rubber buffers conical

description	article number	D(mm)	H(mm)	C(mm)	d(mm)	I(mm)	shorehardness+/-5
Typ DK 12x12	5840	12	12	9	M4	10	57
Typ DK 14x6	5843	14	6	7 ²⁾	M4	8	57
Typ DK 14x6	5841	14	6	7 ²⁾	M4	10	57
Typ DK 14x6	5842	14	6	7 ²⁾	M4	15	57
Typ DK 15x12	5844	15	12	12	M6	18	57
Typ DK 20x13	5845	20	13	9 ²⁾	M6	10	57
Typ DK 20x13	5846	20	13	9 ²⁾	M6	18	57
Typ DK 22x18	5847	21,5	17,5	16 ²⁾	M8	35	57
Typ DK 25x12	5848	25	12	18	M6	18	57
Typ DK 25x17 ¹⁾	5483	25	17	20	M6	10	57
Typ DK 25x17 ¹⁾	5849	25	17	20	M6	12	57
Typ DK 25x17 ¹⁾	5488	25	17	20	M6	18	57
Typ DK 25x17 ¹⁾	5850	25	17	20	M6	30	57
Typ DK 25x17 ¹⁾	5851	25	17	20	M8	20	57
Typ DK 30x15	5710	30	15	20	M8	20	57
Typ DK 30x25	5852	30	25	18 ²⁾	M8	23	57
Typ DK 35x40 ¹⁾	5853	35	40	29	M8	23	57
Typ DK 40x30	5854	40	30	14 ²⁾	M10	28	57
Typ DK 45x21 ¹⁾	5855	45	21	40	M8	20	57
Typ DK 50x17 ¹⁾	5856	50	17	39	M10	28	57
Typ DK 50x18	5536	50	18	35	M10	28	57
Typ DK 50x30 ¹⁾	5601	50	30	35	M10	28	57
Typ DK 50x40 ¹⁾	5857	50	40	30	M10	28	57
Typ DK 50x50	5858	50	50	30	M10	28	57
Typ DK 75x25 ³⁾	5859	75	25	45	M12	32	57
Typ DK 75x25 ³⁾	5860	75	25	45	M12	37	57
Typ DK 80x30 ¹⁾	5556	80	30	70	M12	37	57
Typ DK 125x45 ¹⁾	5861	125	45	115 ²⁾	M16	46	57

exemplary table in 57 shore with zinc-galvanized metal components - data on pressure- and thrust strain on request

¹⁾ contact surface bale-shaped ²⁾ without radius ( R ) ³⁾ square shape

schematic drawing of a rubber-metal bearing with outer thread on one side and a conical elastomer corpus

generic data on storage time and duration of operation of elastomers and rubber-metal components

the prescribed storage time of our products is in accordance to DIN 95360:

storage time
from initial delivery				max. 10 quarter years (storage prior to installation)
from initial installation				max. 20 quarter years (storage prior to installation)

as maximum storage time, we adhere to the guidelines of ISO 2230:

group classification	initial storage time	extended storage time (after checking the elements)
group A material (NR, SBR,BR,…)	5 years	2 years
group B material (NBR, CR, IIR,…)	7 years	3 years
group C material (EPDM, silicones,…)	10 years	5 years
To be noted: a deviation from the storage temperature of 25° C results in altered storage times - a storage temperature of +10 ° C ( from 25° C ) reduces the storage time by 50%, a storage temperature of -10 ° C ( from 25° C ) extends the storage time by 50%

the duration of operation - in accordance to DIN 95360 - is specified as below:

duration of operation
operating temperature [ °C ]				allowed duration of operation in years with up to 3000 operating hours ⁴
-30 to 55				10
-30 to 80				5
⁴ with excess of 3000 operating hours per year and/or the influence of aggressive media such as e.g. ozone, oil mist, salt water or salt-containing air, the possible duration of operation may reduce significantly

In general, if applied within the allowed load range and owing to the natural ageing process of rubber, a recommended duration of operation of max. 6 years must be assumed. Latest after this period, an inspection and assessment of a representative number of components should be executed.

Rubber-metal components and form-based rubber parts are maintenance-free during the operational period.

Replacement is due, if:
- by means of setting and creeping towards the direction of pressure only 70% of the initial rubber thickness is achieved
- by means of the influence of weathering several clearly visible cracks per cm² rubber surface have formed
- the items have swelled significantly under exposure of non-permissible oil wetting
- a loss of the rubber-metal adhesion has occured ( e.g. due to corrosion of the metal components )
- mechanical damage can be observed, which can lead to a further destruction of the product due to the notch sensitivity of the caoutchouc

The above information is provided in all conscience and to the best of knowledge, however, the former recommendation can only serve as a theoretical guideline, and does not absolve the user from the neccessity of own assessments and test procedures. bwz® Schwingungstechnik GmbH expressedly excludes any and all liability for damages or disadvantages whatsoever, even in regard to third party protective rights.