Double row ball slewing bearings, used for tower crane

Model Number: 020.25.500 Brand Name: Wanda Key Specifications/Special Features: Wandaslewing bearing company limited is professional manufacturer and exporter of slewing bearing, slewing drives, which are mainly applied in port machinery, mining machinery, welding machinery, construction vehicles, modular vehicles, single or dual axis solar tracking systems, and small wind power systemsSlewing bearing/drives can bear axial force, radial force and tilting momentDiameter range of slewing bearing can be from 200mm to 5000mm for slewing drive, there are nine (9) different sizes available from 3 to 25" with more than 60 models to meet both regular and precise tracking requirements in PV, CPV and solar thermal power tracking fieldsFor detailed information download our catalogueWandadelivers custom-engineered solutions to customers in 34 countriesOur manufacturing standard is according to machinery standard JB/T2300-2011, we also has been found the efficient quality management systems (QMS) of ISO 9001:2008 and GB/T19001-2008
We devote ourselves to the R and D of customized slewing bearing with high precision, special purpose and requirements
Wandateam is committed to keep the spirit of continuous improvement and focus our strategy of strict quality control standards, quick response, prompt delivery
We look forward to working on all of our customer's growing demands
Our ability to optimize the bearing design for your specific needs is unparalleled and we will assist you throughout the design, manufacturing and implementation process

Double row ball slewing bearing has three seat ring, the steel ball and the spacing block can be directly arrange into the upper and lower races, two rows of upper and lower steel balls with differently diameter are fitted according to stress condition
This kind of open assembly is very convenient, for upper and lower bear raceway arc angles is 90, which can bear large axial forces and tilting moment
When the radial force is greater than 0.1 times the axial force need to be specially designed the raceway
Double row different ball slewing bearing's axial and radial size are relatively large and solid in structure, so it is specially for medium diameter tower cranes, truck mounted cranes
Loading and unloading machinery

Notes:
1. N1 is the NOS of lubricating holes, Oil cup M10x1JB/T7940.1-JB/T7940.2
Oil nipple's location can be change according to the user's application
2. N-Φ can change to tapped hole, diameter of tapped hole is M, depth is 2m
3. Tangential tooth force in form is max tooth force, nominal tangential tooth force is 1/2 of max one.
4. "K" is addendum reduction coefficient