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CAT Supplier Slewing Ring Bearing for Mobile Crane
Basic Info
Product Description
Product Description



lewing bearings are large-sized bearings which can accommodate a combined load, i.e., radial loads and tilting moment.

They are usually provided with holes for fixing bolts; internal, external or no gear; and lubrication holes and seals, which allow

a compact and economical arrangement. In additon they often enable the elimination of many components necessary in the

classical bearing arrangement.




Product Name
CAT Supplier Slewing Ring Bearing for Mobile Crane
Reference Number
EGSBM 852 590 80
For mobile crane
Gear Option
External Gear Only
Seal Type
Rubber Sealed
Single Ball Four point contact
B.C. Diameter
778.25 mm (Outer Ring)
634.75 mm (Inner Ring)
Outer diameter:
852 mm (33.54)
Inner diameter:
590 mm (23.23)
Ball Diameter
31.75 mm
80 mm (3.15")
Axial play:
0.00 mm~ 0.10 mm
Radial play:
0.00 mm~ 0.10 mm
Core hardness:
250 ~ 300 HB
Raceway Hardness:
55 ~ 62 HRC
Raceway Effective depth
≥ 3.5 mm
GB42CrMo (DIN42CrMo4/BS708A42/AISI4140)
EN 10204 2.2; EN 10204 3.1.B ; EN10204 3.1.C
Heat treatment
Quenching and tempering, 
raceway induction quenching
Operating Temperature
-40°C to +50°C
EP2 lithium lubricating grease
134.5 KGS
Place of Origin
Luoyang, Henan, China
API Q1 Certificate (American Petroleum Institute) Quality Assured Firm
Qualified to be used in Petroleum machinery equipment.
ISO9001:2008 Certificate
OEM Service, Customized Service, Design Service





Leadway facility manufactures large diameter ball and roller bearings, and our slewing bearings have proven effectiveness in many applications such as below: 


Combining compactness, accuracy, smooth operation with relative high rigidity, together with simple mounting and operation reliability are qualities that allow use of these bearing in all industrial branches.



Company Information

Shenyang Leadway Machinery Equipment Co., Ltd. is sales office, it is  the subsidiary corporation of Universal Industrial Products, Inc.(UIPI) which is a Slewing Bearing(Slewing Ring) manufacturer specializing in large diameter solutions in California. Universal Industrial Products, Inc.(Luoyang) is the facility of UIPI, with a very strict Quality Management System.


Leadway and UIPI builds slewing bearings to meet the OEM specifications of all major equipment manufacturers as well as fully custom solutions for companies in the construction machinery industry.


Production Process

Packaging & Shipping

When slewing ring bearings are ready for shipment, Leadway usually give a light coating of

preservative oil and packaged in a tire wrap of protective paper and a shipping container.


1st: plastic film
2nd: kraft paper
3rd: blue blet
4th: International Standard Wooden Case for by Sea or by Air


This provides adequate protection during the typical short-term storage in a protected area





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Contact us if you need more details on CAT Supplier Slewing Ring Bearing for Mobile Crane. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Slewing Bearing、Turntable Bearing. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Slewing Bearing Replacements > Kaydon Bearing

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