FLENDER Standard Couplings Torsionally Rigid All-Steel Couplings — ARPEX ARS-6 Series © Siemens AG 2015 Further hubs and flanges Clamping hub ■ Selection and ordering data Standard clamping hub types 124 and 125 can be combined with any spacer. It should be noted that the clamping hub can be used only as an "N hub" (hub core outside). Clamping hub as "B hub" (hub core in spacer tube) on request. Transmissible torque and maximum bore diameter are smaller on a B hub vari- ant than stated below. The clamping connections are designed to enable the specified maximum torques to be transmitted. These maximum torques may not be exceeded.
The mathematical coefficient of friction between the shaft and the clamping hub is μ = 0.16. Transmissible torque Function ARPEX clamping hubs transmit torque with the aid of a flexible press fit. By pulling the clamping ring on by means of the tight- ening screws the necessary surface pressure is applied in the "shaft/hub" contact area. After the tightening operation the clamping ring lies up against the clamping hub. The gap dimen- sion between the clamping hub and the clamping ring is then zero. This has the effect that even with repeated fitting and dis- mounting the balancing condition is maintained (no wobble ef- fect). Clamping hubs can be clamped as often as required.
It must be ensured that the taper surfaces are adequately lubri- cated. Fitting clearance and surface roughness The transmissible torques take into account the maximum fitting clearance and maximum surface roughness. For other shaft tol- erances reduced torques or other bore tolerances must be used. The surface roughness of the shaft should be ≤ R a = 1.6 μ m. The shaft tolerance must be specified in the order. To specify, "-Z" must be added to the article number and the order code "Y26" with plain text specification of the shaft tolerance for D1 must be added as well. The fit pairing G6/h6 should be used wherever possible.
Type 125 Type 124 6 NL NL L2 ШDA ШD1 ШND1 ШDA ШND1 ШD1 A G_MD10_EN_00152 6/24 Siemens MD 10.1 · 2015 Size Clamping hub Dimensions in mm Mass moment of inertia Article No. Weight Order codes for bore diameters and toler- ances are specified in catalog section 3 DA Type D1 D1 ND1 NL L2 A J m mm min. max.
kgm2 kg 78-6 124 15 25 48 35 19 6 0.0002 2LC0470-0LM90-0AA0 0.5 125 2LC0470-0LN90-0AA0 105-6 124 25 45 74 40 22 8 0.0012 2LC0470-1LM90-0AA0 1.0 125 2LC0470-1LN90-0AA0 125-6 124 30 50 86 45 28 8 0.0026 2LC0470-2LM90-0AA0 1.6 125 2LC0470-2LN90-0AA0 140-6 124 30 60 103 50 33 9 0.0051 2LC0470-3LM90-0AA0 2.4 125 2LC0470-3LN90-0AA0 165-6 124 38 70 118 55 33 9 0.0096 2LC0470-4LM90-0AA0 3.4 125 2LC0470-4LN90-0AA0 175-6 124 42 75 122 65 43 10 0.0141 2LC0470-5LM90-0AA0 4.3 125 2LC0470-5LN90-0AA0 195-6 124 48 75 135 70 44 9 0.0231 2LC0470-6LM90-0AA0 6.2 125 2LC0470-6LN90-0AA0 210-6 124 55 85 141 75 49 9 0.0309 2LC0470-7LM90-0AA0 7.2 125 2LC0470-7LN90-0AA0 240-6 124 65 95 164 90 59 10 0.0648 2LC0470-8LM90-0AA0 11.4 125 2LC0470-8LN90-0AA0