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B4JH B5JH

Product catalog summary

Model Overview: The B4JH and B5JH models are marine motors with power capabilities up to 4,000 kW and voltages up to 6,600 V. They are designed for various applications including propulsion, thrusters, dredge pumps, hybrid machines, and PTO-PTI systems.

Specifications: These motors come in frames ranging from 355 to 630 and offer pole configurations of 4, 6, 8, and 10. They feature a cooling system classified as IC 71W and have an IP rating of 55/56.

Certifications: The motors are certified by the Marine Classification Society and are type approved by ABS, RRR, and DNV. They come with a Marine Survey Certificate.

Construction Details: The housing is made from rugged welded steel with side ribs for added strength. The shield is constructed from grey cast-iron or hot-rolled structural steel depending on the frame size. The shaft is made from carbon steel or hot-rolled structural steel, featuring a cylindrical design with a key.

Cooling and Protection: The motors are totally enclosed water-cooled (TEWC) with a heat exchanger integrated into the housing. The cooling system uses clean water as the coolant, with a working pressure of less than 6 bar and a test pressure of 9 bar.

Rotor and Stator: The rotor is a squirrel cage type, with construction varying based on size. The stator and rotor are VPI treated with polyester amide resin for insulation, and the stator winding is made from copper.

Bearing Information: Bearings are either grease-lubricated antifriction or oil-lubricated sleeve types, with a theoretical lifetime exceeding 50,000 hours. Special bearings can be designed for high radial and axial forces.

Optional Features: Options include dual/multiple winding configurations, increased protection up to IP 56, special bearings, reinforced winding for VFD operation, and more.

Catalog excerpts

Impregnation system Insulation system Protective treatments Optional features General data Antifriction bearings grease lubricated (ball or roller type) or oil lubricated sleeve bearing. The theoretical lifetime of bearings, L10h according to ISO 281/1 standard, of standard horizontal construction generators, without external forces (radial and / or axial) is in excess of 50.000 hours. On request, the lifetime of bearings, L10h can be in excess of 100.000 hours. Locating bearings are on the D end side and floating bearings on the ND end side. Both bearings are fitted with a regreasing system....

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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