MOPLA 1

The Mopla 1 range is based on a single spring element with alternative mounting methods as shown in the pictures below.

Installation

Except for the type Mopla GH, these mounts are secured to both the isolated equipment and the floor or a sub-base. Because of the relatively high deflection compared to rubber based mounts, it is necessary to balance deflection where loading is different at each mounting point to ensure that the isolated equipment remains level. This is provided for within the range where different spring rates are provided within the same overall height. For small differences in deflection, this can be easily accommodated using spacers or washers

Typical Applications

Air conditioning units, compressors, refrigeration units, transformers, generators.

Materials

Rubber: Vibrostop Elastomer with metal insert.

Spring: C72 spring steel with powder coated epoxy coating.

Dimensions and Data Mopla-1 GG

Part No:	Design Load Kg	Optimum deflection	Natural Frequency	Rate Kg/mm	Unloaded height	1
Mopla 1-
GG/A 25	25	6.5	6	4.5	55	Mopla 1 A series
GH/A 25					62
GX/A 25					55
XX/A 25					52
GG/A 45	45	6.5	6	7	55
GH/A 45					62
GX/A 45					55
XX/A 45					52
GG/A 85	85	6.5	6	13	55
GH/A 85					62
GX/A 85					55
XX/A 85					52
GG/B 30	30	14.5	4	2	75	Mopla 1 B series
GH/B 30					88
GX/B 30					73
XX/B 30					70
GG/B 50	50	14.5	4	3.5	75
GH/B 50					88
GX/B 50					73
XX/B 50					70
GG/B 90	90	14.5	4	6	775
GH/B 90					88
GX/B 90					73
XX/B 90					70
GG/C 55	55	27	3	2	105	Mopla 1 C series
GH/C 55					113
GX/C 55					103
XX/C 55					100
GG/C 100	100	27	3	4	105
GH/C 100					113
GX/C 100					103
XX/C 100					100
GG/C 180	180	27	3	6.8	105
GH/C 180					113
GX/C 180					103
XX/C 180					100
GG/D 12	12	20	3.5	0.6	80	Mopla 1 D series
GH/D 12					93
GX/D 12					93
XX/D 12					75
GG/D 20	20	20	3.5	1	80
GH/D 20					93
GX/D 20					93
XX/D 20					75

GG/D 32	32	20	3.5	1.6	80
GH/D 32					93
GX/D 32					93
XX/D 32					75
CV-195	195	26	3	7.6	116	CV Series
CV-340	340	23	3.3	14.9	116
CV-600	600	33	2.7	18.2	186
CV-910	910	33	2.7	27.7	186

Note: When selecting mounts, firstly identify the loading at each mounting point. If different, and the loading cannot be equalised by moving mounting points, then select mounts which start at the same overall height ‘H’ and will result in similar deflection under the loading at each point. If in doubt, calculate the deflection at each point to see the difference in the static deflection.

Example. A 4 point mounting where 2 mounts experience a static load of 25Kg and the other 2 experience 35Kg.

If we choose GG/A 25 and GG/A 45 mounts the relative deflections would be as follows:

25Kg/4.5Kg/mm = 5.6 deflection and 35Kg/7Kg/mm = 5mm deflection. The small difference would be acceptable in this case. With springs with lower rates (i.e. with larger deflection under design load) it is more important to ensure that the mounts are suitably positioned to achieve a common deflection or different model types are selected for each point load.