VULKAN RATO-DS Highly Flexible Couplings

VULKAN RATO-DS highly flexible couplings cover a torque transmission range of 6.3-160.0 kNm. The highly flexible RATO-DS coupling has been specially designed for the use in installations requiring a high level of torsional flexibility and medium level of misalignment capacity. Supplementing the “all-round” RATO-S, the RATO-DS has been developed to offer an application-oriented coupling design especially for rigidly mounted ship’s main propulsions.

RATO-DS

The normal misalignments caused by foundation deflections, thermal effects, etc., can be effectively compensated by the radial, axial, and angular flexibility of the RATO-DS. Dynamic safety was the primary consideration in its design, as reflected in the optimized element geometry, enhanced mechanical and thermal capacity, and the use of a friction-loaded bolt arrangement. Additionally, ventilation holes in the coupling’s metal components ensure efficient dissipation of any heat generated during operation.

VULKAN RATO-DS CouplingDimension Group Nominal Torque
(kNm)
Permitted Rotational Speed
(rpm)
RATO-DS211ZRATO-DS21106.32100
RATO-DS21118.0
RATO-DS211510.0
RATO-DS211610.0
RATO-DS21DZRATO-DS21D012.52100
RATO-DS21D116.0
RATO-DS21D520.0
RATO-DS21D620.0
RATO-DS231ZRATO-DS23108.02050
RATO-DS231110.0
RATO-DS231512.5
RATO-DS231612.5
RATO-DS23DZRATO-DS23D016.02050
RATO-DS23D120.0
RATO-DS23D525.0
RATO-DS23D625.0
RATO-DS251ZRATO-DS251010.01800
RATO-DS251112.5
RATO-DS251516.0
RATO-DS251616.0
RATO-DS25DZRATO-DS25D020.01800
RATO-DS25D125.0
RATO-DS25D531.5
RATO-DS25D631.5
RATO-DS271ZRATO-DS271012.51700
RATO-DS271116.0
RATO-DS271520.0
RATO-DS271620.0
RATO-DS27DZRATO-DS27D025.01700
RATO-DS27D131.5
RATO-DS27D540.0
RATO-DS27D640.0
RATO-DS291ZRATO-DS291016.01600
RATO-DS291120.0
RATO-DS291525.0
RATO-DS291625.0
RATO-DS29DZRATO-DS29D031.51600
RATO-DS29D140.0
RATO-DS29D550.0
RATO-DS29D650.0
RATO-DS311ZRATO-DS311020.01410
RATO-DS311125.0
RATO-DS311531.5
RATO-DS311631.5
RATO-DS31DZRATO-DS31D040.01410
RATO-DS31D150.0
RATO-DS31D563.0
RATO-DS31D663.0
RATO-DS331ZRATO-DS331025.01350
RATO-DS331131.5
RATO-DS331540.0
RATO-DS331640.0
RATO-DS33DZRATO-DS33D050.01350
RATO-DS33D163.0
RATO-DS33D580.0
RATO-DS33D680.0
RATO-DS341ZRATO-DS341031.51250
RATO-DS341140.0
RATO-DS341550.0
RATO-DS341650.0
RATO-DS34DZRATO-DS34D063.01250
RATO-DS34D180.0
RATO-DS34D5100.0
RATO-DS34D6100.0
RATO-DS391ZRATO-DS391050.01040
RATO-DS391163.0
RATO-DS391580.0
RATO-DS391680.0
RATO-DS39DZRATO-DS39D0100.01040
RATO-DS39D1125.0
RATO-DS39D5160.0
RATO-DS39D6160.0
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