020.40.1400 

020 Series two row bearing
  • 020 Series two row bearing
  • 020 Series two row bearing

020.40.1400 -020 Series two row bearing

The 020 Series double-row ball slewing ring is a non-geared rotary bearing designed for applications where rotational movement is achieved through alternative drive mechanisms or where the slewing ring serves purely as a load-bearing interface. Without gear teeth on either ring, this series offers a clean, streamlined profile that simplifies integration while delivering the full load-handling advantages of double-row ball technology.


Typical Application Areas:

Crane turntables where rotation is driven by hydraulic cylinders or independent pinion arrangements

Rotary platforms and indexing tables with external positioning systems

Wind turbine yaw systems where rotation is managed through active control mechanisms

Medical and inspection equipment requiring smooth, precise rotational movement

Radar and antenna positioning systems






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

020 Series two row bearing
Type :020.40.1400 
Brand :LYMC
Overall Dimension
D [mm] :1576
di [mm] :1224
H [mm] :160
Installation Dimension
La [mm] :1524
Li [mm] :1272
n1 :40
n2 :40
φ1 :26
φ2 :26
Structure Dimension
b :90
h :10
B :121
C :150
Di :1432
da :1436
Loading :5430
Weight :650

Characteristics

✦ Dual-row ball arrangement – Two rows of balls arranged in a back-to-back configuration with separate raceway grooves, providing a wide load-bearing base.

✦ Toothless ring design – Both inner and outer rings feature plain cylindrical surfaces without gear teeth, allowing for external drive integration.

✦ Integral load-transfer ribs – Each raceway is flanked by machined ribs that guide ball motion and prevent side-slippage under radial loads.

✦ Induction-hardened raceways – Rolling paths hardened to 55–60 HRC with a case depth of 2.5–3.5 mm for extended fatigue life.

✦ Ring cross-section – Features a balanced radial thickness with a height-to-width ratio of 2.5:1, optimizing resistance to both axial and moment loads.

✦ Heavy-duty seal grooves – Seal channels are designed to accommodate oversized NBR seals with a lip height of 4–5 mm for enhanced contamination exclusion.


Features

✦ Greater misalignment tolerance – The back-to-back ball arrangement allows the bearing to accommodate minor structural deflections without performance loss.

✦ Ball skew prevention – Integral ribs keep balls aligned, maintaining smooth rotation even during intermittent shock loading.

✦ Extended wear life – The deeper hardened case protects raceways from surface fatigue in high-cycle applications.

✦ Heavy debris protection – Oversized seal lips effectively block coarse contaminants, reducing maintenance frequency in dusty environments.

✦ Flexible drive connection – Toothless rings allow integration with belt drives, chain drives, or friction wheels without gear mesh constraints.

✦ Simplified spare parts inventory – The same plain ring design can serve multiple machine models, as no gear-specific matching is required


Further Reading