+91 9075279782 info@gmpbearings.com

 

GMP is one of the world’s most trusted names in the marine industry worldwide for over 35 years. Our bearings are used in rudder, shaft and stern gear applications for all types of marine vessels from naval ships, cargo/container ships, tankers, ocean liners, luxury yachts, to harbour tug boats, trawlers and costal fishing boats.

With continuing research and advancements in product technology, GMP Marine Cutlass bearings now exceed US Navy specifications in critical parameters like Tensile strength, elongation and bond strength.

GMP Marine Cutlass Rubber bearings are made to the highest quality standards, in materials, workmanship and dimensional accuracy (Clearance and tolerance is as per U.S. Navy Standard, BuShips plan number 810-1385664). Our bearings have proved its mettle by operating in the toughest conditions ranging from the arctic to the tropics, in shallow waters as well as high seas.

Our bearings cover a wide range of shaft diameters from 25mm to 400mm. (Bespoke sizes can also be made on request).

Concentricity and Cylindricity

Most manufacturers use centreless grinding techniques to finish the outside diameter but centreless grinding process does not take the inside diameter of the bearing into account, the centres of the outside diameter and inside diameter may not be the same.

GMP bearings are mounted on a mandrel and ground on a cylindrical grinder, thus achieving better concentricity as well as cylindricity to the full length of the bearing so that it is perfectly circular, perfectly straight and has no taper, as compared to bearings turned on a lathe machine.

 

GMP Marine Cutlass rubber bearings are engineered with a proprietary formulation of Nitile rubber perfected over decades of research and development. The rubber is extremely tough and resistant to swelling, as well as exposure to chemicals and oil. This Nitrile rubber compound is molded and bonded with the metal or non-metallic shell. The bond strength between the shell and Nitrile rubber lining is an industry leading 235 PSI (16.5 Kg/sq. cm)

The inner groove design of GMP bearings combined with proprietary Nitrile rubber lining create a hydrodynamic lubricating film to separate the bearing surface and the shaft even at low shaft speeds. The unique shape of our bearing grooves are designed for maximum lubricating water flow and dissipation of heat.

Abrasive grit is flushed out through these grooves, protecting the shaft as well as the bearings from damage.

This helps to reduce wear on the bearing surfaces in environments with high sand and other abrasive particles, as found in shallow water.

The bearing is designed to let these abrasive particles pass over its surface and into the grooves where it is flushed out by the water feed pressure. This system prevents the particles from getting embedded into the bearing surface and causing severe wear on the propeller shaft.

Rubber Properties

Density (Specific gravity)

1.25 ± 0.1

Hardness Shore A

65/75 shores A

Tensile strength

(Min) 120 kgf/cm2;

Elongation

(Min) 200%

Permanent Compression set

(Max) 20%

Co- efficient of thermal expansion

(Max) 7x104;

Bond strength (rubber lining to shell)

235 PSI (16.5 Kg/sq. cm)

Our Clients

Indian Navy

India

Urantia Suministros

UNITED STATES OF AMERICA

BHEL

India

BT MARINE

UNITED KINGDOM

NTPC

INDIA

Hellenic

GREECE

TATA POWER

INDIA

EXPERT UNITED

UNITED ARAB EMIRATES

Reliance Power

INDIA

FLOWSERVE

PERU

ADANI

INDIA

Faraway Yachting

THAILAND

SPX

INDIA

BIWATER

UNITED KINGDOM

CLYDEUNION PUMPS

INDIA

BLAZER MARINE

UNITED ARAB EMIRATES

FLOWSERVE

INDIA

STERLING PUMPS

AUSTRALIA

A.H WADIA

INDIA

TAMKEEN

SAUDI ARABIA

SHREE GAJANAN

INDIA

TEIGNBRIDGE

UNITED ARAB EMIRATES

JAIPRKASH POWER VENTURES LIMITED

INDIA

PETROFAC

MALAYASIA

JSW ENERGY

INDIA

BT MARINE

NETHERLANDS

APGENCO

INDIA

MAZONE

UNITED ARAB EMIRATES

WEIR

INDIA

MEERU ISLAND

MALDIVES

VOLTAS LIMITED

INDIA

OSCULATI

ITALY

LANCO

INDIA

CAVES ENGINEERING & MARINE
ESSEL GROUP

INDIA

AMERICAN PUMPS

UNITED STATES OF AMERICA

CB

INDIA