Zklf2068-2rs-Xl Ina

ZKLF2068-2RS-XL INA Axial Angular Contact Ball Bearing

The INA ZKLF2068-2RS-XL is a high-precision double direction angular contact thrust ball bearing with 2RS rubber seals, engineered for combined axial and radial loads in compact machine assemblies. This INA ZKLF series bearing features XL extended life design for enhanced dynamic load rating and reliable running performance.

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Technical Data Sheet: INA ZKLF2068-2RS-XL Angular Contact Ball Bearing
The INA ZKLF2068-2RS-XL is a high-precision double direction angular contact thrust ball bearing with 2RS rubber seals, engineered for combined axial and radial loads in compact machine assemblies. This INA ZKLF series bearing features XL extended life design for enhanced dynamic load rating and reliable running performance.
Dimension Specifications: Bore diameter d=20 mm, outer diameter D=68 mm, overall width B=32 mm. Chamfer dimension r=0.6 mm, tolerance class P4 precision grade. Axial internal clearance is pre-set for high stiffness operation; integrated sealing structure prevents contamination ingress and grease leakage.
Material Configuration: Inner ring and outer ring: 100Cr6 high-carbon chromium bearing steel, quenched hardness HRC 60–64, excellent wear resistance and contact fatigue strength. Rolling elements: 100Cr6 steel balls. Cage: Glass-fiber reinforced polyamide PA66, offering low friction, high dimensional stability and good fatigue resistance. 2RS contact seals are made of nitrile rubber (NBR) with moderate oil resistance for general industrial environments.
Core Manufacturing Processes: Raw steel undergoes isothermal forging to refine grain structure and eliminate internal defects. Turning creates near-net-shape profiles. Vacuum quenching and tempering achieve uniform hardness and minimal distortion. Precision grinding controls raceway geometric tolerances, followed by superfinishing to reduce surface roughness, lowering friction and rolling contact stress. Final assembly and seal installation ensure consistent preload and sealing performance.
Service Life: Calculated per ISO 281 standard. Under standard operating conditions: 100 rpm, clean lubrication, moderate combined axial-radial load, the nominal rating life L10 reaches 18,000 operating hours. Service life is affected by load magnitude, alignment accuracy, lubrication status, temperature and particle contamination.
Typical Applications: Widely used in machine tool rotary tables, precision indexing heads, automation rotary actuators, packaging machinery and medical processing equipment. Its high axial rigidity and compact cross-section make this INA ZKLF2068-2RS-XL bearing ideal for units requiring precise positioning under heavy axial loads.
Maintenance Guidelines: Perform inspection every 2000 operating hours. Recommended lubricant: lithium-based grease; refill quantity 25–30% of internal free volume. Keep sealing surfaces clean. Check for abnormal noise, temperature rise or seal damage; stop operation immediately if defects are detected.
Installation Instructions: Clean all mating surfaces before mounting. Apply light grease to fitting surfaces. Use press-fit method, apply force only to the ring being pressed. Maintain strict shaft-housing alignment. Follow specified tightening torque for lock nuts. After assembly, run a no-load test to verify smooth rotation and temperature stability. Avoid hammer impact during installation to prevent raceway damage.

BRAND	FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI
BEARINGS NO.	ZKLF2068-2RS-XL INA
TYPE	Angular Contact Ball Bearings
Inner(d)mm	20
Outer(D)mm	68
Width(B)mm	28
WEIGHT/KG	0.61
EAN CODE	4012802 078640

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