Steel Disc Couplings TND HDH | RINGFEDER®

Standard Hubs, Double-Jointed, without Spacer, Shaft-Hub Connection by Keyway according to DIN 6885-1

  • 11 Sizes
  • Max. Bore Diameter d: 32-215 mm (1.259-8.465 inch)
  • Max. Outer Diameter D1: 70.5-510 mm (2.776-20.078 inch)
  • Hub Distance E: 60-350 mm (2.362-13.779 inch)
  • Overall Length L: 139-830 mm (5.472-32.677 inch)
  • Rot. Speed nmax: 1,700-12,200 1/min
  • Torque TKN: 170-130,000 Nm (125.36-95,833.07 ft·lb)

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Product Characteristics

Your Benefits

The type RINGFEDER® TND HDH is a torsionally stiff, backlash-free steel disc coupling consisting of two standard hubs H as well as 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 HDH 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 d1/2 up to 215 mm (8.465 inch)
  • Transmissible torque TKN up to 130,000 Nm (95,833.07 ft·lb) / Tkmax up to 220,000 Nm (162,263.67 ft·lb)
  • Rotational speeds depending on spacer length nmax up to 12,200 1/min
  • Efficient realization of customer-specific solutions at short delivery times thanks to modular design

 

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.

 

Main Areas of Use

  • Pumps
  • Fans
  • Compressors
  • Generator and Turbine Drives
  • Axial and Radial Blowers
  • Paper and Printing Machines
  • Mixers and Stirrers
  • Extruders
  • Lifting and Traversing Gears
  • Marine Drives
  • Water Screw Drives

 

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.
  • Screwing of disc packs via hexagon socket screws (coupling size 47-141), hexagon head screws (coupling size 169-254) or hexagon head screws with special nut (coupling size 262-316).

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 HDH.

Steel Disc Couplings TND: High-Quality 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
E
mm
H3
mm

