EB2.25.0821.200-1SPPN

EB2 Series ext.toothed
  • EB2 Series ext.toothed
  • EB2 Series ext.toothed
  • EB2 Series ext.toothed
  • EB2 Series ext.toothed

EB2.25.0821.200-1SPPN-EB2 Series ext.toothed

The EB2 series consists of high-performance double-row ball slewing bearings with external gear configuration, specially engineered for medium-heavy duty rotary machinery that demands superior load capacity and integrated drive performance. Differentiated from conventional single-row slewing rings, this series adopts a dual-ball race layout and integrated external tooth structure, achieving optimized mechanical balance between structural rigidity, operational stability and transmission efficiency.


Typical Applications:

Medium to large cranes and excavators

Aerial work platforms and man lifts

Wind turbine yaw systems

Solar tracking arrays

Radar and antenna positioning systems

Heavy-duty industrial turntables


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

EB2 Series ext.toothed
Type :EB2.25.0821.200-1SPPN
Brand :LYMC
Drawing No. :Drawing 1
Dimensions
De[mm] :979
de[mm] :823
di[mm] :819
Di[mm] :718
Dx[mm] :935
He[mm] :92
Hi[mm] :92
Ht[mm] :102
Hd[mm] :86
Fixing Holes
Fe[mm] :893
Fi :753
N :36
V[mm] :21
L :31
W :15
Gear Data
m :10
z :94
xm :11
Dp :940
fz norm :7063
fz max :14126
Weight [KG] :200

Characteristics

✦ Double-row ball configuration – Two independent rows of balls arranged axially for enhanced load distribution.

✦ External gear on outer ring – Gear teeth cut directly on the outer ring for direct pinion engagement.

✦ Forged ring construction – Both inner and outer rings are forged and machined for high structural integrity.

✦ Induction-hardened raceways – Upper and lower raceways hardened for wear resistance and fatigue strength.

✦ Sealed raceway enclosure – Equipped with NBR rubber lip seals on both sides of each rolling chamber.

✦ Alloy steel ring material – Rings manufactured from high-strength alloy steel grades (e.g., 42CrMo4).


Features

✦ Higher load capacity – Double-row design handles significantly higher axial and moment loads than single-row types.

✦ Enhanced stability – Two load paths provide better resistance to tilting and uneven loading.

✦ Extended service life – Load distribution across two rows reduces stress on individual rolling elements.

✦ Smoother rotation – Optimized internal geometry ensures consistent, low-friction motion even under heavy loads.

✦ Reliable gear engagement – External gear teeth maintain strong, accurate pinion contact for power transmission.

✦ Longer maintenance intervals – Reduced per-element loading means less wear and longer lubrication life.


Further Reading