NIKKI PRECISION LOCKNUT
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Best Flank Angle Locking Series
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Radial Locking Series
SR Locknuts
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SR Precision Locknut - Radial Locking
The series locknut is designed for special area in where space is limited.
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 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
Screw
Screw Torque
D
h
g
t
d
DIN
MAX kg-cm
SR8X0.75P
16
8
3
2
11
M4
22
SR10X0.75P
18
13
SR12X1.0P
22
18
SR15X1.0P
25
21
SR17X1.0P
28
10
4
23
M5
48
SR20X1.0P
32
27
SR20X1.5P
SR25X1.5P
38
12
5
33
M6
80
SR30X1.5P
45
40
SR35X1.5P
52
47
SR40X1.5P
58
14
6
2.5
52
SR45X1.5P
65
59
SR50X1.5P
70
64
SR55X2.0P
75
16
7
3
68
SR60X2.0P
80
73
SR65X2.0P
85
78
SR70X2.0P
92
18
8
3.5
85
M8
190
SR75X2.0P
98
90
SR80X2.0P
105
95
SR85X2.0P
110
102
SR90X2.0P
120
20
10
4
108
SR95X2.0P
125
113
SR100X2.0P
130
120
SR105X2.0P
140
22
12
5
126
M10
360
SR110X2.0P
145
133
SR115X2.0P
150
137
SR120X2.0P
155
24
138
SR125X2.0P
160
148
SR130X2.0P
165
149
SR135X2.0P
175
26
14
6
160
M12
600
SR140X2.0P
180
SR145X2.0P
190
172
SR150X2.0P
195
171
SR155X3.0P
200
28
16
7
182
SR160X3.0P
210
SR165X3.0P
210
193
SR170X3.0P
220
SR180X3.0P
230
30
18
8
203
SR190X3.0P
240
214
SR200X3.0P
250
32
226
Remark
‧When ordering above products, please refer to the TYPE & Pitch.
‧To prevent above locknuts are in short supply, please send your order in advance.
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