A 38,470-KW TWIN-INPUT GEAR SET FOR AN ICEBREAKER

Renk recently dispatched from their Augsburg works the second of a pair of twin-input single-output gear sets, the largest of this configuration to date. The article describes these gears, which are for an icebreaker that is to operate for Dome Petroleum in the Canadian High Arctic; designated ASM 2 x 260, each set will transmit power from two MAN 16V 52/55 engines, each of 12,825 kW at 450 rpm, to a 7.2m diam. c.p. propeller running at 85 rpm. Each of the sets is designed to transmit 38,470 kW, giving a 50 p.c. margin for shock loading. With its separate thrust block, each set weighs 160 tonnes. Features of these gear sets include: a through-hardened fabricated 4395mm diam. main wheel <too large for available case-hardening and grinding facilities>; pinion teeth solid with their shafts and case- hardened; shafts arranged to remain parallel even if deformation of the ship's seatings, due to ice pressure, etc., should occur <the method of achieving this is described>: multi-plate clutch with tandem sets of plates; individual cast-iron bearing seats, enabling final alignment for tooth load pattern and bearing contact to be done with shims; checking devices, supplied with the gears, for monitoring slip and tooth root stress, so protecting both the gearing and the elastic couplings adjacent to the engines.

  • Supplemental Notes:
    • Shipbuild. Mar. Engng. Intl., 106 <1983>, p.179 <Apr.> (2 pp., 3 diag., 4 phot.)
  • Publication Date: 1983

Language

  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00685088
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM