CB Vibration Isolators

Pair-mounted anti-vibration mounts providing high radial elasticity, protection against elastomer fatigue and excellent resistance to dynamic loads.

The AMC-MECANOCAUCHO® CB Vibration Isolators are designed to be installed in pairs, on either side of the chassis or structure to be isolated. Installation is simplified by using a single through-bolt, with washers positioned at both ends of the assembly.

The CB Vibration Isolators incorporate metal reinforcement in the radial working area, preventing direct contact between the elastomer and sharp edges around the mounting holes, particularly when these are produced by laser cutting. This design helps to reduce stress concentrations and elastomer fatigue.

It also allows simple mounting holes to be used without requiring machined radii or chamfers, simplifying assembly and helping to reduce manufacturing and installation costs.

Thanks to their high radial elasticity and multidirectional bump-stop behavior, CB Vibration Isolators provide effective vibration isolation and shock absorption while limiting excessive movement. They are particularly suitable for mobile machinery, cabs, off-highway equipment and applications subjected to high dynamic loads.

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 40	0.81	0.2	0.2	1.02	0.07	610053	M8	5/16”	156070	18	45Sh
									156071	40	55Sh
									156072	55	65Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 60	4.45	0.79	0.79	1.57	0.31	606130	M16	5/8”	156011	154	45 Sh
									156013	264	55 Sh
									156014	375	65 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 65	6.69	0.79	0.79	1.61	0.39	706004	M18	11/16"	156031	154	45 Sh
									156032	264	55 Sh
									156033	375	65 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 76	6.69	0.59	0.59	1.93	0.49	608074	M16	5/8”	156053	132	45 Sh
									156054	198	55 Sh
									156055	331	65 Sh
									156056	441	75 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 80	6.69	0.79	0.71	1.5	1	608074	M16	5/8”	156001	198	45 Sh
									156002	309	55 Sh
									156003	441	65 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 110	18.5	0.98	0.98	2.24	1	610192	M22 \| M20	7/8” \| 3/4"	156021	518	45 Sh
									156022	827	55 Sh
									156023	1212	65 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore	3D
CB 125	34.45	1.57	1.57	2.8	2	608529	M24	15/16"	156089	1102	55 Sh
CB 125	34.45	1.57	1.57	2.8	2	608529	M24	15/16"	156090	1763	75 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 130	46.85	1.57	1.57	2.8	3	608278	M30	1 1/8"	156026	716	45 Sh
									156027	1102	55 Sh
									156028	1322	65 Sh
									156029	1763	70 Sh

Type	Tightening torque Max. (Nm)	T Max.(in)	T Min.(in)	Q(in)	Weight(lbs)	Washer	Bolt Size (Metric)	Bolt Size (Imperial)	Code	Max. Load(lbs)	Shore
CB 150	34.65	1.57	1.57	3.54	4	608278	M30	1 1/8"	156065	1543	45 Sh
									156066	2204	55 Sh
									156067	3967	65 Sh
									156068	4408	70 Sh

Technical characteristics

The AMC-MECANOCAUCHO® CB mounts are radially more flexible tan axially. This feature is especially interesting for those machines or equipment where radial axis vibration isolation is important.
The mount is provided with a built in multi-directional snubbering system that limits the maximum allowed displacements.
Different sizes and hardness are available to accommodate applications from 4kg to 800kg per mount.
Metal parts are embedded in rubber in order to prevent corrosion.

Operation and Assembly

The CB mounts must be installed according to the following installation instructions:

They can be installed in frames of different thicknesses according to the values of T, given in the table below. The load vs. Deformation curves will vary depending on the thickness of the frame on which the mount is installed. This thickness "T" determines the degree of precompression of the mount.
For the correct installation of the mount, it is recommended to make a hole in the frame with diameter Q, given in the table below.
The use of washers is recommended in the event that the support surface does not completely cover the rubber surface.
Respect the tightening torque of the mount.
In case of any doubt, contact the technical department.

The vibration isolators AMC-MECANOCAUCHO® have a double-bonded design, which makes them suitable to withstand high dynamic forces. The dome-shaped rubber design of this vibration isolator allows progressive rigidity in the event of an overload. This fact allows to limit the movement of the suspended element. Symmetric stiffness is achieved using 2 pieces that are vertically opposite. One is installed supporting the load and the other is supporting the rebound forces.

The following graph shows the typical deformation behavior of the part under compressive and tensile loads.

The following picture shows, in a finite element model, how the mount behaves when it is loaded and it makes contact with the snubber.

They are ideal to be used in mobile applications that are exposed to compressive and tensile forces, for example, on-board mounting of equipment on ships, cabins, road transport such as motors, pumps, generator sets.

They can also be used, thanks to their design, to isolate electrical cabinets suspended, both as stabilizers working under compression/tension loads or in shears with a durable and stable rigidity over time.