
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS Page 113 of 124
Dynaflex LCD Series Couplings
Table 2 – Rated Performance Characteristics
Part Number*  | Figure  | Capacity per  | Torque Rating  | Approximate  | Torsional Rate  | Axial Rate  | Radial Rate  | ||||||||
100 rpm  | TN  | 
  | Slip Torque  | Kθ  | 
  | KA  | KR  | 
  | |||||||
  | 
  | No.  | 
  | 
  | 
  | ||||||||||
Size  | Variation  | 
  | hp  | kW  | 
 | 
 | 
 | lb/in | N/mm  | lb/in  | 
  | N/mm  | |||
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4  | 4.05  | 3.02  | 2,500  | 282  | 8,000  | 900  | 11,000  | 1,243  | 875  | 153  | 5,800  | 
  | 1,015  | ||
  | 4  | 
  | |||||||||||||
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4  | 4.05  | 3.02  | 2,500  | 282  | 8,000  | 900  | 21,000  | 2,373  | 2,100  | 368  | 10,000  | 
  | 1,750  | ||
  | 4  | 
  | |||||||||||||
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  | ||
7  | 4.05  | 3.02  | 2,500  | 282  | 8,000  | 900  | 21,000  | 2,373  | 2,100  | 368  | 10,000  | 
  | 1,750  | ||
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4  | 8.09  | 6.04  | 5,000  | 565  | 20,000  | 2,260  | 22,000  | 2,486  | 1,750  | 306  | 11,500  | 
  | 2,012  | ||
  | 5  | 
  | |||||||||||||
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4  | 8.09  | 6.04  | 5,000  | 565  | 20,000  | 2,260  | 40,000  | 4,520  | 4,000  | 700  | 20,000  | 
  | 3,500  | ||
  | 5  | 
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4  | 11.11  | 8.29  | 7,000  | 791  | 28,000  | 3,164  | 35,000  | 3,955  | 2,600  | 455  | 14,000  | 
  | 2,450  | ||
  | 5  | 
  | |||||||||||||
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4  | 11.11  | 8.29  | 7,000  | 791  | 28,000  | 3,164  | 60,000  | 6,780  | 5,000  | 875  | 22,000  | 
  | 3,850  | ||
  | 5  | 
  | |||||||||||||
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4  | 15.87  | 11.84  | 10.000  | 1,130  | 40,000  | 4,520  | 50,000  | 5,650  | 3,500  | 612  | 11,500  | 
  | 2,012  | ||
  | 5  | 
  | |||||||||||||
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4  | 15.87  | 11.84  | 10,000  | 1,130  | 40,000  | 4,520  | 90,000  | 10,170  | 8,800  | 1,540  | 20,000  | 
  | 3,500  | ||
  | 5  | 
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6  | 19.83  | 14.79  | 12,500  | 1,412  | 60,000  | 6,780  | 60,000  | 6,780  | 1,750  | 306  | 12,500  | 
  | 2,188  | ||
  | 6  | 
  | |||||||||||||
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6  | 19.83  | 14.79  | 12,500  | 1,412  | 60,000  | 6,780  | 110,000  | 12,430  | 5,700  | 1,000  | 25,000  | 
  | 4,375  | ||
  | 
 | 6  | 
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6  | 31.75  | 23.69  | 20,000  | 2,260  | 85,000  | 9,600  | 100,000  | 11,290  | 1,600  | 280  | 12,500  | 
  | 2,188  | ||
  | 6  | 
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6  | 39.67  | 29.58  | 25,000  | 2,825  | 100,000  | 11,300  | 130,000  | 14,690  | 2,000  | 350  | 14,000  | 
  | 2,450  | ||
  | 6  | 250,000  | 28,250  | 6.500  | 1,140  | 30,000  | 
  | 5,250  | |||||||
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6  | 52.91  | 39.47  | 32,000  | 3,616  | 150,000  | 16,950  | 250,000  | 28,250  | 3,250  | 600  | 20,000  | 
  | 3,500  | ||
  | 6  | 450,000  | 50,850  | 9,000  | 1,575  | 35,000  | 
  | 6,125  | |||||||
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6  | 79.37  | 59.21  | 50,000  | 5,650  | 200,000  | 22,600  | 360,000  | 40,680  | 4,500  | 788  | 28,000  | 
  | 4,900  | ||
  | 6  | 650,000  | 73,450  | 13,000  | 2,275  | 50,000  | 
  | 8,750  | |||||||
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6  | 103.15  | 77.22  | 65,000  | 7,345  | 200,000  | 22,600  | 675,000  | 76,275  | 8,500  | 1,488  | 58,000  | 
  | 10,150  | ||
  | 6  | 1,250,000  | 141,250  | 15,000  | 2,625  | 100,000  | 
  | 17,500  | |||||||
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*Please consult LORD engineering for application review, approval and availability.
Prolonged exposure to temperatures in the 0°F range and below produces a signifi cantly reduced slip torque prior to driveline 
Blind assembly style with a notched periphery provides 
Use Wood’s 
See detail drawings by part number for tolerances.
Pilot diameter tolerances are + .000/ 
Tapered.
Refer to SAE J620c for fl ywheel numbers 
Unless otherwise noted:
.xx dim ± 0.030 in (± 0.762 mm)
.xxx dim ± 0.015 in (± 0.381 mm)
It is advisable to refer to drawing of coupling before ordering since it is not practical to show all details in this catalog.
Definition of Part Numbering System
  | 
  | Attachment  | Torsional  | |
Part Type  | hp Rating  | Stiffness  | ||
Variation  | ||||
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  | Variation  | ||
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LCD  | ||||
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Torque Requirements:
Torque 
A part’s listing in this catalog does not guarantee its availability.  | 
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To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf.  | Rev.1 10/08  |