Mount Selection Guide

Elastomer Selection Guide

Sizing Instructions

STEP 1: Fill out the Application Worksheet.

STEP 2: Looking at the Mounting Diagrams along each side of the Selection Guide, select the diagram that best fits the application. If the System Natural Frequency from the Application Worksheet is higher than the values shown in the Selection Guide and the Temperature Range is acceptable, select the smallest model series that will carry the Load required for the application. Refer to the Data Sheet in the pocket on Page 4 for more information on the selected series. If the mount that you have selected does not meet the above criteria, select another mount and repeat the selection process. If you have special requirements, send Corry Rubber Corporation your completed Application Worksheet and an Applications Engineer will contact you with a solution.

STEP 3: On the Data Sheet, consult the Load vs. System Natural Frequency Graph for the required Mounting Oreientation. Locate the intersection point of the System Natural Frequency (fn) and the Supported Load per Mount (W) calculated for the application. The Model Number represented by the line at, or dierectly below, this intersection point is the best choice for the application.

STEP 4: Where required, select the desired Hardware Options from the data sheets. If no hardware options are available, place “00” in the Hardware Options portion of the part number. Specify metric or imperial model. *(See Ordering information on Page 4). *NOTE: Stud, Machinery, and Leveling Mounts must include metric or imperial designation. Plateform, Multiplane, Low Profile, Ring and Bushing and Centerbond Mounts do not require metric or imperial designation

Sample Problems

A 200 lb (890 N) pump turning at 1725 RPM is causing vibrations which are affecting the readings of nearby sensitive equipment. In order to control these vibrations, isolation mounts will be placed under the base. A 1/2” diameter bolt hole exists in the center of each of the 4 legs of the base. The isolators will be bolted to the floor. The ambient temperature around the motor is 65°F to 185°F (18°C to 85°C).

STEP 1: From the Application Woksheet, we know:

  • Working Temperature Range = 65°F to 185°F (18°C to 85°C).
  • System Natural Frequency for 80% isolation (fn) = 9.6 Hz
  • Supported Load per Mount (W) = 50 lbs (220 N)

STEP 2: From the Selection Guide, we conclude:
A Machinery Mount can be used in this application.

  • The geometry will work.
  • The Lowest System Natural Frequency for Machinery Mounts is lower than the Calculated Natural Frequency for this application.
  • The EMM20N Series has a mount which will carry the Required Supported Load.

STEP 3: From the EMM20N Machinery Mount Series Data Sheet, we determine:

  • The model number EMM20N – 0060 mount is the best selection.

STEP 4: From the Hardware Options & Ordering Information sections, we conclude:

  • There is no optional hardware required for the Machinery Mounts.
  • An Imperial mount specification is needed.
  • Four EMM20N – 0060 – 00 – I elastomeric isolation mounts should be ordered.
Mounting Orientation: AXIAL
DIRECTION		 Mounting Orientation: RADIAL
DIRECTION
Mounting
Diagram		 Lowest
System
Natural
Frequency		 Supported Load Range Model
Size		 Lowest
System
Natural
Frequency		 Supported Load Range Mounting
Diagram
N lbs N lbs
PLATEFORM MOUNTS
EPF SERIES Elastomer: Natural Rubber Working
Temperature Range: -40 C to 80 C (-40 F to 180 F)
PLATEFORM MOUNT 12 3 to
55		 0.7 to
12		 EPF10R …… …… …… Not
Recommended
6 to
130		 1.5 to
30		 EPF15R …… ……
15 to
200		 3.5 to
45		 EPF20R …… ……
MULTIPLANE MOUNTS
EMP SERIES Elastomer: Natural Rubber Working
Temperature Range: -40 C to 80 C (-40 F to 180 F)
PLATEFORM MOUNT 8 3 to
60		 0.7 to EMP15R 8 …… …… Not
Recommended
LOW PROFILE MOUNTS
ELP SERIES Elastomer: Neoprene Working
Temperature Range: -20 C to 90 C (0 F to 200 F)
PLATEFORM MOUNT 8 50 to
400		 12 to
90		 ELP30N 8 …… ……
70 to
1300		 20 to
300		 ELP35N 70 to
1300		 20 to
300
175 to
2500		 40 to
570		 ELP38N 175 to
2500		 40 to
570
250 to
4500		 60 to
1000		 ELP43N 2500 to
4500		 60 to
1000
360 to
6700		 80 to
1500		 ELP50N 350 to
6700		 80 to
1500
MACHINERY MOUNTS
EMM SERIES Elastomer: Natural Rubber Working
Temperature Range: -40 C to 80 C (-40 F to 180 F)
PLATEFORM MOUNT 8 30 to 700 7 to
175		 EMM20N …… …… …… Not
Recommended
150 to 3000 35 to 700 EMM40N …… ……
LEVELING MOUNTS
ELM SERIES Elastomer: Natural Rubber Working
Temperature Range: -40 C to 80 C (-40 F to 180 F)
PLATEFORM MOUNT 8 65 to 3000 15 to 700 ELM …… …… …… Not
Recommended
STUD MOUNTS
EST SERIES Elastomer: Neoprene Working
Temperature Range: -20 C to 90 C (0 F to 200 F)
STUD MOUNTS 10 50 to
500		 11 to
110		 EST10N 8 7 to 100 1.5 to
22
90 to
1000		 20 to
220		 EST13N 15 to 200 3 to
40
90 to
800		 20 to
185		 EST14N 15 to 200 3 to
45
250 to
1200		 60 to
260		 EST56N 25 to
200		 6 to
40
RING AND BUSHING MOUNTS
ERB SERIES Elastomer: Neoprene Working
Temperature Range: -20 C to 90 C (0 F to 200 F)
RING & BUSHING MOUNTS 15 60 to
1300		 15 to
300		 ERB13N 30 60 to
300		 12 to
70
60 to
1300		 15 to
300		 ERB19N 20 60 to
900		 15 to
200
100 to
2200		 25 to
500		 ERB26N 20 90 to
1300		 30 to
300
100 to
2700		 30 to
600		 ERB35N 15 130 to
2700		 30 to
600
CENTERBOUND MOUNTS
ECB SERIES Elastomer: Natural Rubber Working
Temperature Range: -40 C to 80 C (-40 F to 180 F)
CENTERBOUND MOUNTS 17 70 to
1500		 20 to
175		 ECB11R/18R 20 70 to 500 20 to
90
15 275 to
2700		 50 to
600		 ECB20R/25R 20 300 to
1500		 75 to
325
12 500 to
6700		 110 to
1500		 ECB30R/37R 15 250 to
3200		 60 to
800