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 Elecon
has developed a special purpose custom built gear box type SBN 2 * 570
- 705 S/SO and supplied to M/s. Jindal Seamless Tubes, Nasik for driving
7 Roll Stand Hot Sizing Mill for Stainless Steel, Pipe finishing.
The gear box is basically
designed to transmit power from Two * 340 KW, 750 rpm DC Motor with
a reduction ratio of 15.95:1. It consists of twin - double reduction
stages having two input shafts followed by cluster of 1:1 ratio gear
trains resulting into 7 output shafts which are rotating at the same
speeds, but having different direction of rotations.
The gears are made from
high tensile carburizing alloy steel, 17 CrNiMo6 as per DIN 17210 case
hardened to 60 ± 2 HRC and precisely ground to class of accuracy
6 as per DIN 3961 - 63. The output shafts are made from medium Carbon
Steel CK 60 N as per DIN 17200 of adequate size to withstand heavy load
transmission for better rigidity without undue deflection.
The shafts are supported
in Anti-friction Spherical Roller Bearings of adequate size to take
care of radial as well as axial loads permitting large degree of freedom
against misalignment.
The Forced Lubrication
System is supplied along with the gear box incorporating various monitoring
and inter-lockig for temperature pressure, flow rate, etc. to achieve
smooth and trouble free operations during load transmission.
Technical Specifications :
The shafts are supported
in anti-friction spherical roller bearings having ample dynamic capacity
to give better working life and flexibility against misalignment.
Separate motor driven lubrication
system is provided to enhance cooling as well as lubrication of bearings
and tooth meshes with all necessary control & monitoring devices
for pressure, oil flow, oil level, and clogged condition of filter elements
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