533641-45

BECA (1) Natural frequency : 8 to 14 Hz DESCRIPTION The BECA mounting comprises one piece elastomer bonded to a top and bottom plate. • Top plate: smooth or threaded (welded nut) hole. • Bottom plate: Fixing lugs or direct bearing on the ground. • Bonded rubber. • Domed rubber ring. • Anti-slip bead or grooved anti-slip sole. • Removable protective top cover : protects the rubber and distributes the load. OPERATION The design of the BECA mounting gives the following basic characteristics : • Transverse elasticity approximately the same as the axial elasticity (equi-frequency). • Rubber works in compression. • Progressive buffer against shocks or accidental overload. • Anti-slip (may be placed directly on the ground). Advantages : • The machine may be placed (with its mountings) directly on the ground. • Very slim. • Speed of fixing. • Simple removal of the assembly. • Extensive range: 3 hardnesses of rubber for 6 existing sizes, allowing the mounting to be optimised as a function of the load and stimulation frequency. • A choice of 3 fixing styles. Recommendations : • In order not to affect the suspension of the machine, all external connections must be flexible. • BECA mountings can be used for fixed, well-balanced rotating machinery, otherwise a ballasting slab should be used. (1) Natural frequencies with max/min loads, see : OPERATING CHARACTERISTICS. Nota : BECA mountings can be replaced by PAULSTRADYN mountings. 72 DIMENSIONS Section XX’ Section XX’ ØA ØC ØA Section XX’ Ø C1 J B B1 B B1 ØC ØM D F ØM X X X’ X’ Ø Ø E E X X’ Fig. a Fig. b Fig. c BECA with anti-slip base BECA with lugs, smooth hole BECA with lugs, threaded hole Reference Ø A B B1 Ø C Ø D Ø E F J Ø M Weight Diamond base C1 mm mm mm mm mm g mm mm mm mm Smooth Smooth Threaded hole (fig. a) hole (fig. b) hole (fig. c) Type Hardness Anti-slip base Ø 40 Ø 60 Ø 80 Ø 100 Ø 100 Ø 150 Ø 150 Ø 200 Ø 200 45.60 45.60.75 45.60.75 45.60.75 45.60.75 45.60.75 45.60.75 45.60.75 45.60.75 ---533108 -533151 -533202 -- --533581 -533109 -533152 -533203 533641* 533661 533681 -533609 -533652 -533623 40 60 80 100 100 150 150 200 200 20 24 27 30 27.5 41 39 46 44 18 22.5 25 28 25.5 38 36 42 40 * Ø 40, M6 - RAPID nut - max. torque 3 N.m. 8.1 10.2 10.2 14.2 14.2 18 18 M6 M6 M8 M10 M14 M18 52 6.2 64 76 6.2 90 100 8.2 120 124 10.2 148 182 12.2 214 240 14.5 280 2 2 2 2.5 4 5 19 18 22 22 22 34 34 44 44 50 140 250 420 460 1220 1340 2750 3030 See current price list for availability of items. OPERATING CHARACTERISTICS Nominal static load daN Deflection mm Type Hardness Nominal static load daN Deflection mm 1-4 2-10 3-15 6-25 11-45 11-45 20-80 22-90 30-120 2 2.5 3 3 3 4.5 4.5 4 4 Ø 40 Ø 40 Ø 60 Ø 60 Ø 60 Ø 80 Ø 80 Ø 100 Ø 80 45 60 45 60 75 45 60 45 75 30-130 40-160 50-220 60-250 85-350 125-500 200-825 310-1250 7 4 4 7 6 7 7 6 73 Type Ø Ø Ø Ø Ø Ø Ø Ø 150 100 100 150 150 200 200 200 Hardness 45 60 75 60 75 45 60 75 LOAD/DEFLECTION CURVES IN AXIAL COMPRESSION BECA Ø 40 BECA Ø 60 BECA Ø 100 BECA Ø 150 BECA Ø 80 BECA Ø 200 ASSEMBLY Slab BECA with threaded hole (welded nut) Casing with inaccessible base Mounting axis BECA with smooth hole Anti-rebound (prestressed) BECA mountings in tandem (to double the deflection) All our mountings are identified by conventional markings, either a paint spot or figures indicating the hardness : grey = hardness 45, green = hardness 60, blue = hardness 75. 74