D1


mm
D2
mm
L2
mm
L
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 12200 10 32 32 39,5 39,5 60 7,5 70,5 47 5 139 24 6 1,7 0,76 0,071 0,075 1,0 0,6 2 1,4 0,8 0,6
47 170 230 12200 10 32 32 39,5 39,5 100 7,5 70,5 47 5 179 24 6 1,8 0,76 0,059 0,062 1,0 0,6 2 1,4 1,5 1,1
47 170 230 12200 10 32 32 39,5 39,5 140 7,5 70,5 47 5 219 24 6 1,9 0,76 0,071 0,075 1,0 0,6 2 1,4 2,2 1,5
63 320 420 9900 14 42 42 45 45 70 9 88 62,5 8 160 32 6 3,3 2,5 0,126 0,139 1,0 0,8 2 1,4 1 0,7
63 320 420 9900 14 42 42 45 45 140 9 88 62,5 8 230 32 6 3,7 2,8 0,105 0,114 1,0 0,8 2 1,4 2,1 1,6
63 320 420 9900 14 42 42 45 45 80 9 88 62,5 8 170 32 6 3,3 2,6 0,123 0,134 1,0 0,8 2 1,4 1,1 0,8
63 320 420 9900 14 42 42 45 45 100 9 88 62,5 8 190 32 6 3,5 2,7 0,116 0,127 1,0 0,8 2 1,4 1,5 1,1
82 750 1050 7500 15 55 55 55 55 180 10,5 116 82 10 290 40 6 7,7 9,9 0,226 0,251 1,4 0,8 2 1,4 2,8 2,1
82 750 1050 7500 15 55 55 55 55 100 10,5 116 82 10 210 40 6 7,1 9,1 0,271 0,308 1,4 0,8 2 1,4 1,4 1,1
82 750 1050 7500 15 55 55 55 55 140 10,5 116 82 10 250 40 6 7,4 9,5 0,246 0,277 1,4 0,8 2 1,4 2,1 1,5
98 1350 1750 6200 19 65 65 60 60 100 12 140,5 98 11 220 47 6 11,1 21 0,513 0,543 2,0 1,2 2 1,4 1,5 1
98 1350 1750 6200 19 65 65 60 60 180 12 140,5 98 11 300 47 6 12 23 0,433 0,454 2,0 1,2 2 1,4 2,8 2
98 1350 1750 6200 19 65 65 60 60 140 12 140,5 98 11 260 47 6 11,5 22 0,469 0,494 2,0 1,2 2 1,4 2,1 1,5
118 2400 3000 5250 25 85 85 75 75 100 13 166,5 118 12 250 55 6 18,9 52 0,914 0,948 2,4 1,6 2 1,4 1,4 1
118 2400 3000 5250 25 85 85 75 75 140 13 166,5 118 12 290 55 6 19,6 54 0,855 0,884 2,4 1,6 2 1,4 2,1 1,5
118 2400 3000 5250 25 85 85 75 75 180 13 166,5 118 12 330 55 6 20,3 56 0,803 0,829 2,4 1,6 2 1,4 2,8 2
141 4000 5200 4400 30 95 95 90 90 140 15 198,5 141 14 320 64 6 31,7 120 1,306 1,362 2,8 1,6 2 1,4 2 1,5
141 4000 5200 4400 30 95 95 90 90 180 15 198,5 141 14 360 64 6 32,5 130 1,229 1,279 2,8 1,6 2 1,4 2,7 2
169 6500 8500 3650 39 115 115 125 125 140 21 238 169 16 390 81 6 60,2 340 2,467 3,035 3 2,4 2 1,4 2 1,4
169 6500 8500 3650 39 115 115 125 125 180 21 238 169 16 430 81 6 61,8 350 2,375 2,898 3 2,4 2 1,4 2,6 1,9
169 6500 8500 3650 39 115 115 125 125 250 21 238 169 16 500 81 6 64,5 360 2,231 2,686 3 2,4 2 1,4 3,8 2,7
205 21000 26000 2950 59 140 140 160 160 200 28 295 205 22 520 112 8 119,6 1070 8,995 9,142 2,2 1,2 1 0,8 1,4 1,2
205 21000 26000 2950 59 140 140 160 160 250 28 295 205 22 570 112 8 122,4 1100 8,265 8,389 2,2 1,2 1 0,8 1,8 1,5
254 36000 44000 2500 79 175 175 200 200 224 32,2 345 254 26 624 133 8 207,5 2620 14,975 15,19 2,2 1,6 1 0,8 1,6 1,3
254 36000 44000 2500 79 175 175 200 200 250 32,5 345 254 26 650 133 8 209,5 2640 14,302 14,497 2,2 1,6 1 0,8 1,8 1,5
254 36000 44000 2500 79 175 175 200 200 300 32,5 345 254 26 700 133 8 213,3 2680 13,163 13,328 2,2 1,6 1 0,8 2,2 1,8
262 74000 2050 90 180 180 210 210 280 34 420 262 32 700 137 8 261,9 5350 18,116 3,2 1 2,5
316 130000 1700 100 215 215 240 240 350 47 510 316 38 830 172 8 450,1 14430 36,134 3,8 1 3
CAD Größe/Size
 		TKN HD
ft-lbs 		TKN HT
ft-lbs 		nmax
rpm 		dpre
inch 		d1kmax
inch 		d2kmax
inch 		C1
inch 		C2
inch 		E
inch 		H3
inch

