Gear Units for LNG Carriers
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Gear Units for LNG Carriers Dual-Fuel/Electric Propulsion

RENK - Leading Propulsion Technology Customized gear units for LNG carriers Dual-fuel/electric propulsion RENK marine gear units from Rheine #1 for LNG tankers RENK AG is among the world’s foremost manufacturers of marine gear systems and its plant at Rheine, Germany, which specializes in single- and twin-engine gear units as well as propeller shaft clutches, is a highly favored partner when it comes to developing innovative marine gear solutions for LNG tankers. The majority of all LNG tankers built with a dualfuel-diesel-electric propulsion system (DFDE) are using single and double marine...

RENK - Leading Propulsion Technology NDSH: double the value Single input/output Double input/single output single stage RSH are single-stage marine reduction gear units with one input and one output shaft. In most cases they are custom-made and increasingly being installed on twin screw LNG carriers with a dual-fuel-diesel-electric (DFDE) propulsion system. Flange, propeller shaft Pinion shaft Turning device Turning device Flexible coupling Pinion shaft Thrust bearing NDSH are single-stage marine reduction gear units with two input and one output shaft. Normally they are custom-made and...

RENK - Leading Propulsion Technology NDSH and RSH: ultimate reliability Design concept: Even under the iciest conditions Case hardened toothing: • Very compact design, • Decrease of pinion and main wheel • Very stiff housing, R • eduction of toothing width, • High addendum toothing, • Reduction of shaft centre distance • Minimized shaft centre distance, • Integrated thrust bearing at motor side Marine gear units from RENK feature precision-machined load-adjusted tooth gearing, very quit rotations under full and part loads and hence an extended durability. For maximum stiffness, their...

RENK - Leading Propulsion Technology Modern manufacturing processes and zero-compromise quality assurance 5 RENK supplies customized accessories for all applications. (1) Standby pumps (stand-alone) (2) Double filters (3) Turning devices (4) Gear-driven pumps At the production plants, RENK uses the latest manufacturing equipment. This include CNC machining centers for form grinding tooth flanks of up to 4.2 m workpiece diameter and hardening techniques for gearwheels of up to 3.2 m diameter. Preventive monitoring methods are applied in order to ensure a constant high product quality. Right...

RENK - Leading Propulsion Technology References NDSH-4000 Gear units for 155,000 m³/177,000 m³ For more than 100 LNG carriers, shipyards and owners trusting the proven reliability of RENK marine gear units (NDSH-3800 to NDSH-4200 and RSH-1950 to RSH-2050) LNG carriers Single-screw Propulsion: DFDE P = 2×14,860 kW n = 720/90.6 rpm i = 7.950 : 1 Shipowner: BP Shipping, 155,000 m³ Teekay, 155,000 m³ MOL, 177,000 m³ Shipyard: Hyundai Heavy Industries Hyundai Samho Heavy Industries Installing the big wheel (diameter around 3,600 mm) of an NDSH-4000 double marine gear unit LNG carriers built at...

RENK Aktiengesellschaft Rheine Plant Rodder Damm 170 48432 Rheine Germany Phone: +49 5971 790-0 Fax: +49 5971 790-208 Email: info.rheine@renk.biz