B series helical bevel gearbox is a completely new design. Outstanding innovations: More sizes with reduced variety of parts; Higher operational reliability combined with increased power capacity; Flanged output shafts facilitate assembly of gear reducer in confined spaces.  

B Series High Power Gear Units is a brand-new model of rigid tooth flank gear reducers with wide application areas, which has the feature of large torque range, a design of unit structure modulization capable of horizontal mounting and vertical mounting, three kinds of output shafts --- solid shaft, hollow shaft and hollow shaft with shrink disk. With carbureted high-strength good-quality alloy, the series has the feature of high-efficiency and long life-span, high permissible axial and radial loads, low noise, high reliability and compact structure and so on.

Torque Range:Up to 470000N.m 
Output speed:1.7～1200rpm 
Input power:2.2～5366kw 
Mounting solution: foot mounted,shaft mounted,shrink disk mounted.

Input:shaft with key-way,IEC flange;

Output:hollow shaft with key-way,hollow shaft with shrink disk;

Shaft arrangment: A,B,C,D (detailed please see catalogue)

characteristics:

1.Housing material:HT250 high-strength cast iron ;                  

2.Housing hardness:HBS190-240;

3.Gear material:20CrMnTi alloy steel,other materials requested:17CrNi2Mo,20CrNi4A                                

4.Surface hardness of gears:HRC58-62;                                 

5.Gear core hardness:HRC33-40;                                       

6.Input / Output shaft material:42CrMo alloy steel;                  

7.Input / Output shaft hardness:HRC25-30;                         

8.Heat treatment:tempering,cementiting,quenching.etc.;

9.Machining precision of gears:accurate grinding, 6-5 Grade;   

10.Noise (MAX):60~68dB;

11.Lubricating oil:GB L-CKC220-460, Shell Omala220-460;       

12.Temp. rise (MAX):40°C ;

13..Efficiency:94%~96% (depends on the transmission stage) ;

14.Temp. rise (Oil)(MAX):50°C;                                          

15.Backlash:≤20Arcmin;                                                       

16.Vibration:≤20μm;