11-251255/1-03150

External Toothed 11 Series slewing bearing
  • External Toothed 11 Series slewing bearing
  • External Toothed 11 Series slewing bearing
  • External Toothed 11 Series slewing bearing
  • External Toothed 11 Series slewing bearing
  • External Toothed 11 Series slewing bearing
  • External Toothed 11 Series slewing bearing

11-251255/1-03150 -External Toothed 11 Series slewing bearing

The LYMC Bearing11 series is a single-row, four-point contact ball slewing bearing featuring an external gear on the outer ring. This series belongs to LYMC’ S light to medium-duty product range and is designed for applications where compact dimensions, combined load capacity, and cost-effectiveness are key requirements.


Typical Applications:

Machine tools and robotics

Palletizers and handling equipment

Construction machinery such as cranes and excavators

Solar tracking systems

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

External Toothed 11 Series slewing bearing
Type :11-251255/1-03150
Brand :LYMC
Drawing No. :Drawing 5
Position :35
Dimensions And Weight
Outside Dia Outer Ring
Da [mm] :1398
Inside Diameter,Inner ring
di [mm] :1155
Inside Dia Outer Ring
Di [mm] :1257
Outside Diameter Inner Ring
da [mm] :1253
Weight
G [kg] :201
Mounting Holes
Pitch Arde Diameter Outer Ring
La [mm] :1316
Number Of Holes Outer Ring
na :42
Pitch Arde Diameter Inner Ring
Li [mm] :1195
Number Of Holes Inner Ring
ni :42
Gearing And Tooth Forces
Pitch Arde Diameter
do [mm] :1380
Module
M :10
Number Of Teeth
Z :138
Permissible Tooth Force
fz norm [kN] :43
Maximum Permissible Tooth Force
fzmax [kN] :76
Load Ratings
Static Dynamic
Co rad [kN] :1240
Co ax [kN] :3346
Crad [kN] :364
Cax [kN] :424

Characteristics

✦ Four-point ball contact – Single-row design handles axial, radial, and tilting moment loads simultaneously.

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

✦ Double-sealed – Equipped with seals on both sides to keep contaminants out and retain lubricant.

✦ Compact installation – Mounting holes on both rings allow direct bolting to adjacent structures.

✦ Induction-hardened raceways – Hardened rolling surfaces deliver wear resistance and long service life.

✦ Broad size range – Available in multiple diameters and configurations for medium to heavy-duty rotary applications.


Features

✦ External gear on outer ring – Direct pinion engagement for rotary drive.

✦ Four-point ball contact – Handles axial, radial, and moment loads together.

✦ Double-sealed – Seals on both sides keep contaminants out.

✦ Ready to mount – Pre-drilled holes for bolted installation.

✦ Hardened raceways – Wear-resistant for long service life.

✦ Wide size range – Fits medium to heavy-duty rotary applications.


Further Reading