D1


inch 		D2
inch 		L2
inch 		L
inch 		SD
inch 		nSc
pcs. 		Gwsb
lbs 		Jsb
lbs-in2 		CTdynHD
106ft-lbs/rad 		CTdynHT
106ft-lbs/rad 		ΔKaHD
inch 		ΔKaHT 
inch 		ΔKwHD
° 		ΔKwHT
° 		ΔKrHD
inch 		ΔKrHT
inch
  47 125.387 169.641 12200 0.394 1.260 1.260 1.555 1.555 2.360 0.300 2.780 1.850 0.197 5.472 0.945 6 3.748 2.597 0.052 0.055 0.039 0.024 0.079 0.055 0.031 0.024
  47 125.387 169.641 12200 0.394 1.260 1.260 1.555 1.555 3.937 0.295 2.776 1.850 0.197 7.047 0.945 6 3.968 2.597 0.044 0.046 0.039 0.024 0.079 0.055 0.059 0.043
  47 125.387 169.641 12200 0.394 1.260 1.260 1.555 1.555 5.512 0.295 2.776 1.850 0.197 8.622 0.945 6 4.189 2.597 0.052 0.055 0.039 0.024 0.079 0.055 0.087 0.059
  63 236.022 309.779 9900 0.551 1.654 1.654 1.772 1.772 2.760 0.354 3.460 2.461 0.315 6.299 1.260 6 7.275 8.543 0.093 0.103 0.039 0.031 0.079 0.055 0.039 0.028
  63 236.022 309.779 9900 0.551 1.654 1.654 1.772 1.772 5.512 0.354 3.465 2.461 0.315 9.055 1.260 6 8.157 9.568 0.077 0.084 0.039 0.031 0.079 0.055 0.083 0.063
  63 236.022 309.779 9900 0.551 1.654 1.654 1.772 1.772 3.150 0.354 3.465 2.461 0.315 6.693 1.260 6 7.275 8.884 0.091 0.099 0.039 0.031 0.079 0.055 0.043 0.031
  63 236.022 309.779 9900 0.551 1.654 1.654 1.772 1.772 3.937 0.354 3.465 2.461 0.315 7.480 1.260 6 7.716 9.226 0.086 0.094 0.039 0.031 0.079 0.055 0.059 0.043
  82 553.178 774.449 7500 0.591 2.165 2.165 2.165 2.165 7.087 0.413 4.567 3.228 0.394 11.417 1.575 6 16.976 33.828 0.167 0.185 0.055 0.031 0.079 0.055 0.110 0.083
  82 553.178 774.449 7500 0.591 2.165 2.165 2.165 2.165 3.940 0.413 4.567 3.228 0.394 8.268 1.575 6 15.653 31.095 0.200 0.227 0.055 0.031 0.079 0.055 0.055 0.043
  82 553.178 774.449 7500 0.591 2.165 2.165 2.165 2.165 5.512 0.413 4.567 3.228 0.394 9.843 1.575 6 16.314 32.462 0.181 0.204 0.055 0.031 0.079 0.055 0.083 0.059
  98 995.720 1290.748 6200 0.748 2.559 2.559 2.362 2.362 3.940 0.470 5.530 3.858 0.433 8.661 1.850 6 24.471 71.757 0.378 0.401 0.079 0.047 0.079 0.055 0.059 0.039
  98 995.720 1290.748 6200 0.748 2.559 2.559 2.362 2.362 7.087 0.472 5.531 3.858 0.433 11.811 1.850 6 26.455 78.591 0.319 0.335 0.079 0.047 0.079 0.055 0.110 0.079
  98 995.720 1290.748 6200 0.748 2.559 2.559 2.362 2.362 5.512 0.472 5.531 3.858 0.433 10.236 1.850 6 25.353 75.174 0.346 0.364 0.079 0.047 0.079 0.055 0.083 0.059
  118 1770.168 2212.710 5250 0.984 3.346 3.346 2.953 2.953 3.940 0.510 6.560 4.646 0.472 9.843 2.165 6 41.667 177.684 0.674 0.699 0.094 0.063 0.079 0.055 0.055 0.039
  118 1770.168 2212.710 5250 0.984 3.346 3.346 2.953 2.953 5.512 0.512 6.555 4.646 0.472 11.417 2.165 6 43.211 184.518 0.631 0.652 0.094 0.063 0.079 0.055 0.083 0.059
  118 1770.168 2212.710 5250 0.984 3.346 3.346 2.953 2.953 7.087 0.512 6.555 4.646 0.472 12.992 2.165 6 44.754 191.352 0.592 0.611 0.094 0.063 0.079 0.055 0.110 0.079
