Flat Thrust Needle Roller Bearing Made in China 81210 81211 81212 81213 81214 81215 81216 81217 81218 M TN(81212 60x95x26)

Flat Thrust Needle Roller Bearing

• 1.Core Structure: Consisting of a tight ring (tightly fitted to the shaft and rotating with it), a loose ring (fitted to the bearing housing and fixed in place), steel balls, and a cage (separating the balls to prevent collision), the assembly forms a flat disc shape. Its simple structure requires minimal installation space and eliminates the need for complex assembly procedures.
• 2.Load-bearing and Speed Characteristics: Capable of withstanding only unidirectional axial loads , unable to bear radial forces. Due to point contact between steel balls and raceways, the friction coefficient is relatively low, making it suitable for medium-to-low speed applications. At high speeds, centrifugal forces may cause ball wear, rendering it unsuitable for high-speed shaft systems.
• 3.Typical Application Scenarios: Primarily used in equipment requiring axial positioning, with limited space and moderate rotational speeds. Examples include: - Machine tool spindle ends (for auxiliary axial fixation) - Crane hooks (to withstand axial tensile forces) - Automotive transmission shift mechanisms (to transmit axial forces) - Bearings in small water pumps
• 4.Installation and Maintenance Guidelines: Ensure coaxial alignment between the tight ring, shaft, and bearing housing during installation. Significant misalignment will accelerate ball wear. Regularly apply lithium-based grease to reduce friction between balls, retainers, and raceways. After prolonged inactivity, inspect lubrication status before restarting to prevent dry friction-induced failures.