The ZKLDF Rotary Table Bearing represents a specialized engineering solution designed for high-speed, precision machine tool applications requiring exceptional combined load support and rotational accuracy. Unlike conventional bearing systems, this advanced bearing technology integrates mounting capability directly into its structure, eliminating complex housing requirements while delivering superior performance in demanding industrial environments. With its unique angular contact ball configuration and reinforced ring design, the product addresses critical challenges in modern manufacturing where speed, precision, and reliability are essential.


The ZKLDF configuration features a sophisticated structural design optimized for precision applications. Its single-piece outer ring incorporates an L-shaped cross-section, while the two-piece inner ring assembly houses dual ball-and-cage arrangements in a back-to-back O-configuration. This architecture creates a 60° contact angle that effectively manages multi-directional loads.
The bearing's integrated mounting holes allow direct attachment to adjacent machine components. This eliminates traditional clamping rings and bearing housings, reducing assembly complexity and minimizing tolerance stack-up errors. The result is improved system rigidity and enhanced positioning accuracy.
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Model No.
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Inner Diameter (d) [mm]
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Outer Diameter (D) [mm]
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Height (H) [mm]
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Static Load Capacity (C0) [kN]
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Dynamic Load Capacity (C) [kN]
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Limiting Speed (Grease) [r/min]
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Application Scope
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YRT50
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50
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90
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25
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42
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18
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1500
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Small precision machine tools, robotic arms
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YRT80
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80
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140
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35
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125
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55
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1200
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CNC lathes, milling machines, precision measuring instruments
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YRT100
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100
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165
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40
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195
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85
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1000
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Horizontal machining centers, gear hobbing machines
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YRT120
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120
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190
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45
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280
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125
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800
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Vertical machining centers, precision grinders
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YRT150
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150
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240
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55
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480
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210
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600
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Large-scale CNC machine tools, heavy-duty precision equipment
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YRT200
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200
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310
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70
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850
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370
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500
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Heavy-duty machining centers, wind turbine generators (precision components)
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YRT250
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250
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380
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85
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1350
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580
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400
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Large-scale precision machinery, marine precision equipment
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Improved Stack Distribution
The double-row precise contact plan gives extraordinary load-carrying capacity over numerous bearings. The 60° contact point optimizes constrain transmission, guaranteeing steady operation beneath combined pivotal, outspread, and tilting minute loads. This setup keeps up auxiliary keenness indeed when hardware encounters energetic cutting powers or off-center stacking conditions.
Superior Speed Capability
Precision-ground raceways and optimized ball geometry diminish grinding and warm era. This empowers nonstop high-speed operation whereas keeping up dimensional steadiness. The bearing's warm characteristics avoid speed-related misshapening that can compromise machining accuracy.
Simplified Establishment Process
Direct mounting capability streamlines gear get together. The coordinates mounting gaps give secure connection without extra components. This decreases establishment time and kills potential sources of misalignment that can influence framework performance.
Maintenance Accessibility
Built-in oil sections encourage upkeep operations. The external ring highlights standardized oil focuses that permit exact oil conveyance to basic contact zones. This expands operational life and keeps up steady execution all through the bearing's benefit cycle.
CNC Machining Centers
In concurrent 5-axis machining operations, rotating tables must handle fast situating whereas supporting energetic cutting loads. The bearing keeps up geometric exactness beneath warm stretch, avoiding situating float that influences portion quality.
Precision Measuring Equipment
Metrology gadgets requiring sub-micron situating advantage from the bearing's moo breakaway torque. This guarantees smooth, stick-slip-free revolution fundamental for precise precise estimations and calibration procedures.
Industrial Computerization Systems
High-speed ordering tables and coordinate drive applications depend on the bearing's capacity to combine rotational speed with auxiliary inflexibility. This underpins overwhelming payloads whereas keeping up exact situating control.
Manufacturing Instrument Applications
Machine device shafts and rotating heads utilize the bearing's high-speed capability to accomplish ideal cutting parameters. The coordinates mounting plan decreases in general machine complexity whereas moving forward energetic response.
Surface Arrangement Requirements
Mounting surfaces must meet strict levelness resistances to guarantee appropriate stack dissemination. Surface wrap up ought to coordinate the bearing's accuracy review to maximize tilting inflexibility exchange. Appropriate surface arrangement anticipates localized stretch concentrations that can diminish bearing life.
Lubrication Management
Initial grease employments lithium-complex oil defined for high-speed applications. Relubrication interims depend on working conditions and speed variables. Legitimate grease amount avoids both insufficient grease and over-lubrication that causes churning losses.
Assembly Considerations
Factory-set preload must be kept up amid establishment. Never alter inward ring gathering screws, as this disturbs calibrated preload settings. Utilize indicated torque values for mounting jolts to anticipate installation-induced twisting.

Our manufacturing process incorporates 30 years of bearing industry experience and proven quality control systems. Each ZKLDF Rotary Table Bearing undergoes comprehensive testing including vibration analysis, dimensional verification, and performance validation. The three-level quality control system ensures consistent product reliability with an ex-factory qualification rate exceeding 99.9%.
Raw material selection focuses on high-purity bearing steels processed through specialized heat treatment cycles. Precision grinding technology achieves required surface finish and dimensional accuracy. Final assembly incorporates controlled preload settings verified through instrumented testing procedures.
Our engineering team provides comprehensive application support throughout the product lifecycle. This includes bearing selection assistance, installation guidance, and maintenance planning. On-site technical support addresses specific application requirements and ensures optimal bearing performance in your equipment.
For complex applications requiring custom specifications, our engineering capabilities support modified designs while maintaining proven performance characteristics. This flexibility ensures the bearing meets specific operational requirements without compromising reliability.
Contact our technical team at auto@lyautobearing.com for detailed application analysis and bearing selection assistance. Our engineers are ready to help optimize your equipment performance with the right ZKLDF Rotary Table Bearing solution.
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