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 K50 Series Torsional Control Vibro-Isolators®

 

The K50 Series is designed to be used in applications where one mount is required, or in conjunction with other mounts that are in this series.  The rebound mount is used to limit movement from low frequency vibration and shock. 

These mounts are also refered to as torsional mounts, ring mounts and donut mounts, machinery mounts and rebounds.

Some popular combinations include: 

  • K50 & K51; K50 & K50, K50 & K53; K50 & K531
  • K52 & K53; K52 & K52; K53 & K53
  • K521 & K53; K521 & K521; K521 & K522
  • K522 & K53; K522 & K522; K522 & K531 

 

Features and Benefits:

  • Low cost
  • Easy to install and minimal maintenance
  • Available in Natural Rubber, Neoprene, and Nitrile (Buna-N)
  • Compression load raning from 60 to 1800 pounds (27 to 816 kilograms)
  • Available in 30, 40, 50, 60, and 70 Durometer Shore A
  • 2-D PDF prints are available for each mount
  • 2-D DWG, 3-D IGES, and 3-D SolidWorks are available upon request
  • Made in the USA

 

Applications:

  • Motors, blowers, fans, radiators, cabs, gensets, engine mounts,
  • Military, transporation, HVAC, rail, construction, off highway

 

Environmental Data:

  • All static load test data for the Torsional Vibro-Insulator® Mounts is based on Neoprene.
  • Operating temperatures should not exceed 180° F.
  • Other elastomers such as Natural Rubber and Nitrile (Buna-N) are available upon request.

 

Natural Rubber (NR)

Advantages:  Outstanding resilience; high tensile strength; superior resistance to tear and abasion; excellent rebound elasticity (snap); good flexibility at low temperatures (-40° to 155° F).

Limitations:  Poor resistance to heat, ozone, and sunlight; very little resistance to oil gasoline, and hydrocarbon solvents.

  • Operating temperatures should not exceed 155° F.
  • Natural Rubber is not recommended from exposure to oil, gasoline, ozone sunlight.

 

Neoprene (CR)

All static load test data for the Torsional Vibro-Insulator® Mounts is based on Neoprene.

Advantages:  Good inherent flame resistance; moderate resistance to oil and gasoline; very good resistance to weather, ozone, and natural aging; good resistance to flex cracking; very good resistance to alkalis and acids.

Limitations:  Poor to fair resistance aromatic and oxygenated solvents; limited flexibility at low temperatures (10° F to 180° F).

Nitrile (Buna-N)

Advantages:  Very good resistance to oil and gasoline; superior resistance to petroleum-based hydraulic fluids; wide range of service temperatures (-65° F to 300° F); good resistance to hydrocarbon solvents; very good resistance to alkalis and acids.

Limitations:  Inferior resistance to ozone, sunlight, and natural aging; poor resistance to oxygenated solvents.

Source: American Chemical Society

 

Delivery is 6 weeks.

 

 

 

 

 

 

 

 

 

 

 

