ZBL.20.0644.201-2SPTN

ZBL.20. ZBL.30 Light bearing
  • ZBL.20. ZBL.30 Light bearing
  • ZBL.20. ZBL.30 Light bearing
  • ZBL.20. ZBL.30 Light bearing
  • ZBL.20. ZBL.30 Light bearing
  • ZBL.20. ZBL.30 Light bearing

ZBL.20.0644.201-2SPTN-ZBL.20. ZBL.30 Light bearing

The internal gear with outer flange slewing bearing is a versatile rotational component engineered to meet the demands of equipment requiring a protected drive arrangement and a sturdy mounting interface. This design incorporates an internal gear on the inner ring and an outer flange on the outer ring, providing a practical solution for applications where the drive pinion must be housed within the bearing envelope while maintaining a secure, flange-based attachment to the supporting structure.



Application Areas:

  • Compact crane turntables and winch drives

  • Aerial work platforms and lifting equipment

  • Solar tracking systems requiring protected gearing

  • Light to medium-duty industrial turntables

  • Packaging and handling machinery



High load-carrying capacity
Resistance to high and low temperatures
Noise-free operation
Strictly controlled tolerances and appropriate internal clearance
Long service life and low maintenance requirements
Prevention of unexpected downtime (avoiding bearing fracture, seizure, and safety incidents caused by such failures, with anti-tilting capability)

Dimension and Parameters

ZBL.20. ZBL.30 Light bearing
Type :ZBL.20.0644.201-2SPTN
Brand :LYMC
Drawing No. :Drawing 2
Dimensions
De [mm] :747 -0,13
de [mm] :683
di [mm] :645,5
V [mm] :641-0,13
Di [mm] :546
Fixing Holes
Fe [mm] :720
Ne :12
Fi [mm] :605
Ni [mm] :18
Gear Data
m :6
Z :93
Dp [mm] :558
Fz norm :18,7
Fz max :37,4
Weight [KGS] :46

Characteristics

  • Combined load capability: Handles axial, radial, and tilting moment loads simultaneously

  • Integrated outer flange: Simplifies mounting and reduces component count

  • Protected gearing: Internal gear teeth are shielded from external contamination and damage

  • Space-saving design: Allows the drive pinion to be positioned within the bearing envelope

  • Rigid connection: Flange provides direct, stable load transmission

  • Smooth rotation: Optimized raceway geometry ensures consistent, reliable motion


Features

  • Simplifies assembly in confined spaces – The outer flange allows direct mounting to machine frames without requiring access to the bearing's inner side.

  • Protects the gear train – Internal gear placement shields teeth from external impact, reducing damage risk during operation.

  • Allows hollow-shaft routing – The open inner ring accommodates cables, shafts, or fluid lines through the center.

  • Reduces exposed pinch points – Internal gear eliminates external meshing hazards, improving operator safety.

  • Enables compact drive layouts – The pinion can be positioned inside the ring, saving external space.

  • Improves sealing reliability – The flange-mounted outer ring provides a stable sealing surface, minimizing leakage paths.


Further Reading