siemens flender gear motor catalogue H2-HV-7-A Helical gear box H2

Flender/Flender Gear Units/Helical gear box H2

8.0 9.0 2.0 Source : Ref. 4. Dehulling and Splitting Pulses 3 Table 2 Characteristics of Field Pea Cultivars ( . sativum .) Hull Seed coat Cotyledon Hull thickness breakage adhesion Cultivar (% of seed) (mm) (%, with TADD) () Bellevue 7.3 0.0 1.1 8.8 Titan 7.0 0.0 1.9 6.9 Trapper 7.6 0.0 4.3 1.5Tara 8.5 0.0 6.1 7.9Lenca 7.4 0.0 3.7 1.8Tipu 7.0 0.0 2.9 9.6 Source : Ref. 5. axis above and below them. The two cotyledons are not physically attached to each other except at the axis and weak protection provided by the seed coat. Thus the seed isunusually vulnerable to breakage. Table 2 shows the thickness of the seed coat (or hull) and the force required to separate the two halves of the cotyledons in eld peas ( Pisum satiyum , .), measured in newtons () using an Instron Universal Testing machine. The required force is in the range 7.9.8 . The seed coat breakages, measured using tan-gential abrasive dehulling device (TADD) (, vary from 1.1% of the seed mass to 6.1%,which demonstrates the large variability in durability of the hull among varieties of peas. The outermost layer of the seed coat is the cuticle, and it can be smooth or rough. Both the micropyle and hilum have been related to the permeability of the testa and to water absorption. 2.2 Seed Composition Table 3 gives the approximate chemical and nutritional composition of the pulses. The proteins, ether extract (including lipids), phosphorus, and iron are contained in the cotyle- dons for the most part. About 8% of the crude ber and 3% of calcium are concentrated in the seed coat. Although the embryo is rich in nutrients, it is the smallestpart of the seed and holds only 3% of the total seed nutrients The starch is found mostly in the cotyledon, and the granules are embedded in dense proteinaceous matrix. The average size of starch granule is on the order of 2m. The starch granules are mixture of amylose and amylopectin. The pulses have larger sugar content than cereals. The hull tightly envelopes the end