Steel Disc Couplings TND HDV | RINGFEDER®

Combination of Standard Hub and Inverted Hub, Double-Jointed, with Spacer, Shaft-Hub Connection by Keyway according to DIN 6885-1

  • 9 Sizes
  • Max. Bore Diameter d1: 32-175 mm (1.259-6.889 inch); d2: 25-120 mm (0.984-4.724 inch)
  • Max. Outer Diameter D1: 70.5-345 mm (2.776-13.583 inch)
  • Hub Distance E: 60-300 mm (2.362-11.811 inch)
  • Overall Length L: 105-526 mm (4.134-20.709 inch)
  • Rot. Speed nmax: 2,100-8,400 1/min
  • Torque TKN: 170-44,000 Nm (125.36-32,452.73 ft·lb)

Product Characteristics

Your Benefits

The type RINGFEDER® TND HDV is a torsionally stiff, backlash-free steel disc coupling consisting of a standard hub H and an inverted hub V, connected by a spacer D in standardized or individually customized length. Using high-strength screws, one disc pack each is connected to the spacer and one hub, thus achieving the function of a double-cardanic system.

Depending on the coupling size, two different disc packs are available:

  • Type HD (High Deflection) for increased compensation capability at occurring shaft misalignments.
  • Type HT (High Torque) with larger power density for higher requirements on transmissible torque.

The double-jointed design with two disc packs compensates for radial (adjustable via the spacer length), angular and axial shaft misalignments.

 

Steel disc couplings of the RINGFEDER® TND HDV type are particularly convincing due to the following features:

  • Completely backlash- and maintenance-free
  • Highly effective compensation of angular, axial and radial shaft misalignment
  • Torsionally rigid with high torsional stiffness
  • Low restoring forces in case of shaft misalignment due to optimum disc pack design
  • Bridging of large shaft distances by means of spacers in various standard and freely customizable special lengths
  • Bore diameter in standard hub H d1 up to 175 mm (6.889 inch), in inverted hub V d2 up to 120 mm (4.724 inch)
  • Transmissible torque TKN up to 44,000 Nm (32,452.73 ft·lb) / Tkmax up to 77,000 Nm (56,792.29 ft·lb)
  • Rotational speeds depending on spacer length nmax up to 8,400 1/min
  • Efficient realization of customer-specific solutions at short delivery times thanks to modular design

 

Technical Information

  • Without further specifications, we deliver as standard: Bore tolerance H7; Keyway acc. to DIN 6885-1; Keyway width tolerance P9; Set screw per hub.
  • From a peripheral speed of 30 m/s, separate balancing of the individual coupling parts is recommended.
  • Without further instructions on balancing, the coupling parts are balanced individually according to DIN 21940-11 in quality G 6,3 at 1,500 1/min. The hubs are balanced half key (before grooving), the spacer without screwed-on disc packs.

Moreover, please observe the detailed selection and operating criteria in the documents Product Paper Steel Disc Couplings RINGFEDER® TND and Tech Paper Steel Disc Couplings RINGFEDER® TND HDV.

 

ATEX Compliance

For maximum safety in explosion-endangered areas, RINGFEDER® Steel Disc Couplings can of course be supplied in compliance with ATEX according to Product Directive 2014/34/EU and DIN EN ISO 80079-36:2016 if required.

 

Your Contact

You have specific questions, require technical support or you are interested in a customized solution? Our experts in Engineering and Sales are more than happy to assist you. Contact us quickly and easily via our request form, by e-mail or telephone.

High-Quality Steel Disc Packs | RINGFEDER®

High-Quality Disc Packs

The characteristic and functional key element of the powerful steel disc couplings of the RINGFEDER® TND series are disc packs developed on the basis of in-depth FEM analysis. They consist of multiple circular, torsionally flexible single discs made of stainless spring steel which are connected by means of high-precision sleeves to form a compact unit. High-strength screws alternately connect the disc packs, if necessary via mounted spacers, to the coupling hubs, so that the required torque is transmitted reliably, precisely and safely by the steel discs which are loaded by tension and compression. At the same time, this ensures the desired compensation capability for angular, axial and, depending on the coupling type, also radial shaft misalignments at minimum restoring forces.

Technical Data & CAD Models

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CAD
Größe/Size
TKN HD
Nm
TKN HT
Nm
nmax
1/min
dpre
mm
d1kmax
mm
d2kmax
mm
C1
mm
C2
mm
EI1
mm
E
mm
H3
mm

