B N Couplings / N-EUPEX COUPLING

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TYPE - BN

BN B Couplings consists of graded cast iron hubs and a set of 'H' shaped highly resilient blocks which accommodates parallel, angular and axial misalignments and absorbs torsional vibrations. N flex spacer couplings (BNS) are suitable for 'Back pullout pumps' in which the impeller can be disassembled without disturbing motor and pump from the base frame.

Product Description

Bn B Couplings consists of graded cast iron hubs and a set of 'H' shaped highly resilient blocks which accommodates parallel, angular and axial misalignments and absorbs torsional vibrations. N flex spacer couplings (BNS) are suitable for 'Back pullout pumps' in which the impeller can be disassembled without disturbing motor and pump from the base frame.


Sizes- 68 To 250

Sizes - 110 To 250

Sizes - 80 To 250

Download Catalogue
Coupling Size Rated Torque N-m Kw at 100 RPM Max. Speed RPM Max. Bore (mm) Dimensions (mm) Weight (Kg) M.I (WR2) Kg-m
D1 D2 D3 ØA ØB1 ØB2 ØB3 L1 L2 T1 T2 T3 T4 M DBSE TL1 TL2 RN (B) RN (A) RNS (H) RN (B) RN (A) RNS (H)
68 B 34 0.36 5000 24 28 - 68 46 - - 20 - 21 8 - - - - 43   0.63 -   0.0003 -  
80 B,H 60 0.63 5000 30 ' 38 - 80 68 - 55 30 45 31 10 - 7 - 100 140 63 175 215 151 . - 2.8 2.9 0.0012 - 0.0014 0.0015
95 B,H 100 1.1 5000 42 42 - 95 76 - 70 35 45 30 12 - 9 - 100 140 73 180 220 2.6 - 3.9 4.2 0.0027 - 0.0028 0.0031
110 A,B,H 160 1.7 5000 48 48 38 110 86 62 80 40 50 34 14 20 11 33 100 140 180 83 190 230 270 3.9 3.5 5.8 6.2 6.6 0.0055 0.0047 0.0056 0.006 0.0064
125 A,B,H 240 2.5 5000 55 55 45 125 100 75 90 50 50 36 18 23 11 38 100 140 180 103 200 240 280 6.2 5.6 8.2 8.7 9.2 0.0107 0.0095 0.0099 0.010 0.011
140 A,B,H 360 3.8 4900 60 60 50 140 100 82 100 55 65 34 20 28 15 43 140 180 113 260 300 . 6.9 7 11.8 12.3 . 0014 0.015 0.019 0.020
160 A,B,H 560 5.9 4250 65 65 58 160 108 95 108 60 70 39 20 28 15 47 140 180 124 270 310 9.4 9.8 15.2 16.0 0.025 0.028 0.032 0.034
180 A,B,H 880 9.2 3800 75 75 65 180 125 108 125 70 80 42 20 30 15 50 140 180 144 290 330 14 14.2 21.0 21.9 0.045 0.049 0.054 0.058
200 A,B,H 1340 14 3400 85 85 75 200 140 122 140 80 90 47 24 32 18 53 180 200 250 164 350 370 420 20 19.8 30.3 30.9 32.1 0.08 0.085 0.100 0.105 0.110
225 A,B,H 2000 21 3000 90 90 85 225 150 138 150 90 100 52 18 38 18 61 180 200 250 84 370 390 440 24.5 27 39 39.7 41.5 0.135 0.15 0.160 0.170 0.180
250 A,B,H 2800 29 2750 100 100 95 250 165 155 165 100 110 60 18 42 21 69 200 250 205 410 460 34 37 54.7 56.5 0.23 0.25 0.280 0.300
G1 = 2-4mm for sizes 68 to 140, 2-6 mm for sizes 160 to 225 & 3-8mm for size 250.
G2 = 5mm for sizes 80to 140, 6mm for sizes 160 to 225 & 8mm for size 250.