Structural Design Features of B3SH12 77 313 Industrial Gearbox

1、 Transmission system design

Three stage deceleration structure: Belonging to the B3 series three-stage transmission model, the speed ratio covers 12.5~90, and 77.313 is in the standard speed ratio range of this series, suitable for heavy load conditions with large reduction ratios.

Fully ground hard tooth surface gears: Both cylindrical gears and spiral bevel gears use high-precision grinding technology, with a tooth surface hardness of HRC58-62, a meshing contact area of ≥ 90%, high transmission efficiency, and low noise.

Torque and power adaptation: The torque range covers 2.6-900kN · m, and the power adaptation is 4-5000kW, which can withstand moderate impact loads.

2、 Box and rigid design

Universal modular enclosure: realizes the design of parallel axis, orthogonal axis, vertical/horizontal universal enclosure, greatly reduces the types of components, and expands the adaptability of specifications.

Enhanced sound-absorbing structure: adopting a thickened sound-absorbing box structure, combined with a large surface area heat dissipation surface and a large fan, effectively reducing the overall temperature rise and operating noise of the machine.

High rigidity shell: With an increased thickness of the shell wall, the overall rigidity is strong and can withstand greater torque, making it suitable for heavy-duty impact scenarios such as mining and metallurgy.

3、 Shaft end and installation adaptation design

Multi form input and output: Input supports motor flange connection and shaft input; The output can provide various forms such as solid shaft, hollow shaft (flat key/expansion disk/spline connection), flange connection solid shaft, etc.

Full scenario installation method: supports various installation methods such as horizontal, vertical, swinging base, and torsion arm, adapting to different equipment layout requirements.

High reliability sealing and bearings: Using well-known brand heavy-duty bearings, combined with labyrinth seals and fluororubber oil seals, the dustproof level can reach IP66, suitable for high dust and harsh working conditions.

4、 Adaptive design for working conditions

Universal transformation capability: By adopting a universal design scheme, it can quickly transform into specialized non-standard gearboxes for industries such as mining, lifting, and metallurgy.

Expansion speed ratio capability: It can be combined with R, K, and S series reducers to further expand the speed ratio range and meet special working conditions.