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Locking Element RfN 8006 slit

The slit versions are useful in applications requiring the bridging of bigger tolerances and/or higher torques. Stacking of the elements is not recommended.

RINGFEDER® RfN 8006 slit

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metric inch
CAD d D L L3 FA T100 Fax100 Tmax
  mm mm mm mm kN Nm N Nm
  6 9 4.5 3.7 3.7 2.5 830 7.8
  7 10 4.5 3.7 4.4 3.4 970 10
  8 11 4.5 3.7 5 4.4 1100 13
  9 12 4.5 3.7 5.7 5.7 1270 8.7
  10 13 4.5 3.7 6.3 7 1400 12
  11 14 4.5 3.7 6.9 8 1500 15
  12 15 4.5 3.7 7.5 10 1670 19
  13 16 4.5 3.7 8.2 12 1810 23
  14 18 6.3 5.3 12.6 20 2800 34
  15 19 6.3 5.3 13.5 23 3000 41
  16 20 6.3 5.3 14.4 26 3190 48
  17 21 6.3 5.3 15.3 29 3400 56
  18 22 6.3 5.3 16.2 33 3600 65
  19 24 6.3 5.3 17.1 36 3790 91
  20 25 6.3 5.3 18 40 4000 103
  22 26 6.3 5.3 19.8 48 4400 100
  24 28 6.3 5.3 21.6 58 4800 122
  25 30 6.3 5.3 22.5 62 5000 171
  28 32 6.3 5.3 25.2 78 5600 171
  30 35 6.3 5.3 27 90 6000 252
  32 36 6.3 5.3 28.8 102 6400 223
  35 40 7 6 35.6 138 7900 339
  36 42 7 6 36.6 147 8200 439
  38 44 7 6 38.7 163 8600 492
  40 45 8 6.6 45 199 9950 428
  42 48 8 6.6 47 219 10400 580
  45 52 10 8.6 66 328 14600 750
  48 55 10 8.6 70 373 15600 865
  50 57 10 8.6 73 405 16200 948
  55 62 10 8.6 80 490 17800 1160
  56 64 12 10.4 99 615 22000 1370
  60 68 12 10.4 106 705 23500 1590
  63 71 12 10.4 111 780 24800 1760
  65 73 12 10.4 115 830 25600 1880
  70 79 14 12.2 145 1120 32000 2460
  71 80 14 12.2 147 1160 32600 2530
  75 84 14 12.2 155 1290 34400 2800
  80 91 17 15 203 1810 45000 3910
  85 96 17 15 216 2040 48000 4440
  90 101 17 15 229 2290 51000 5010
  95 106 17 15 242 2550 54000 5610
  100 114 21 18.7 317 3520 70000 7950
  110 124 21 18.7 349 4250 77000 9570
  120 134 21 18.7 380 5050 84000 11500
  130 148 28 25.3 558 8050 124000 17300
  140 158 28 25.3 600 9350 134000 20200
  150 168 28 25.3 643 10700 143000 23300
  160 178 28 25.3 686 12200 152500 26600
  170 191 33 30 865 16300 192000 34900
  180 201 33 30 916 18300 204000 39200
  190 211 33 30 966 20400 214000 43900
  200 224 38 34.8 1180 26200 262000 55600
  210 234 38 34.8 1239 28900 275000 61500
  220 244 38 34.8 1298 31700 288000 67400
  230 257 43 39.5 1540 39400 342000 82900
  240 267 43 39.5 1610 43000 358000 90400
  250 280 48 44 1870 52000 415000 109000
  260 290 48 44 1950 56500 435000 118300
  270 300 48 44 2030 61000 450000 128000
  280 313 53 49 2330 72500 520000 151000
  290 323 53 49 2410 77500 535000 162000
  300 333 53 49 2490 83000 555000 173000
  320 360 65 59 3200 114000 710000 240000
  340 380 65 59 3400 128500 755000 272000
  360 400 65 59 3600 144000 800000 305000
  380 420 65 59 3800 160500 845000 339000
  400 440 65 59 4000 178000 890000 376000
  420 460 65 59 4200 196000 935000 414000
  440 480 65 59 4400 215000 980000 455000
  460 500 65 59 5000 256000 1111000 497000
  480 520 65 59 5000 344000 1433000 497000
  500 540 65 59 5000 278000 1111000 586000
  520 570 80 73 6450 373000 1433000 586000
  540 590 80 73 6700 402000 7026000 859000
  560 610 80 73 6950 432000 1544000 924000
  580 630 80 73 7200 464000 1600000 991000
  600 650 80 73 7450 497000 1656000 1058000
  620 670 80 73 7700 530000 1711000 1130000
  640 690 80 73 7950 565000 1767000 1203000
  660 710 80 73 8200 601000 1822000 1279000
  680 730 80 73 8450 638000 1878000 1358000
  700 750 80 73 8700 677000 1933000 1440000
  720 770 80 73 8950 716000 1989000 1522000
  740 790 80 73 9200 756000 2044000 1608000
  760 810 80 73 9450 798000 2100000 1693000
  780 830 80 73 9700 841000 2155000 1783000
  800 850 80 73 9900 880000 2199000 1876000
  820 870 80 73 10150 925000 2255000 1970000
  840 890 80 73 10400 971000 2311050 2067000
