Shaanxi, China
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Gearbox, Gear, Gear Box manufacturer / supplier in China, offering Speed Increasing Gear Box of 90m Finishing Mill-111702, 3# Flying Shear HS-FS0713, 90m Finishing Mill Group HJ-FMG9001 for Hot Rolling Mill and so on.

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Supplier Homepage Products Metal Casting Speed Increasing Gear Box of 90m Finishing Mill-111702

Speed Increasing Gear Box of 90m Finishing Mill-111702

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Min. Order: 1 Piece
Payment Terms: L/C, T/T
Casting Method: Special Casting
Casting Form Material: Metal
Casting Metal: Cast Steel
Casting Form Usage Count: Disposable
Surface Treatment: Electroplating
Surface Roughness: Ra1.6

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Basic Info

Model NO.: HJ-111702
Coating: Zinc oxide
Machining Tolerance: +/-0.15mm
Standard: GB
Certification: RoHS, ISO 9001:2008

Product Description

Composition of speed increasing gearbox
Spare parts of speed increasing gearbox case, support base, big gear, transmission axis, bevel wheel and lubrication system.
Technical characteristics
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.
 Highest speed output ratio  45/157=0.2866
 Lowest speed output ratio  60/157)x(55/60)=0.3503
 Motor power  4500kW
 Motor speed  1000/1300r/min
 High-speed output shaft speed  4019r/min
 Low-speed output ratio  3288r/min
 Gear meshed speed  77.2m/s
 The backlash is less than  0.36mm

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