FLENDER Standard Couplings - DS TECH

FLENDER Standard Couplings
Flexible Couplings — N-EUPEX and N-EUPEX DS Series
General information
© Siemens AG 2011
Power ratings of the N-EUPEX DS series
Size Rated torque Torsional stiffness at
50 % capacity
utilization
Assembly
Permitted shaft misalignment at
speed n =1500rpm
Gap dimension 1) Axial Radial Angle
7
Flexibles of sizes 66 to 272 are of the compound type with a hard core and soft thrust pieces.
Sizes 305 to 556 are completely made of 90 ShoreA NBR material.
For maximum coupling torque:
T Kmax =2.0⋅ T KN
For coupling overload torque:
T KOL =3.0⋅ T KN
For coupling fatigue torque:
T KW =0.15⋅ T KN
Torsional stiffness and damping
The values stated in the above table apply to a capacity utilization
of 50 %, an excitation amplitude of 10 % T KN with the frequency
10 Hz and an ambient temperature of 20 °C. Dynamic
torsional stiffness is dependent on load and increases in proportion
to capacity utilization. The following table shows the correction
factors for different rated loads.
C Tdyn = C Tdyn 50 % ⋅ FKC
T KN C Tdyn ∆S ∆K a ∆K r ∆K w
Nm kNm/rad mm mm mm °
66 19 0.73 1.0 0.2 0.2 0.15
76 34 1.36 1.0 0.2 0.2 0.15
88 60 2.62 1.0 0.2 0.2 0.12
103 100 4.00 1.0 0.2 0.2 0.12
118 160 6.30 1.0 0.2 0.2 0.10
135 240 10.5 1.0 0.25 0.25 0.10
152 360 13.6 1.0 0.25 0.25 0.10
172 560 27.2 2.0 0.3 0.3 0.10
194 880 47.0 2.0 0.3 0.3 0.10
218 1340 70.0 2.0 0.3 0.3 0.09
245 2000 106 2.0 0.35 0.35 0.09
272 2800 149 2.5 0.35 0.35 0.08
305 3900 214 2.5 0.4 0.4 0.08
340 5500 350 2.5 0.4 0.4 0.08
380 7700 480 2.5 0.5 0.5 0.08
430 10300 730 2.5 0.5 0.5 0.08
472 13500 990 2.5 0.6 0.6 0.08
514 16600 1270 2.5 0.6 0.6 0.07
556 21200 1540 2.5 0.65 0.65 0.07
Capacity utilization T N / T KN
20 % 40 % 50 % 60 % 70 % 80 % 100 %
Correction factor FKC 0.7 0.9 1 1.1 1.2 1.3 1.5
The damping coefficient is Ψ =1.4
Torsional stiffness and damping is further dependent on the ambient
temperature and the frequency and amplitude of the torsional
vibration excitation. More precise torsional stiffness and
damping parameters on request.
Permitted shaft misalignment
The permitted shaft misalignment depends on the operating
speed. As the speed increases, lower shaft misalignment values
are permitted. The following table shows the correction factors
for different speeds.
The maximum speed for the respective coupling size must be
noted!
∆K perm = ∆K 1500 ⋅ FKV
Speed in rpm
500 1000 1500 3000
Correction factor FKV 1.6 1.20 1.0 0.70
The axial misalignment may occur dynamically at frequencies
up to 10 Hz. For fitting, a maximum gap dimension of
Smax.=S+∆S and a minimum gap dimension of
Smin.=S–∆S are permitted.
Shaft misalignments ∆K a , ∆K r and ∆K w may occur simultaneously.
(450) 655-7447
info@pt-dstech.com
www.dstech.ca
1275 Newton, local 15
Boucherville, Qc,
Canada, J4B 5H2
1)
Does not apply to type HDS.
7/8 Siemens MD 10.1 · 2011