ZKLDF100 Bi-directional Thrust Angular Contact Ball Bearing

Model Designation

• ZKLDF: Series designation for double-direction thrust angular contact ball bearings with bolt mounting and sealing covers on both sides.
• 100: Bore designation, corresponding to a 100 mm bore diameter.
• Suffix B (e.g., ZKLDF100-B): Indicates a product generation or version and serves as a model identifier without changing the bearing’s fundamental performance characteristics.
  
  

Structural Features

Double-Row Balls with a 60° Contact Angle: The bearing consists of one integral outer ring, two inner rings, two rows of balls, and cage assemblies. Its 60° contact angle design enables it to accommodate radial loads, bidirectional axial loads, and tilting moments simultaneously, providing excellent axial load-carrying capacity.
Bolt-Mounted Design for Easy Installation: Mounting holes are pre-machined into the inner and outer rings, allowing the bearing to be secured directly with bolts without requiring additional flanges or pressure plates. The bearing is pre-assembled as a complete unit with connecting bolts before delivery, simplifying transportation and on-site installation.
Double-Sided Seals and Pre-Lubrication: Sealing covers on both sides help prevent dust and contaminants from entering the bearing while reducing grease leakage. The bearing is factory-filled with compound barium-based grease. Additional grease can also be supplied through the lubrication hole in the outer ring, making routine maintenance straightforward.
Brass Cage: The specially designed brass cage provides high mechanical strength and helps reduce frictional torque, supporting stable operation under high-speed conditions.
High-Speed Performance: Equipped with rolling steel balls and an optimized cage design, the bearing offers a limiting speed of up to 5,000 r/min, significantly higher than that of crossed roller bearings of comparable size. This makes it suitable for high-speed precision rotary table applications.

Applications

ZKLDF100 is suitable for high-speed, high-precision rotary applications requiring high rigidity, including:

• Machine Tools: CNC rotary tables, milling heads, grinding heads, and honing heads.
• Precision Measurement: High-accuracy measuring instruments and various precision testing devices.
• Medical Equipment: Rotary assemblies in precision medical instruments.
• Industrial Automation: High-precision rotary tables, indexing mechanisms, and reversible fixtures.