K50 Style With and Without Offset (Locator) 1
K50 Style With and Without Offset (Locator) 2
K50 Style With and Without Offset (Locator) 3
Product Code
Bottom Outside Diameter - in (A)
Top Outside Diameter - in (B)
Mounting Hole Diameter - in (C)
Inside Diameter - in (D)
Height - in (E)
Step - in (F)
Compression Spring Rate - lb/in
Compression Maximum Recommended Deflection - in
Compression Load at Maximum Deflection - lb
Durometer
Elastomer
Dimensional CAD Drawing (pdf)
Product Code
2.75
2
1.19
.625
1.20
.12
1200
.21
250
40
Natural Rubber
2.75
2
1.19
.625
1.20
.12
1200
.21
250
40
Neoprene
2.75
2
1.19
.625
1.20
.12
1200
.21
250
40
Nitrile
2.75
2
1.19
.625
1.20
.12
1700
.21
350
50
Natural Rubber
2.75
2
1.19
.625
1.20
.12
1700
.21
350
50
Neoprene
2.75
2
1.19
.625
1.20
.12
1700
.21
350
50
Nitrile
2.75
2
1.19
.625
1.20
.12
2200
.21
450
60
Natural Rubber
2.75
2
1.19
.625
1.20
.12
2200
.21
450
60
Neoprene
2.75
2
1.19
.625
1.20
.12
2200
.21
450
60
Nitrile
2.75
2
1.19
.625
1.20
.12
3000
.21
600
70
Natural Rubber
2.75
2
1.19
.625
1.20
.12
3000
.21
600
70
Neoprene
2.75
2
1.19
.625
1.20
.12
3000
.21
600
70
Nitrile
2.75
2
N/A
.625
1.22
N/A
1200
.21
250
40
Natural Rubber
2.75
2
N/A
.625
1.22
N/A
1200
.21
250
40
Neoprene
2.75
2
N/A
.625
1.22
N/A
1200
.21
250
40
Nitrile
2.75
2
N/A
.625
1.22
N/A
1700
.21
350
50
Natural Rubber
2.75
2
N/A
.625
1.22
N/A
1700
.21
350
50
Neoprene
2.75
2
N/A
.625
1.22
N/A
1700
.21
350
50
Nitrile
2.75
2
N/A
.625
1.22
N/A
2200
.21
450
60
Natural Rubber
2.75
2
N/A
.625
1.22
N/A
2200
.21
450
60
Neoprene
2.75
2
N/A
.625
1.22
N/A
2200
.21
450
60
Nitrile
2.75
2
N/A
.625
1.22
N/A
3000
.21
600
70
Natural Rubber
2.75
2
N/A
.625
1.22
N/A
3000
.21
600
70
Neoprene
2.75
2
N/A
.625
1.22
N/A
3000
.21
600
70
Nitrile
4.06
3.12
1.27
.625
1.46
.31
3300
.20
660
40
Natural Rubber
4.06
3.12
1.27
.625
1.46
.31
3300
.20
660
40
Neoprene
4.06
3.12
1.27
.625
1.46
.31
3300
.20
660
40
Nitrile
4.06
3.12
1.27
.625
1.46
.31
5500
.20
1100
50
Natural Rubber
4.06
3.12
1.27
.625
1.46
.31
5500
.20
1100
50
Neoprene
4.06
3.12
1.27
.625
1.46
.31
5500
.20
1100
50
Nitrile
4.06
3.12
1.27
.625
1.46
.31
7000
.20
1400
60
Natural Rubber
4.06
3.12
1.27
.625
1.46
.31
7000
.20
1400
60
Neoprene
4.06
3.12
1.27
.625
1.46
.31
7000
.20
1400
60
Nitrile
4.06
3.12
1.27
.625
1.46
.31
9000
.20
1800
70
Natural Rubber
4.06
3.12
1.27
.625
1.46
.31
9000
.20
1800
70
Neoprene
4.06
3.12
1.27
.625
1.46
.31
9000
.20
1800
70
Nitrile
3.25
2.40
1.25
.625
1.40
.30
1400
.21
280
40
Natural Rubber
3.25
2.40
1.25
.78
1.40
.30
1400
.21
280
40
Natural Rubber
3.25
2.40
1.25
.625
1.40
.30
1400
.21
280
40
Neoprene
3.25
2.40
1.25
.78
1.40
.30
1400
.21
280
40
Neoprene
3.25
2.40
1.25
.625
1.40
.30
1400
.21
280
40
Nitrile
3.25
2.40
1.25
.78
1.40
.30
1400
.21
280
40
Nitrile
3.25
2.40
1.25
.625
1.40
.30
2800
.21
580
50
Natural Rubber
3.25
2.40
1.25
.78
1.40
.30
2800
.21
580
50
Natural Rubber
3.25
2.40
1.25
.625
1.40
.30
2800
.21
580
50
Neoprene
3.25
2.40
1.25
.78
1.40
.30
2800
.21
580
50
Neoprene
3.25
2.40
1.25
.625
1.40
.30
2800
.21
580
50
Nitrile
3.25
2.40
1.25
.78
1.40
.30
2800
.21
580
50
Nitrile
3.25
2.40
1.25
.625
