Speed increasing gear box of 90m finishing mill
Composition of speed increasing gearbox
Spare parts of speed increasing gearbox case(lower case, middle case and cover), support base, big gear, transmission axis, bevel wheel and lubrication system.
Technical characteristics
Box is melt with thick steel with great quality to reach the intensity that the case required. Case should take stress aging treatment before the produce to reach the stability that required.
Big gears and gear shaft used carbon alloy steel forging blank, after roughing, workpiece need to take ultrasonic flaw detection process to quench. In order to ensure the tooth surface with high hardness, tooth surface need to take carburizing and quenching treatment after semi-finishing. Fine grind of tooth surface to insure the high accuracy, after finishing the production of gear, the balance test is needed, the experience speed is 1500r/min and the balance level is G2.5.
Transmission shaft use the alloy steel forging blank, transmission shaft takes quenched to make sure the intensity and durableness. After the semi- finishing, transmission need to grind to guarantee the accuracy of every workpiece.
When the assemble finished, the no-loading test should be keep 2-4hours, the speed is 1200r/min, the temperature of shaft should not exceed 60º C, the work of gear should be smooth, no hitting noise and concussion, every joint surface should not have oil spill phenomenon.
| Item |
Bevel gearbox for 90m finishing mill group |
| After Sales Service |
Engineers Available to Service Overseas |
| assembled shaft speed |
4550 r / min |
We provide:
1. Perfect rolling mill solutions including rolling passes design, production line setup, and workshop layout according to customer's requirements.
2. Sophisticated rolling mill stands and auxiliary equipments/spare parts used in the rolling mill production line. (Such as roller box, gearbox reduction, coil laying head, vertical and side loops, flying shears, chopping shears and gripping shears, pinch roll machine and so on)
3. Technical services and post-sale technical supports.
4. Professional engineers available for overseas installation and maintenance.
5.Also we have the cooperate factory with the melting furnace ,reheating furnace etc.
Audited Supplier 
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