  860 910 80 73 10650 1018000 2367000 2167000
  880 930 80 73 10900 1066000 2422000 2268000
  900 950 80 73 11150 1115000 2478000 2372000
  920 970 80 73 11400 1165000 2533000 2478000
  940 990 80 73 11650 1217000 2589000 2587000
  960 1010 80 73 11900 1269000 2644000 2694000
  980 1030 80 73 12150 1323000 2699000 2807000
  1000 1050 80 73 12400 1378000 2755000 2923000
CAD d D L L3 FA T100 Fax100 Tmax
  inch inch inch inch lbs ft-lbs lbs ft-lbs
  0.236 0.354 0.177 0.146 832 1.8 187 5.8
  0.276 0.394 0.177 0.146 989 2.5 218 7.6
  0.315 0.433 0.177 0.146 1124 3.2 247 9.7
  0.354 0.472 0.177 0.146 1281 4.2 286 6.4
  0.394 0.512 0.177 0.146 1416 5.2 315 8.9
  0.433 0.551 0.177 0.146 1551 5.9 337 10.8
  0.472 0.591 0.177 0.146 1686 7.4 375 13.8
  0.512 0.630 0.177 0.146 1844 8.9 407 17.2
  0.551 0.709 0.248 0.209 2833 14.8 629 25
  0.591 0.748 0.248 0.209 3035 17.0 674 30
  0.630 0.787 0.248 0.209 3237 19.2 717 36
  0.669 0.827 0.248 0.209 3440 21.4 764 42
  0.709 0.866 0.248 0.209 3642 24 809 48
  0.748 0.945 0.248 0.209 3844 27 852 67
  0.787 0.984 0.248 0.209 4047 30 899 76
  0.866 1.024 0.248 0.209 4451 35 989 73
  0.945 1.102 0.248 0.209 4856 43 1079 90
  0.984 1.181 0.248 0.209 5058 46 1124 126
  1.102 1.260 0.248 0.209 5665 58 1259 126
  1.181 1.378 0.248 0.209 6070 66 1349 186
  1.260 1.417 0.248 0.209 6475 75 1439 164
  1.378 1.575 0.276 0.236 8004 102 1776 250
  1.417 1.654 0.276 0.236 8228 108 1844 324
  1.496 1.732 0.276 0.236 8701 120 1933 363
  1.575 1.772 0.315 0.260 10117 147 2237 316
  1.654 1.890 0.315 0.260 10567 162 2338 428
  1.772 2.047 0.394 0.339 14838 242 3282 553
  1.890 2.165 0.394 0.339 15737 275 3507 638
  1.969 2.244 0.394 0.339 16412 299 3642 699
  2.165 2.441 0.394 0.339 17986 361 4002 859
  2.205 2.520 0.472 0.409 22257 454 4946 1007
  2.362 2.677 0.472 0.409 23831 520 5283 1170
  2.480 2.795 0.472 0.409 24955 575 5576 1299
  2.559 2.874 0.472 0.409 25854 612 5755 1389
  2.756 3.110 0.551 0.480 32599 826 7194 1816
  2.795 3.150 0.551 0.480 33049 856 7329 1869
  2.953 3.307 0.551 0.480 34847 952 7734 2067
  3.150 3.583 0.669 0.591 45638 1335 10117 2882
  3.346 3.780 0.669 0.591 48561 1505 10791 3277
  3.543 3.976 0.669 0.591 51484 1689 11466 3696
  3.740 4.173 0.669 0.591 54406 1881 12140 4141
  3.937 4.488 0.827 0.736 71268 2596 15737 5866
  4.331 4.882 0.827 0.736 78462 3135 17311 7060
  4.724 5.276 0.827 0.736 85432 3725 18885 8472
  5.118 5.827 1.102 0.996 125450 5938 27878 12794
  5.512 6.220 1.102 0.996 134892 6897 30126 14930
  5.906 6.614 1.102 0.996 144559 7893 32149 17199
  6.299 7.008 1.102 0.996 154227 8999 34285 19648
  6.693 7.520 1.299 1.181 194469 12023 43165 25739
  7.087 7.913 1.299 1.181 205935 13499 45863 28951
  7.480 8.307 1.299 1.181 217176 15048 48112 32352
  7.874 8.819 1.496 1.370 265288 19326 58903 41035
  8.268 9.213 1.496 1.370 278552 21318 61826 45348
  8.661 9.606 1.496 1.370 291817 23383 64748 49751
  9.055 10.118 1.693 1.555 346223 29063 76888 61131
  9.449 10.512 1.693 1.555 361960 31718 80486 66689
  9.843 11.024 1.890 1.732 420414 38357 93300 80543
  10.236 11.417 1.890 1.732 438399 41676 97797 87249
  10.630 11.811 1.890 1.732 456385 44996 101169 94157
  11.024 12.323 2.087 1.929 523831 53479 116906 111663
  11.417 12.717 2.087 1.929 541817 57167 120279 119337
  11.811 13.110 2.087 1.929 559802 61224 124775 127854
  12.598 14.173 2.559 2.323 719424 84090 159622 177231
  13.386 14.961 2.559 2.323 764388 94786 169739 200420
  14.173 15.748 2.559 2.323 809353 106219 179856 224858
  14.961 16.535 2.559 2.323 854317 118390 189973 249923
  15.748 17.323 2.559 2.323 899281 131299 200090 277097
  16.535 18.110 2.559 2.323 944245 144576 210207 305640
  17.323 18.898 2.559 2.323 989209 158592 220324 335509

