Nuts and locking devices

Nuts and locking devices

Information

Locknuts are used to install, remove and secure bearings and other machine parts. Depending on how they are used, locknuts are referred to as mounting nuts, shaft nuts or removal nuts. So-called hook spanners or impact spanners are generally used for securing or releasing purposes. Bearings are pressed onto the taper of a shaft or adapter sleeve using locknuts. The adapter sleeve can also be pulled into the tapered bearing bore. Shaft nuts are used to insert withdrawal sleeves into the tapered bearing bore. Withdrawal sleeves are dismounted by screwing a removal nut onto the sleeve thread and rotating it against the inner ring of the bearing until it slides out from the bearing. Nuts (except removal nuts) are used to secure the bearing on the taper. These in turn are secured with locking devices (MB, MBL, or MS) to prevent them from coming loose.

Locknut product codes

The product codes for locknuts start with HM or KM.

Locknuts of types KM, KML or HM, HML, and HMLL have four grooves on their outer diameter. By contrast, the HM 30.. and HM 31.. ranges have eight grooves on their outer diameter and eight thread bores for securing a locking clip.

Suffixes

Different suffixes (letters) distinguish the various locknuts within the ranges. A distinction is made between H and HS designs.

H = Locknuts with the suffix H have additional thread bores right through them. This makes it possible to mount them with additional screws.
HS = Locknuts with the suffix HS have additional thread bores right through them and come with the relevant mounting screws.

Type MB.. H mounting washers are used during mounting/dismounting with mounting screws. These mounting washers prevent the mounting screws from damaging the bearing's inner ring or the sleeve.

Open configuration options

Use of locking devices

Lock washers from the MB and MBL ranges are used to secure type KM, KML, and HM.. T locknuts. Locking clips from the MS 30.. and MS 31.. ranges are used to secure type HM 30.. and HM 31.. locknuts.

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Bezeichnung G l (mm) D (mm)
KM 0 M 10x0,75 4 18
KM 1 M 12x1 4 22
KM 10 M 50x1,5 11 70
KM 11 M 55x2 11 75
KM 12 M 60x2 11 80
KM 13 M 65x2 12 85
KM 14 M 70x2 12 92
KM 15 M 75x2 13 98
KM 16 M 80x2 16 105
KM 17 M 85x2 16 110
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Bezeichnung G l (mm) D (mm)
HM 102 T Tr 510x6 58 620
HM 102 TH Tr 510x6 58 620
HM 102 THS Tr 510x6 58 620
HM 106 T Tr 530x6 60 640
HM 106 TH Tr 530x6 60 640
HM 106 THS Tr 530x6 60 640
HM 110 T Tr 550x6 63 670
HM 110 TH Tr 550x6 63 670
HM 110 THS Tr 550x6 63 670
HM 116 T Tr 580x6 65 700
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Bezeichnung G (Zoll) l (Zoll) D (Zoll)
AN-15 2.933 0.604 3.88
AN-16 3.137 0.604 4.161
AN-17 3.34 0.635 4.411
AN-18 3.527 0.698 4.661
AN-19 3.73 0.729 4.943
AN-20 3.918 0.76 5.193
AN-21 4.122 0.76 5.443
AN-22 4.325 0.791 5.724
AN-24 4.716 0.823 6.13
AN-26 5.106 0.885 6.755
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Bezeichnung b (mm) h (mm) e (mm)
MS 30/1000 60 21 51
MS 30/1060 60 21 51
MS 30/1120 60 21 51
MS 30/1180 60 21 51
MS 30/1250 60 21 51
MS 30/1320 60 21 51
MS 30/1400 60 21 51
MS 30/1500 60 21 56
MS 30/530 40 21 34
MS 30/560 40 21 29
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Bezeichnung d3 (mm) f (mm) d1 (mm)
MB 1 25 10.5 12
MB 10 74 47.5 50
MB 11 81 52.5 55
MB 12 86 57.5 60
MB 13 92 62.5 65
MB 14 98 66.5 70
MB 15 104 71.5 75
MB 16 112 76.5 80
MB 17 119 81.5 85
MB 18 126 86.5 90
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Bezeichnung d3 (mm) f (mm) d1 (mm)
MB 1 A 25 10.5 12
MB 10 A 74 47.5 50
MB 11 A 81 52.5 55
MB 12 A 86 57.5 60
MB 13 A 92 62.5 65
MB 14 A 98 66.5 70
MB 15 A 104 71.5 75
MB 16 A 112 76.5 80
MB 17 A 119 81.5 85
MB 18 A 126 86.5 90
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Bezeichnung d3 (Zoll) f (Zoll) d1 (Zoll)
W-00 0.875 0.334 0.406
W-01 1.016 0.412 0.484
W-02 1.156 0.529 0.601
W-022 5.688 4.185 4.395
W-024 6.188 4.591 4.801
W-026 6.625 4.961 5.191
W-028 7.094 5.352 5.582
W-03 1.328 0.607 0.679
W-030 7.719 5.722 5.983
W-032 8.156 6.128 6.389
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Bezeichnung d1 d2 (mm) s (mm)
MB /500 H 502 584 2.5
MB 30 H 152 183 2
MB 32 H 162 197 2
MB 34 H 172 205 2
MB 36 H 182 215 2
MB 38 H 192 225 2
MB 40 H 202 234 2.5
MB 44 H 222 268 2.5
MB 48 H 242 285 2.5
MB 52 H 262 305 2.5