NIKKI PRECISION LOCKNUT
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Best Flank Angle Locking Series
30˚ Flank Locking Series
Radial Locking Series
MR Locknuts
SR Locknuts
MRRA Locknuts
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SRZ Locknuts
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MRS Stainless Steel Locknuts
Axial Locking Series
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Product
Radial Locking Series
MR Locknuts
Categories list
MR Precision Locknut - Radial Locking
The locknut setscrews intersect at a 90° angle which drives the locking brass to stick perfectly on the shaft’s thread flank.
No thrust washer or keyway needed.
Easy to assemble and disassemble.
Can be re-used if handled properly.
The series locknut is designed for special area in where space is limited.
The connecting face and thread area are all produced by high precision grinding process.
‧Material:JIS SCM440/DIN42CrMo4/AISI 4140
‧Hardness:HRC 28-32
‧Precision:ISO 4H
‧The maximum runout between locating face and thread is 0.002 mm
NIKKI Product Spec
TYPE & Pitch
Dimensions
Axial Load Static
kN
Loosening Torque
kg-cm
Screw
Screw Torque
D
h
g
t
d
DIN
MAX kg-cm
MR6X0.5P
16
8
3
2
11
7.8
110
M4
22
MR8X0.75P
10.2
150
MR10X0.75P
18
13
11
180
MR12X1.0P
24
19
20
190
MR15X1.0P
28
23
30
220
MR17X1.0P
32
10
4
2
27
40
280
M5
48
MR20X1.0P
35
30
50
300
MR20X1.5P
50
300
MR25X1.5P
42
12
5
2
36
75
550
M6
80
MR30X1.5P
48
43
90
750
MR35X1.5P
53
48
110
900
MR40X1.5P
58
14
6
2.5
52
130
1200
MR45X1.5P
65
59
150
1300
MR50X1.5P
70
64
175
1500
MR55X2.0P
75
16
7
3
68
225
1700
M8
190
MR60X2.0P
80
73
250
2000
MR65X2.0P
85
78
290
2200
MR70X2.0P
92
18
8
3.5
84
340
2400
MR75X2.0P
98
90
360
2600
MR80X2.0P
105
96
430
2800
MR85X2.0P
112
104
460
3000
MR90X2.0P
118
20
10
4
108
520
3200
MR100X2.0P
128
118
570
3600
MR110X2.0P
145
24
12
5
132
640
4000
MR120X2.0P
155
142
680
4500
MR130X2.0P
165
152
730
5000
MR140X2.0P
180
26
165
800
5500
M10
360
MR150X2.0P
195
180
850
6000
MR160X3.0P
210
28
190
980
6500
MR170X3.0P
220
200
1030
7000
MR180X3.0P
230
30
210
1140
7500
MR190X3.0P
240
220
1200
8000
MR200X3.0P
250
230
1250
8500
Remark
‧When ordering above products, please refer to the TYPE & Pitch.
‧If left hand thread required, please notify “L” after the TYPE & Pitch.
For example: MR25X1.5P-L
‧If inch thread required, please refer to the TYPE & Pitch.
For example: MR25-U20
‧To prevent the locknuts are in short supply, please send your order in advance.
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