Inch Size,
Vibration Isolation Mounts
Cylindrical Type
, with Steel Components
GN 351.1 / GN 351.2 / GN 351.3

RoHS Compliant

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Specification
Information

Mount body: Natural rubber (NR), vulcanized, 55 durometer (shore hardness +/-5°)
Cover plate: Steel, zinc plated, yellow passivated, molded in
Tapped inserts/threaded studs: Steel, zinc plated, blue passivated, molded in

GN 351.1 - with 2 threaded studs
GN 351.2 - with 1 tapped hole and 1 threaded stud
GN 351.3-
with 2 tapped holes

Shipping

GN 351.1 / GN 351.2 / GN 351.3 vibration isolation mounts, also known as vibration mounts, anti-vibration mounts, vibration bobbins or rubber bumpers, are suitable for the elastic mounting of machine units such as motors, compressors and pumps.
These rubber mounts are simple and economical construction elements. Their resilience and their broad range of different sizes and dimensions allow these mounts to be used in many applications that require vibration isolation
Versions with 40 or 70 durometer natural rubber material available upon request in certain minimum quantities.
Specials, with certain minimum quantities, also available.
For metric versions see GN 351.

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For CAD download instructions, click
HERE

GN 351.1 - With 2 Threaded Studs

Dimensions in:

inches
(millimeters)

Part Number d1 h
d2
Thread
l
Stud Length
s Spring Rate ~lbf./in. Shear Load Spring Rate ~lbf./in. Max. Load
[lbf]
Max. Deflection
~in.
Shear Load Max. Deflection
~in.
351.1-9-13-8-55
Download the CAD
.38
(10)
.50
(13)
8-32 .50
(13)
.04
(1)
205 .027 20 .10 .177
351.1-14-13-10-55
Download the CAD
.56
(14)
.50
(13)
10-32 .38
(10)
.04
(1)
91 .080 13 .15 .276
351.1-16-13-8-55
Download the CAD
.63
(16)
.50
(13)
8-32

.50
(13)

.05
(1.2)

440 .097 44 .10 .315
351.1-19-19-1/4-55
Download the CAD
.75
(19)
.75
(19)
1/4-20

.50
(13)

.08
(2)

296 .106 58 .20 .374
351.1-25-13-1/4-55
Download the CAD
1.00
(25)
.50
(13)
1/4-20 .50
(13)
.08
(2)
1043 .398 154 .15 .492
351.1-25-19-1/4-55
Download the CAD
1.00
(25)
.75
(19)
1/4-20 .63
(16)
.08
(2)
684 .195 183 .15 .492
351.1-25-19-5/16-55
Download the CAD
1.00
(25)
.75
(19)
5/16-18 .63
(16)
.08
(2)
1220 .195 183 .15 .492
351.1-25-25-1/4-55
Download the CAD
1.00
(25)
1.00
(25)
1/4-20 .50
(13)
.08
(2)
670 .106 168 .25 .492
351.1-25-25-5/16-55
Download the CAD
1.00
(25)
1.00
(25)
5/16-18 .63
(16)
.08
(2)
616 .106 151 .25 .492
351.1-32-19-1/4-55
Download the CAD
1.25
(32)
.75
(19)
1/4-20 .50
(13)
.08
(2)
1886 .398 283 .15 .630
351.1-32-19-5/16-55
Download the CAD
1.25
(32)
.75
(19)
5/16-18 .63
(16)
.08
(2)
1425 .398 280 .20 .630
351.1-32-25-5/16-55
Download the CAD
1.25
(32)
1.00
(25)
5/16-18 .63
(16)
.08
(2)
1090 .239 273 .25 .630
351.1-35-25-5/16-55
Download the CAD
1.38
(35)
1.00
(25)
5/16-18 .63
(16)
.08
(2)
1344 .389 336 .25 .669
351.1-38-19-5/16-55
Download the CAD
1.50
(38)
.75
(19)
5/16-18 .63
(16)
.08
(2)
2615 .664 523 .20 .748
351.1-38-25-3/8-55
Download the CAD
1.50
(38)
1.00
(25)
3/8-16 .63
(16)
.08
(2)
1200 .460 300 .25 .748
351.1-40-25-3/8-55
Download the CAD
1.56
(40)
1.00
(25)
3/8-16 .63
(16)
.08
(2)
2000 .469 500 .25 .787
351.1-40-25-5/16-55
Download the CAD
1.56
(40)
1.00
(25)
5/16-18 .63
(16)
.08
(2)
1710 .469 336 .20 .787
351.1-51-19-3/8-55
Download the CAD
2.00
(51)
.75
(19)
3/8-16 1.13
(29)
.08
(2)
4093 1.151 804 .20 .984
351.1-51-41-3/8-55
Download the CAD
2.00
(51)
1.63
(41)
3/8-16 .63
(16)
.08
(2)
1955 .487 576 .30 .984
351.1-62-32-1/2-55
Download the CAD
2.44
(62)
1.25
(32)
1/2-13 .88
(22)
.08
(2)
2582 .974 762 .30 1.181
351.1-79-57-1/2-55
Download the CAD
3.13
(79)
2.25
(57)
1/2-13 1.25
(32)
3
(.12)
13281 .841 2607 .20 1.378
 