  141 2950.280 3835.364 4400 1.181 3.740 3.740 3.543 3.543 5.510 0.590 7.810 5.551 0.551 12.598 2.520 6 69.887 410.040 0.963 1.005 0.110 0.063 0.079 0.055 0.079 0.059
  141 2950.280 3835.364 4400 1.181 3.740 3.740 3.543 3.543 7.087 0.591 7.815 5.551 0.551 14.173 2.520 6 71.650 444.210 0.907 0.943 0.110 0.063 0.079 0.055 0.106 0.079
  169 4794.205 6269.345 3650 1.535 4.528 4.528 4.921 4.921 5.512 0.827 9.370 6.654 0.630 15.354 3.189 6 132.718 1161.780 1.820 2.239 0.118 0.094 0.079 0.055 0.079 0.055
  169 4794.205 6269.345 3650 1.535 4.528 4.528 4.921 4.921 7.087 0.827 9.370 6.654 0.630 16.929 3.189 6 136.246 1195.950 1.752 2.138 0.118 0.094 0.079 0.055 0.102 0.075
  169 4794.205 6269.345 3650 1.535 4.528 4.528 4.921 4.921 9.843 0.827 9.370 6.654 0.630 19.685 3.189 6 142.198 1230.120 1.646 1.981 0.118 0.094 0.079 0.055 0.150 0.106
  205 15488.970 19176.820 2950 2.323 5.512 5.512 6.299 6.299 7.900 1.100 11.600 8.071 0.866 20.472 4.409 8 263.673 3656.190 6.635 6.743 0.087 0.047 0.039 0.031 0.055 0.047
  205 15488.970 19176.820 2950 2.323 5.512 5.512 6.299 6.299 9.843 1.102 11.614 8.071 0.866 22.441 4.409 8 269.846 3758.700 6.097 6.188 0.087 0.047 0.039 0.031 0.071 0.059
  254 26552.520 32453.080 2500 3.110 6.890 6.890 7.874 7.874 8.800 1.300 13.600 10.000 1.024 24.567 5.236 8 457.460 8952.540 11.046 11.205 0.087 0.063 0.039 0.031 0.063 0.051
  254 26552.520 32453.080 2500 3.110 6.890 6.890 7.874 7.874 9.843 1.280 13.583 10.000 1.024 25.591 5.236 8 461.869 9020.880 10.550 10.693 0.087 0.063 0.039 0.031 0.071 0.059
  254 26552.520 32453.080 2500 3.110 6.890 6.890 7.874 7.874 11.811 1.280 13.583 10.000 1.024 27.559 5.236 8 470.246 9157.560 9.709 9.831 0.087 0.063 0.039 0.031 0.087 0.071
  262 54580.180 2050 3.543 7.087 7.087 8.268 8.268 11.024 1.339 16.535 10.315 1.260 27.559 5.394 8 577.391 18280.950 13.363 0.126 0.039 0.098
  316 95884.100 1700 3.937 8.465 8.465 9.449 9.449 13.780 1.850 20.079 12.441 1.496 32.677 6.772 8 992.301 49307.310 26.654 0.150 0.039 0.118

360° Product View

Tap and rotate the XR Model below and experience RINGFEDER® TND HDH in an interactive, touch-enabled 360° Product View. To access full-screen mode on your laptop or desktop device, simply double-click on the product.

Images & Drawings

Dimensions Dimensions
H-Hub Front View H-Hub Front View
H-Hub Back View H-Hub Back View
Spacer D Spacer D
Steel Disc Couplings TND: 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

EN English DE German
Tech Paper Steel Disc Couplings RINGFEDER® TND HDH

Tech Paper Steel Disc Couplings RINGFEDER® TND HDH

EN English DE German
RINGFEDER® Product Guide

RINGFEDER® Product Guide

DE German, EN English

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

Downloads

Suitable Industry Solutions

Special Machines
Chemical
Pulp & Paper
Refining
Gearboxes
Pumps
Compressors
Thermal Power Stations
Hydro Power Stations
Oil & Gas

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