Luoyang Longda Bearing Co., Ltd. is situated at the city of Luoyang, the ancient capitals of Nine Dynasties,which is specialized in designing,developing producing and selling the large-size,extra-large-size,slewing , non-standard and other special bearings.
With advanced science and technology, the company develops and manufactures various kinds of bearing products with inner diameter of over 100 mm according to the national standard,such as large-size and extra-large-size deep-groove ball bearings,angular contact ball bearings,single,double and four-row cylindrical roller bearings,spherical roller bearings,single,double and four-row tapered roller bearings,spherical ball bearings,thrust ball bearings,thrust roller bearings,slewing bearings,and split bearings.With a trade-mark of LDB,the products are widely used in the fields all over the country, such as port,machine tools,mining,metallurgy,power industry,medical,heavy machinery,coal machinery,cement machinery,petroleum exploration as well as national defence industry.With the right to handle the export,LDB’s products are exported far to some foreign countries and the company has been established a long-term trade-cooperative relations with the customers in India,Korea,Taiwan and other countries and regions.
The company always pays more attention to the quality,each procedure is tracked and monitored and there are quality record and file for each piece of bearing in order to ensure the qualified rate to reach 100%.The satisfactions of the customers are always our goals.
The company insists on the aims of Quality First and Credit First and we sincerely provide better bearings with high quality,best price and service.We are willing to cooperate with friends all over the world and together build a beautiful and bright future.
We are specialized in producing various kinds of large and ultra-large size slewing bearings. Our production is from O.D. 200mm to 6300mm.
1. Our main products:
4 point contact ball slewing bearing
double row ball slewing bearing
crossed roller slewing bearing
triple row cylindrical roller slewing bearing
ball and roller combination slewing bearing
large and ultra-large bearings.
2. Export experiences:
Our products have been exported to Czech Republic, UK, Norway, France, Germany, Spain, Italy, Netherland, Turkey, Iran, Israel, USA, Brasil, Thailand, Indian, Indonesia, Philippines etc.
We have established stable cooperation with our customers. These bearings are widely used in stacker reclaimer, excavator, ladle turret, precision machine, mining, offshore crane, submarine cable etc.
3. Materials & some technical points:
The materials we use for inner and outer rings are GCr15, GCr15SiMn, 20CrNi4A, 45#, 50Mn, 42CrMo. The raceway is treated with medium-frequeny induction hardening and the hardness is HRC55-63.
The surface hardness of inner and outer rings is HB229-269 after quenching and tempering. The depth of hardening layer is 3-5mm. The maximum depth we can achieve is 8mm.
4. Quality Control:
We have the strict quality control from the incoming of raw materials to the output of finished products. The complete doduments recorded the whole processing for traceability.
Certificate of raw materials
Certificate of forging rings
Certificate of Ultrasonic Testing
Certificate of Heat Treatment (quenching + tempering, hardening)
Certificate of teeth cut (if with gear)
Certificate of rolling parts (balls, rollers)
Report of final dimensional inspection
Slewing bearing Installation Instruction
Inside packaging: plastic film + kraft paper + blue tape;
Outside packaging: (Iron-reinforced) free-fumigation wooden crate
Ms Elva Sai
Luoyang Longda Bearing Co., ltd.
Hi-Tech Zone, South Tianjin Road, Luoyang, China
Tel: 0086 379 64985493
Fax: 0086 379 64924823
Cell: 0086 138 3880 4464
You may also be interested in: