LYC Slewing Bearings
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PRODUCTS CATALOGUE

Jianxi District Luoyang in 1954 Facility Size:1,000,000 Square meter LYC Bearing Corporation was established in 1954. The technical expertise has evolved into engaging 3,000 plus engineering personnel and 12,000 manufacturing associates. The product range is divided into nine individual categories, with more that 10,000 different variants, the bearings range extends from ID'S of 8mm up to a maximum OD of 6.3 metres. As a world class bearing manufacturer LYC takes pride in their quality and maintain their quality assurance certifications, namely ISO 9001, ISO 9002, ISO LYC Extra-large...

The copyright of this catalogue is owned by permission is granted. Every cares has been taken to ensure the accuracy of the information contained in this catalogue but no liability can be accepted for any errors or • Structural Style • Designation Classification Method • Rust Prevention • Operational Maintenance

1.1 Basic Terms with Description and Nomenclature Radial Bearing 1. Center circle diameter of outer mounting holes 8. Outer gear 14. Oil hole 2.Rolling elements 9. Height difference between upper end face 15. Tooth width 3. Seals of inner ing and that of the outer ring 4. Raceway 10. Main thrust rollers 5 Center circle diameter of inner mounting holes 11. Cage (spacer) 6. Inner ring 12. Radial roller 7. Center circle diameter of rolling elements 13. Main thrust inner ring • Four point contact ball bearing, see Fig.1.3—Fig. 1. 5. • Cross cylindrical roller bearing, see Fig. 1.6^-Fig. 1. 8. •...

SLEWING BEARING Fig. 1.13 Three-row cylindrical roller Fig. 1.14 Three-row cylindrical roller combined bearing with internal gear combined bearing with external gear Fig. 1. 15 Double-row roller/ball combination slewing bearing with external gear Designation method of LYC slewing bearing has three types: This method is according to the standard JB/T 10471 <Rolling Bearing, Slewing Bearing designation consists of basic Where there are changes in seal, structure variation or technical requirements, it is then expressed by "K+ numerals", such as "K1", "K2". There should be a space between this...

Designation Example: 1— Gear quenched (suffix code) -Tolerance class 6 (suffix code) -Structure variation (suffix code) -Material 42CrMo, quenching and tempering (suffix code) -Center circle diameter of rolling elements 1600mm (basic designation) -Rolling elements diameter is 32mm (basic designation) -External gear, larger module (basic designation) -Cross-cylindrical roller bearing (basic designation) This designation method follows the original national standard. It consists of a prefix code, basic code and suffix code. This designation structure is referred to in Table 2.5 Part of...

SLEWING BEARING Horizontal axis refers to the equivalent axial load F carried by the slewing bearing, the vertical axis is the equivalent tilting moment M. Curve 1 refers to the allowable static load capacity limit curve, this shows that material of slewing bearing is stress is 3850MPa for a point contact Curve 2 refers to the dynamic load capacity limit curve; this shows that the rating service life of slewing A set of parallels indicate limit load capacity curve; this shows that the strength grade of bolts required should be Grade 8.8, Grade 10.9 and Grade 12.9, and that the connection...

3.3.1 Calculation of Equivalent Axial Load and Tilting Moment 3.3.1.2 The calculation of equivalent static load, equivalent dynamic load and equivalent tilting moment under fluctuating load. Fa'— Equivalent dynamic load underfluctuating load; Mo'—Equivalent tilting moment under fluctuating load; n.; n;: nj: ...n„ — Percentage of working time; Fa,: Fa2: Fas: ...Fa„ —Axial dynamic load within the percentage of working within the percentage of working 3.3.2 Safety factor and life calculation factor of static load, Fs. Fs — The safety factor of static load Faoc — The corresponding axial load of...

Service life prediction under fluctuating load: life within the percentage of working time 3.3.2.4 Estimation on Peripheral Force The estimation of peripheral force after quenching and tempering of the tooth 3.3.2.5 Strength Check of the Mounting In the load curve, the X-axis represents Fao, Y-axis represents Mo. The value the static working condition. The corresponding point of the cross point below the strength grade curve of the selected bolt. A bolt with a strength grade of 8.8 can be used in the working conditions, which requires strict and high endurance strength under frequent...

Careful selection of the type and grade design so as to guarantee that the bearing maintains a high degree of 4.1 Material for Bearing Rings Quality Carbon Structural Steel> or GB/T3077 <Alloy Construction Steel>, these steels are mainly used for slewing bearing rings. The hardness of the working surfaces such as the raceway surface may have after hardening, These surface hardness' ensure that the bearing has the desired load capacity. Other materials, which meet the performance, can also be specified. The parameter symbols of LYC slewing bearing dimensional tolerance and running accuracy...

Provided optimum lubrication and sealing systems is an essential measure to ensure that the bearings are running safely and avoid the potential of early failure. There are two methods for lubricating the slewing bearings, including oil lubrication and grease lubrication. The grease lubrication method not only provides a lubrication action, but has the additional advantages such as an additional sealing method with good adhesion and simple seal structure consequently, this lubrication method is widely used in practical applications. There are two main sections that require lubrication,...

intake point or the extract point. When re-lubricating, the old grease should be purged out by new grease that is being injected. After re-lubrication ensure that lubrication plug is placed back into the grease point. (For individual lubrication point) • Clean any residual grease from the inside of the bearings seal area. • Avoid the possibility of any ingress of dust, impurity, moisture to enter the The seal structure for a slewing bearing generally includes a rubber lip seal and metal labyrinth seal. Rubber seals have many advantages, such as their simple structure, small occupation of...