Author: FINNJET HISTORICAL SOCIETY RY Main: GTS FINNJET Subject: RENK TACKE GEARBOX BASICS

Basic: This information sheet is about the second set of gearboxes installed in GTS FINNJET. These gearboxes allowed for mixed gas turbine and diesel-electric operations -> CODELAG. They also allowed an upgrade to GE LM2500 gas turbines which was not realized.

Requirements of upgrade:

• Operational safety and security must be increased considerably
• Increased power output with or without a future lengthening of the vessel
• Further fuel consumption efficiency
• Considerable noise level reduction
• Provisions for new gas turbine installation

Source: FHSry Archive B, Kvaerner Masa-Yards, Technology, K. Laukia / uki 91-09-12

Pre-order offer 91-09-11:

Size LxBxH: 3,865m x 4,5m x 4,1m Weight: 160 + 14 tons Basic price: 18.956.000DEM + Axial thrust measuring device 482.000DEM Aux systems: 646pcs, 1+2 lub. oil for 2 coolers gear, 1+2 lub. oil for 2 coolers clutch Monitoring systems: 1,264pcs (incl. PC equipment) Spare parts: 1,708 Change to new turbine: Not included Total price: 22.562.000DEM

Technical information:

Principle: Double-helical locked train No. of bearings: 25 No. of tooth contacts: 8 No. of shafts: 14 Friction clutches: 3 SS clutches: 2 Noise levels, Structure 10/20/30kn: 65/69/72dB Noise levels, Airborne 10/20/30kn: 84/87/90dB Efficiency GT: 96,3% Efficiency EM: 95,6% Efficiency GT+EM: 96,4% Change from FT4 to LM2500: SB: New idler + 2 bearings, BB: New pinion + RIM Axial bearings: Thrust pads Installation: Foundations: EM no changes, GT no changes, GB no changes Axial thrust measurement: Electrical-hydraulic system GT max: 27.600kW

Source: FHSry Archive B, RT WD and 89GB