D1


mm
D2
mm
D4
mm
L2
mm
L
mm
SB
mm
SD
mm
nSc
Stück
Gwsb
kg
Jsb
10-3kgm2
CTdynHD
106Nm/rad
CTdynHT
106Nm/rad
ΔKaHD
mm
ΔKaHT 
mm
ΔKwHD
°
ΔKwHT
°
ΔKrHD
mm
ΔKrHT
mm
47 170 230 8400 10 32 25 39,5 39,5 65,5 100 7,5 70,5 47 37 5 145 11 24 6 1,6 0,75 0,059 0,062 1 0,6 2 1,4 1,5 1,1
47 170 230 8400 10 32 25 39,5 39,5 105,5 140 7,5 70,5 47 37 5 185 11 24 6 1,7 0,8 0,051 0,053 1 0,6 2 1,4 2,2 1,5
47 170 230 8400 10 32 25 39,5 39,5 25,5 60 7,5 70,5 47 37 5 105 11 24 6 1,4 0,69 0,071 0,075 1,0 0,6 2 1,4 0,8 0,6
63 320 420 6800 14 42 32 45 45 33 70 9 88 62,5 48 8 123 14 32 6 2,9 2,33 0,123 0,134 1,0 0,8 2 1,4 1 0,7
63 320 420 6800 14 42 32 45 45 43 80 9 88 62,5 48 8 133 14 32 6 2,9 2,37 0,123 0,134 1 0,8 2 1,4 1,1 0,8
63 320 420 6800 14 42 32 45 45 63 100 9 88 62,5 48 8 153 14 32 6 3 2,46 0,116 0,127 1 0,8 2 1,4 1,5 1,1
63 320 420 6800 14 42 32 45 45 103 140 9 88 62,5 48 8 193 14 32 6 3,2 2,63 0,105 0,114 1 0,8 2 1,4 2,1 1,6
82 750 1050 5400 15 55 44 55 55 95 140 10,5 116 82 64 10 205 16 40 6 6,7 9,23 0,246 0,277 1,4 0,8 2 1,4 2,1 1,5
82 750 1050 5400 15 55 44 55 55 135 180 10,5 116 82 64 10 245 16 40 6 7 9,65 0,226 0,251 1,4 0,8 2 1,4 2,8 2,1
82 750 1050 5400 15 55 44 55 55 55 100 10,5 116 82 64 10 165 16 40 6 5,4 8,83 0,271 0,308 1,4 0,8 2 1,4 1,4 1,1
98 1350 1750 4600 19 65 50 60 60 51 100 12 140,5 98 77 11 171 19 47 6 9,9 20,35 0,513 0,543 2,0 1,2 2 1,4 1,5 1
98 1350 1750 4600 19 65 50 60 60 91 140 12 140,5 98 77 11 211 19 47 6 10,4 21,21 0,469 0,494 2 1,2 2 1,4 2,1 1,5
98 1350 1750 4600 19 65 50 60 60 131 180 12 140,5 98 77 11 251 19 47 6 10,8 22,07 0,433 0,454 2 1,2 2 1,4 2,8 2
118 2400 3000 3800 25 85 60 75 75 77 140 13 166,5 118 90,5 12 227 21 55 6 16,7 48,34 0,855 0,884 2,4 1,6 2 1,4 2,1 1,5
118 2400 3000 3800 25 85 60 75 75 117 180 13 166,5 118 90,5 12 267 21 55 6 17,3 50,39 0,803 0,829 2,4 1,6 2 1,4 2,8 2
118 2400 3000 3800 25 85 60 75 75 37 100 13 166,5 118 90,5 12 187 21 55 6 16 46,28 0,914 0,948 2,4 1,6 2 1,4 1,4 1
141 4000 5200 3400 30 95 75 90 90 64 140 15 198,5 141 114 14 244 23 64 6 26,4 98,01 1,306 1,362 2,8 1,6 2 1,4 2 1,5
141 4000 5200 3400 30 95 75 90 90 104 180 15 198,5 141 114 14 284 23 64 6 28,5 105,33 1,229 1,279 2,8 1,6 2 1,4 2,7 2
169 6500 8500 3000 39 115 90 125 125 71 180 21 238 169 135 16 321 29 81 6 52,3 299,74 2,375 2,898 3 2,4 2 1,4 2,6 1,9
169 6500 8500 3000 39 115 90 125 125 31 140 21 238 169 135 16 281 29 81 6 50,7 289,79 2,467 3,035 3 2,4 2 1,4 2 1,4
169 6500 8500 3000 39 115 90 125 125 141 250 21 238 169 135 16 391 29 81 6 55 317,15 2,231 2,686 3 2,4 2 1,4 3,8 2,7
205 21000 26000 2500 59 140 115 160 160 62 200 28 295 205 170 22 382 32 112 8 105 951,03 8,995 9,142 2,2 1,2 1 0,8 1,4 1,2
205 21000 26000 2500 59 140 115 160 160 112 250 28 295 205 170 22 432 32 112 8 107,8 975,71 8,265 8,389 2,2 1,2 1 0,8 1,8 1,5
254 36000 44000 2100 79 175 120 200 200 50 224 32,5 345 254 180 26 450 40 133 8 169,2 2131,73 14,975 15,19 2,2 1,6 1 0,8 1,6 1,3
254 36000 44000 2100 79 175 120 200 200 76 250 32,5 345 254 180 26 476 40 133 8 171,2 2152,56 14,302 14,497 2,2 1,6 1 0,8 1,8 1,5
254 36000 44000 2100 79 175 120 200 200 126 300 32,5 345 254 180 26 526 40 133 8 175 2192,61 13,163 13,328 2,2 1,6 1 0,8 2,2 1,8
Smart Modular System for Maximum Flexibility | RINGFEDER®

Smart Modular System

Thanks to the unitized design of the RINGFEDER® TND series and the accompanying highly flexible modular system, consisting of several disc pack and hub types, mounting options as well as spacer variants and lengths, there is always one coupling version available that is optimally suited for your individual application. Furthermore, customized special solutions can also be realized at short delivery times in specific case of need. For example, in addition to other hub combinations and the replacement of hubs by connecting flanges, functional supplements like brake disks or drums as well as anti-flail devices are also possible.

Downloads

Product Paper Steel Disc Couplings RINGFEDER® TND

Product Paper Steel Disc Couplings RINGFEDER® TND

Tech Paper Steel Disc Couplings RINGFEDER® TND HDV

Tech Paper Steel Disc Couplings RINGFEDER® TND HDV

Further downloads including certificates, instruction manuals and product images are available to you in our Download Center:

Downloads