Anti-Vibration Rubber Mount Products
(866) 496-5654 US and Canada
(678) 417-6226 International Orders
(866) 465-2793 Fax Number
Shipping Address:
AV Products, Inc.
2352 Pendley Road
Cumming, GA 30041
Billing Address:
AV Products, Inc.
3651 Peachtree Pkwy, Suite E-112
Suwanee, GA 30024
vibration isolators
rubber mounts

Marine and Industrial Engine Mounts

Marine engine mounts are used to isolate vibrations, shocks, limit noise and protect mobile, industrial, marine and stationary equipment. Our marine engine mounts are made to last and will prolong the life of the equipment they are installed on. These mounts also prevent drive systems from going out of alignment. When cheaper alternatives are used, the engine will progressively sit lower until it is moved completely out of alignment which means it will have to work harder, making more vibrations and increasing the wear of the entire drive of the vessel, eventually wearing out the engine.

Stainless steel (304) metal is available for corrosive environments. Height adjusters are available for all marine engine mounts.

Click on the mount picture to see detailed specifications, drawings and graphs. Scroll down to read more about and compare each mount and its applications.

MM Mounts

marine engine mounts

DS Mounts (Soft)

industrial engine mounts

DH Mounts (Hard)

marine engine mount

DM Mounts

industrial engine mount

MM Mount Calculator

marine mount calculator

HD Mounts

rubber engine mounts

DF Mounts

rubber engine mount

Cummins C and CAT 3126 Mounts

marine engine vibration isolators

Solidworks files can be accessed here.

MM Mounts

MM mounts are fail safe marine engine mounts that can be used in a wide variety of applications from generator sets to marine engines to provide effective noise and vibration isolation. MM mounts have a compact low profile design, making them very easy to install. The rubber is loaded in shear and compression and MM mounts provide 3 way axis control with high vertical elasticity, increased longitudinal stiffness and optimal lateral stiffness for improved vibration isolation on that axis.

These mounts can withstand the powerful propeller thrust of marine applications. The rugged design of MM mounts limits excessive movements under shock loads, it also has a protective finish which resists corrosion and the top metal cover protects the mount against oil and other liquids. Size range available is from 77 to 6613 lbs. per MM mount. Interchangeable to Novibra® SIM type mounts and Metalastik® Cushyfloat® type mounts. We also stock DF-9106 mounts which are direct replacements for Cummins C and CAT 3126 mounts. Stainless steel metal further resists destructive fuels, oils, water and petroleum based products in all applications, lengthening the life of the mount.

Applications: Pumps, Compressors, Diesel and Gas Generator Sets, Mobile Electrical Panels and Marine, Industrial and Vehicle Engines.

DS Mounts

DS and DH mounts look similar, however they are used for different purposes. DS mounts can be identified by their high profile design and DH mounts can be identified by their low profile design. Use DS mounts when maximum vibration isolation is a priority and use DH mounts when stability is a priority.

DS mounts are fail safe marine engine mounts that have a high profile rubber section which produces larger deflections and low natural frequencies. These marine engine mounts work the rubber in shear and compression. DS mounts are used in applications where maximum vibration isolation is a priority such as in rotating or mobile machines that are continuously subjected to shocks. These mounts perform well in environmental conditions where dripping oil, diesel and harsh elements are present. Size range available is from 66 to 9259 lbs. per DS mount. Interchangeable to Novibra® RA, RAEM and RAB type mounts. Also interchangeable to Metalastik® Cushyfloat® type mounts. Stainless steel metal further resists destructive fuels, oils, water and petroleum based products in all applications, lengthening the life of the mount.

Applications: Diesel and Gas Generator Sets, Marine Auxiliary Engines, Centrifuges, Mobile Machines, Industrial and Diesel Boat Engines and Motors.

DH Mounts

DS and DH mounts look similar, however they are used for different purposes. DS mounts can be identified by their high profile design and DH mounts can be identified by their low profile design. Use DS mounts when maximum vibration isolation is a priority and use DH mounts when stability is a priority.

DH mounts are fail safe marine engine mounts that have a low profile which provides an optimal ratio of stiffness and horizontal stability. These marine engine mounts work the rubber in shear and compression. DH mounts are used in applications that require greater control of movement due to axial and radial shock forces, these mounts will provide a reasonable amount of vibration and noise isolation. These mounts perform well in environmental conditions where dripping oil, diesel and harsh elements are present. Size range available is from 154 to 11023 lbs. per DH mount. Interchangeable to Novibra® RA, RAEM and RAB type mounts. Also interchangeable to Metalastik® Cushyfloat® type mounts. Stainless steel metal further resists destructive fuels, oils, water and petroleum based products in all applications, lengthening the life of the mount.

Applications: Marine-Land Auxiliary Units, Industrial Vehicles, Centrifuges, Ventilators, Compressors and Pumps.

DM Mounts

DM mounts are fail safe marine engine mounts that are similar in design to the DS and DH mounts but are made with a special high-damping rubber compound which gives these mounts a high degree of vibration isolation and a great amount of stability. DM mounts are extremely effective on 1, 2 and 3 cylinder diesel engines where the special high-damping compound provides effective vibration isolation capabilities while also eliminating much of the movement created by 1-3 cylinder engines.

Diesel engines with an uneven number of small diameter cylinders create high-amplitude vibrations which require a mount with extra damping capabilities to limit the high amplitudes. These vibration mounts are typically used when other mounts cannot offer sufficient stability to the affected equipment, they are great for machines that are subject to constant start/stop conditions and that require a high degree of vibration damping and in conditions which are close to the frequency of resonance of the system. Size range available is from 154 to 286 lbs. per DM mount. Stainless steel metal further resists destructive fuels, oils, water and petroleum based products in all applications, lengthening the life of the mount.

Applications: Diesel Engines, Emergency Power Packs, Motor Pumps, Industrial Generator Sets, Compressors and Ventilators.

Our most popular marine engine mounts have an integrated fail-safe protection device built to prolong the life of both the mount and your equipment much longer than typical vibration mounts. They are built with strong, resistant metal which protects the rubber in the mount from damaging fuels, oils, water, petroleum and harsh environmental conditions.

The Importance of Marine Engine Mounts

Having a quality marine engine mount installed is the difference between a quiet, low vibration, firmly mounted engine and a loud, out of alignment, damaged engine. Damaged or worn engine mounts should be replaced as soon as possible because an engine that sits low can begin to cause misalignment of transmission to shaft, a worn cutlass bearing or damaged components such as the shaft, transmission or propeller.

The force of the high revving engine is passed directly onto the marine engine mount and even the smallest of one cylinder diesel engines can produce a large amount of force and vibration. There are many forces that are applied on the engine, there is the force of the motor and transmission weight as well as the shearing force of the propeller under thrust. For these reasons, engine mounts are compressed on one side while being stretched on the other. In severe conditions such a dangerous storm or a heavy duty pounding, the rubber bonded to metal that is essentially an engine mount takes considerable abuse over time.

It is important that the engine mount not be too soft or too hard as choosing an incorrect mount can make your problem worse. We have a marine propulsion engine mount calculator located above that is helpful in sizing your mount but please contact us if you can’t locate the right size for your application.