1.40
.30
4200
.21
880
60
Natural Rubber
3.25
2.40
1.25
.78
1.40
.30
4200
.21
880
60
Natural Rubber
3.25
2.40
1.25
.625
1.40
.30
4200
.21
880
60
Neoprene
3.25
2.40
1.25
.78
1.40
.30
4200
.21
880
60
Neoprene
3.25
2.40
1.25
.625
1.40
.30
4200
.21
880
60
Nitrile
3.25
2.40
1.25
.78
1.40
.30
4200
.21
880
60
Nitrile
3.25
2.40
1.25
.625
1.40
.30
5600
.21
1180
70
Natural Rubber
3.25
2.40
1.25
.78
1.40
.30
5600
.21
1180
70
Natural Rubber
3.25
2.40
1.25
.625
1.40
.30
5600
.21
1180
70
Neoprene
3.25
2.40
1.25
.78
1.40
.30
5600
.21
1180
70
Neoprene
3.25
2.40
1.25
.625
1.40
.30
5600
.21
1180
70
Nitrile
3.25
2.40
1.25
.78
1.40
.30
5600
.21
1180
70
Nitrile
3.25
2.40
N/A
.625
1.40
N/A
1400
.21
280
40
Natural Rubber
3.25
2.40
N/A
.625
1.40
N/A
1400
.21
280
40
Neoprene
3.25
2.40
N/A
.625
1.40
N/A
1400
.21
280
40
Nitrile
3.25
2.40
N/A
.625
1.40
N/A
2800
.21
580
50
Natural Rubber
3.25
2.40
N/A
.625
1.40
N/A
2800
.21
580
50
Neoprene
3.25
2.40
N/A
.625
1.40
N/A
2800
.21
580
50
Nitrile
3.25
2.40
N/A
.625
1.40
N/A
4200
.21
880
60
Natural Rubber
3.25
2.40
N/A
.625
1.40
N/A
4200
.21
880
60
Neoprene
3.25
2.40
N/A
.625
1.40
N/A
4200
.21
880
60
Nitrile
3.25
2.40
N/A
.625
1.40
N/A
5600
.21
1180
70
Natural Rubber
3.25
2.40
N/A
.625
1.40
N/A
5600
.21
1180
70
Neoprene
3.25
2.40
N/A
.625
1.40
N/A
5600
.21
1180
70
Nitrile
2.94
1.94
1.22
.52
1.37
.30
1200
.20
240
40
Natural Rubber
2.94
1.94
1.22
.52
1.37
.30
1200
.20
240
40
Neoprene
2.94
1.94
1.22
.52
1.37
.30
1200
.20
240
40
Nitrile
2.94
1.94
1.22
.52
1.37
.30
1900
.20
380
50
Natural Rubber
2.94
1.94
1.22
.52
1.37
.30
1900
.20
380
50
Neoprene
2.94
1.94
1.22
.52
1.37
.30
1900
.20
380
50
Nitrile
2.94
1.94
1.22
.52
1.37
.30
2400
.20
480
60
Natural Rubber
2.94
1.94
1.22
.52
1.37
.30
2400
.20
480
60
Neoprene
2.94
1.94
1.22
.52
1.37
.30
2400
.20
480
60
Nitrile
2.94
1.94
1.22
.52
1.37
.30
3700
.20
740
70
Natural Rubber
2.94
1.94
1.22
.52
1.37
.30
3700
.20
740
70
Neoprene
2.94
1.94
1.22
.52
1.37
.30
3700
.20
740
70
Nitrile
3.25
2.40
1.25
.78
1.40
.30
1400
.21
660
40
Neoprene
2.75
2
1.62
.625
.75
.19
3800
.08
300
40
Natural Rubber
2.75
2
1.62
.625
.75
.19
3800
.08
300
40
Neoprene
2.75
2
1.62
.625
.75
.19
3800
.08
300
40
Nitrile
2.75
2
1.62
.625
.75
.19
5700
.08
450
50
Natural Rubber
2.75
2
1.62
.625
.75
.19
5700
.08
450
50
Neoprene
2.75
2
1.62
.625
.75
.19
5700
.08
450
50
Nitrile
2.75
2
1.62
.625
.75
.19
7300
.08
580
60
Natural Rubber
2.75
2
1.62
.625
.75
.19
7300
.08
580
60
Neoprene
2.75
2
1.62
.625
.75
.19
7300
.08
580
60
Nitrile
2.75
2
1.62
.625
.75
.19
9300
.08
740
70
Natural Rubber
2.75
2
1.62
.625
.75
.19
9300
.08
740
70
Neoprene
2.75
2
1.62
.625
.75
.19
9300
.08
740
70
Nitrile
Bottom Outside Diameter - in (A) Top Outside Diameter - in (B) Mounting Hole Diameter - in (C) Inside Diameter - in (D) Height - in (E) Step - in (F) Compression Spring Rate - lb/in Compression Maximum Recommended Deflection - in Compression Load at Maximum Deflection - lb Durometer Elastomer Dimensional CAD Drawing (pdf)

Use the sort keys located at the bottom of the table to find the exact Vibro-Insulator© you require. Please contact us for selection help.