elastic deformation, ensuring accurate shaft positioning and long-term stable operation of mechanical equipment.

Industrial Applications

81103 thrust cylindrical roller bearings are widely used for unidirectional axial load support and shaft limit positioning. 81103TN is suitable for precision instruments, small gear reducers, automated sliding machinery and general light industrial transmission equipment. 81103M is widely applied in high-temperature processing machinery, hydraulic systems, mining auxiliary equipment and heavy-load transmission devices that demand high stability and long service life.

Product Summary: The 81103 bearing features high rigidity and powerful axial load capacity for precision thrust systems. 81103TN provides low-noise, cost-effective stable performance for standard working environments, while 81103M offers high-temperature and anti-shock durability for harsh conditions, fully covering mainstream precision heavy-thrust industrial application scenarios.