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: 1,500-8,400 1/min
  • Torque TKN: 170-130,000 Nm (125.36-95,833.07 ft·lb)

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 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 HDH.

 

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
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 8400 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 8400 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 8400 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 6800 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 6800 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 6800 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 6800 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 5400 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 5400 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 5400 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 4600 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 4600 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 4600 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 3800 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 3800 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
118 2400 3000 3800 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
141 4000 5200 3400 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 3400 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 3000 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 3000 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 3000 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 2500 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 2500 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 2100 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 2100 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 2100 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 1800 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 1500 100 215 215 240 240 350 47 510 316 38 830 172 8 450,1 14430 36,134 3,8 1 3
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 HDH

Tech Paper Steel Disc Couplings RINGFEDER® TND HDH

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