Payment & Shipping Terms:
|Material:||42CrMo 50Mn||Outer Dia:||955mm|
|Delivery Time:||25 Days||Package:||Strong Wooden Case|
VSI 250855 N China Slewing Ring With Teeth 955x710x80mm For Mining Equipment
|Description||VSI 250855 N slewing ball bearing|
|Outer diameter(OD)||955 mm|
|Inner diameter(ID)||710 mm|
|Package||Inside package: plastic film + kraft paper + blue tape; Outside package: standard export free-fumigation wooden case.|
|The delivery time||20-30 days|
|Service||Technology communicate with engineer, and if you need the assembly drawing,we can send to you|
Our bearing had exported to more than 20 countries.Such as France,Germany,USA,Spain,Chile,Mexico,Israel,Singapore,Brazil,Netherlands ,Sweden,Pakistan,Indonesia,Canada,Serbia,Hungary,Turkey,Austria
slewing bearing structure type list as following:
|Boundary size(mm)(dxDxH)||Teeth data|
|slewing bearing type||Outer diameter(mm)||Inner diameter(mm)||Height(mm)||d 0||m||z|
|VSA 250855 N||997||755||80||981||9||109|
|VSA 250955 N||1096||855||80||1080||9||120|
|VSA 251055 N||1198||955||80||1180||10||118|
Slewing bearing surface treatment :
We have 70 employees, with 10 experienced engineers and professional technicists. The most of Engineer from LYC and ZWZ brand factory, they had owned produce and design and after sales experienced to design the bearing.We can also design the drawing according to the bearing work condition to meet the customer requirement.
Equipped with advanced manufacturing CNC Machine and test instruments to insure the accurate tolerance , all bearings are of uniform marking and packing with superior quality, reasonable prices and perfect services. Meanwhile we can make the module to test the mounting hole.
All the bearing from the forging to assembly process,It will need to inspect step.For the bearing forging we will need to test the size and hardness and surface, for the lathe process and grinding process,first it will need to check by the worker ,and then the professional inspector will checking the size and accurate,The last step the monitor will inspect the size. It can insure zero defect.
The blanks of bearing rings are mainly made of rods and tubes, while the forging process is only applicable to rods. However, forgings are the most used blank materials in bearing manufacturing, and are suitable for large and medium-sized bearings. Forging can be divided into hot forging, cold forging and warm forging. Hot forging refers to processing above the re-crystallization temperature of the billet metal, warm forging is forging at a temperature not exceeding the re-crystallization temperature, and cold forging refers to forging at normal temperature.
The purpose of ferrule forging: 1. Through forging, obtain a blank with a size similar to the product, improve the utilization of metal materials, reduce the amount of machining, and reduce costs. 2. Forging can eliminate the internal defects of the metal, improve the structure, and thus increase the service life of the bearing.
General process of forging:
Bar material ,inspection, heating, blanking, secondary heating, forging, rolling,cooling, annealing, cleaning
Rough turning: Rough turning is performed according to the drawing of the turning process, and the cutting speed and cutting amount are strictly implemented according to the technical regulations (the general cutting speed is 5 rpm. The cutting amount is 10mm ~ 12mm).
2.2 Rough turning aging: After the rough turning of bearing parts is completed, three-point support and flat laying is not allowed (stacking is not allowed), and the precision turning processing can be performed after the aging time is not less than 48 hours.
2.3 Fine turning bearing parts When finishing turning, the cutting speed is 6 to 8 revolutions per minute, and the cutting amount is 0.3 to 0.5 mm.
2.4 Precision turning: In order to prevent the parts from deforming when the bearing parts are finally finished, the parts must be loosened to make the parts in a non-stressed state. The turning speed is 8 revolutions per minute and the cutting amount is 0.2 mm.
2.5 Cross and three-row roller slewing bearing inner ring special process: To prevent cross and three-row roller slewing bearing inner ring from deforming after heat treatment. The turning process must be performed in pairs, that is, the raceway is back-to-back processing. No cutting is performed before heat treatment, and cutting is performed after heating.
2.6 Finished car after heating: After the inner and outer rings of the bearing are heat-treated, the finished car turning process is carried out, and the technical procedures are the same as 2.3 and 2.43)
JINHANG Precision bearing is a professional bearing manufacturer, as one set of production and R & D, production, sales and service. We have a wealth of experience in the design, manufacture and sale of heavy and large slewing ring bearings, pinion, cylindrical roller bearing,tandem roller bearing, rotary table bearing,spindle bearing and non-standard bearings
Slewing bearing is one of our main products.
1. four point contact ball slewing bearing (no gear, external gear, internal gear);
2. two row ball slewing bearing (no gear, external gear, internal gear);
3. crossed cylindrical roller slewing bearing;(no gear, external gear, internal gear);
4. three row cylindrical roller slewing bearing;(no gear, external gear, internal gear);
5. crossed tapered roller slewing bearing; (no gear, external gear, internal gear);
6. ball and roller combined slewing bearing.(no gear, external gear, internal gear);
The slewing bearing will used following application:
Aerial Hydraulic Platforms • Antennas • Arc Furnaces • Band Conveyor • Blast Furnace Gas Cover • Casting Equipment • Construction Machinery • Container Spreader • Crane Wheel Bogie • Deck Cranes • EDS Scanner Excavators • Fifth Wheel / Trailer Bogie • Gantry Cranes • Ladle Turrets • Machine Tools • Mechanical Engineering Medical Equipment • Mixer • Mobile Cranes • Mooring station • Oﬀ shore Crane • Packaging or Bottling Equipment Paddle Wheel Bearings • Ship Loader/Unloader • Solar Energy Plants • Special Sales • Stackers/Reclaimers Swivel Bearings • Telescopes • Thruster • Tidal Energy Plants • Tower Cranes • Truck Mounted Cranes • Tunnel Boring Machines • Water Treatment Equipment • Wind Energy Plants
Contact Person: Mrs. Jean Yang
Tel: 0086 18037970383