Characteristics

  • Customized application – by varying the number of Locking Elements, size and quantity of clamping screws, the connection can be adapted to fit most applications concerning surface pressures, materials, hub/shaft dimensions and available mounting space.
  • Transmission of high loads – to increase the transmissible torque and axial forces up to 4 Locking Elements can be used in series.
  • Maximum reliability – no matter whether the connection is subjected to static, pulsating, dynamic or intermittent loads.
  • Simple manufacture – shaft and hub are designed without keyway. Apart from this, relatively large tolerances are admissible.
  • Easy adjustability – Locking Elements work without positive connection. So they can be adjusted at any place to any position by following the simple installation and removal instructions.
  • Backlash-free – the Locking Element connection is a mechanical shrink fit and will not wear or loosen in service provided that the maximum transmissible values for the connection are not exceeded.
  • High fatigue strength under alternating torsional stresses – as neither the shaft nor the hub have grooves the notch effect is minimized and a higher polar section modulus is given, enabling the use of smaller diameters.
  • Simple installation – in comparison to cross-press fits temperature treatments and fitting are eliminated. Screws have to be tightened with standard tools.
  • Easy removal – Locking Elements are self releasing no additional measures or auxiliary equipment is required.
  • Wear and maintenance-free – unlimited lifetime if designed and used correctly.

Mounting of Locking Element

The values for T and Fax, apply to Locking Elements installed in oiled condition.

Surface finishes

For shafts and hub bores Ra ≤ 1 μm

Required screw tension force

  • for Locking Elements solid: FA = F + F0
  • for Locking Elements slit: FA = F

n-Locking Elements

Where n-Locking Elements are used one behind the other (series), the following applies to the increase in T und Fax:

  • Tn = T1 · m
  • Faxn = Fax1 · m

Retaining the values for T and Fax it is possible to reduce F and p when using elements in series:

  • FA´n = F/m
  • PN = p/m

With 2 / 3 / 4 Locking Elements, m = 1.555 / 1.86 / 2.03

d

Element1)

Shaft

Bore

up to

38

2)E7 3)f7

h6

H7

above

38

2)E8 3)e8

h8

H8



1Approx. values, 2Inner diameter, 3Outside diameter

The fits specified have given excellent service in practical operations. Naturally, the shafts and the bores can feature other clearances. (Please contact our technical department for assistance.)

Recommended Applications

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