GN 351.2 - With 1 Tapped Hole and 1 Threaded Stud

Dimensions in:

inches
(millimeters)

Part Number d1 h
d2
Thread
l
Stud Length
s t Spring Rate ~lbf./in. Shear Load Spring Rate ~lbf./in. Max. Load
[lbf]
Max. Deflection
~in.
Shear Load Max. Deflection
~in.
351.2-16-13-8-55
Download the CAD
.63
(16)
.50
(13)
8-32 .50
(13)
.05
(1.2)
.16
(4)
490 .097 73 .10 .315
351.2-25-13-1/4-55
Download the CAD
1.00
(25)
.50
(13)
1/4-20

.50
(13)

.08
(2)

.24
(6)
11660 .398 1166 .10 .492
351.2-25-19-1/4-55
Download the CAD
1.00
(25)
.75
(19)
1/4-20 .50
(13)
.08
(2)
.24
(6)
1445 .195 217 .15 .492
351.2-25-25-1/4-55
Download the CAD
1.00
(25)
1.00
(25)
1/4-20 .50
(13)
.08
(2)
.24
(6)
800 .106 200 .25 .492
351.2-25-25-5/16-55
Download the CAD
1.00
(25)
1.00
(25)
5/16-18 .63
(16)
.08
(2)
.31
(8)
800 .106 200 .25 .492
351.2-35-25-5/16-55
Download the CAD
1.38
(35)
1.00
(25)
5/16-18 .63
(16)
.08
(2)
.31
(8)
2000 .389 500 .25 .669
351.2-51-41-3/8-55
Download the CAD
2.00
(51)
1.63
(41)
3/8-16 .63
(16)
.08
(2)
.39
(10)
187 .487 748 .40 1.000
351.2-51-51-3/8-55
Download the CAD
2.00
(51)
2.00
(51)
3/8-16 1.13
(29)
.08
(2)
.39
(10)
1364 .398 682 .50 1.000
351.2-79-57-1/2-55
Download the CAD
3.13
(79)
2.25
(57)
1/2-13 1.25
(32)
3
(.12)
.47
(12)
3357 .841 1880 .56 1.378
 
GN 351.3 - With 2 Tapped Holes

Dimensions in:

inches
(millimeters)

Part Number d1 h
d2
Thread
s t Spring Rate ~lbf./in. Shear Load Spring Rate ~lbf./in. Max. Load
[lbf]
Max. Deflection
~in.
Shear Load Max. Deflection
~in.
351.3-16-13-8-55
Download the CAD
.63
(16)
.50
(13)
8-32 .05
(1.2)
.16
(4)
1100 .097 110 .10 .315
351.3-25-25-5/16-55
Download the CAD
1.00
(25)
1.00
(25)
5/16-18

.08
(2)

.31
(8)
1713 .106 257 .15 .492
351.3-38-25-5/16-55
Download the CAD
1.50
(38)
1.00
(25)
5/16-18 .08
(2)
.31
(8)
3400 .460 510 .15 .748
351.3-51-41-3/8-55
Download the CAD
2.00
(51)
1.63
(41)
3/8-16 .08
(2)
.39
(10)
1866 .487 560 .30 1.000