DBZ, A & BDownload PDFCatalogue No.:UT-DBZ | Revision 00

Metaflex Couplings Type DBZ-DBZ-A and DBZ-B are designed for light and medium duty service at slow as well as high speeds. Their main use is for electric motor/turbine and gearbox driven equipments which are relatively free from shock loads or reversing torques. These couplings accommodate misalignment in all directions as well as end float. Type DBZ has a very compact construction with small gap between shaft ends. Type DBZ-A has one hub extended to accommodate a lock nut on one shaft or higher DBSE. Type DBZ-B has both hubs extended for lock nuts on both shafts or for greater DBSE.

General Assembly Drawing

DBZ, A & B Diagram

Dimensions and Standard Sizes

Size Rating HP/100 Max Bore Max Speed A Dia B E G H J K
  RPM NM NM RPM MM MM MM MM MM MM
50 0.25 18 9000 51 22 22 25 8 13 25
62 0.42 20 8200 62 28 28 30 10 44 30
75 0.60 25 7800 68 29 29 37 10 27 45
101 1.20 29 7100 83 35 35 43 18 35 52
126 2.40 35 6500 98 38 41 52 24 43 62
163 3.50 50 6000 117 43 48 70 24 43 62
201 5.30 55 5500 138 49 54 83 24 49 75
226 11.00 65 5200 156 60 67 96 30 64 97
263 15.00 75 4800 181 70 76 113 33 71 110
301 22.30 90 4500 208 79 87 129 38 81 124
351 44.90 100 4100 241 94 103 148 45 97 149
401 57.00 112 3900 279 106 118 168 49 110 170
451 75.00 125 3600 321 121 133 187 54 119 184

Engineering Data

Size Weight Inertia
MR^2
Torsional
Stiffness
End Float
+ -
Max Parallel
Misalignment
Bolt Tightening Torque
  KG KG.M^2 MNM/Rad MM MM NM
50 0.3 0.0001 0.003 0.60 0.17 2.7
62 0.7 0.0002 0.005 0.70 0.20 4.0
75 0.9 0.0005 0.007 0.80 0.20 4.0
101 1.5 0.0014 0.016 0.96 0.23 11.0
126 2.5 0.0032 0.075 1.16 0.27 18.0
163 3.9 0.0067 0.100 1.45 0.27 18.0
201 6.8 0.0170 0.170 1.70 0.33 34.0
226 10.0 0.0310 0.320 1.95 0.40 58.0
263 15.5 0.0674 0.500 2.25 0.47 85.0
301 23.5 0.1210 0.800 2.60 0.56 130.0
351 38.5 0.3020 1.500 3.00 0.66 240.0
401 59.0 0.5520 2.000 3.50 0.76 270.0
451 82.0 1.0220 2.500 3.90 0.83 350.0
Multiply MR^2 Inertia figures by 4 to obtain GD^2 valuues. Weight & Inertia are at maximum bore. Permissible Angular misalignment is 1.0 degree at 1500 rpm and 0.5 degree at 3000 rpm per disc pack. Standard construction has hubs class 2 IS 2004 & Disc Packs Stainless Steel. Alternative materials can be furnished on request.For plated bolts reduce tightening torque by 20 %. Couplings can be supplied with different dimensions H, J, K ( DBSE) on request.
Download PDFCatalogue No.:UT-DBZ | Revision 00