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The bowed W rings are a type of retaining ring used to secure parts against movement on a shaft. The ring's inner diameter is slightly smaller than the shaft. They are installed on the shaft and fit into a groove, using their elastic properties to provide axial positioning.
The bowed W ring works by using its elasticity to compress during installation and then expand to fit into the groove. This ensures that the bearing is securely fixed on the shaft. The ring's ability to deform within a certain range helps absorb and reduce shock and vibration, protecting the mechanical system and ensuring smooth operation.
Made from spring steel, bowed W rings are designed with an inner and outer sleeve structure. This design allows for an efficient torque transmission. They are easy to install, making the maintenance and replacement quick and simple without removing the shaft or hub. They are essential for applications requiring secure connections, and the ability to withstand torque, absorb shocks, and reduce noise.
They are widely used in industries like automotive, aerospace, marine, and construction machinery. They are ideal for applications where axial position fixing, torque transmission, shock absorption, and noise reduction are needed.
Specification

|
Diameter |
d2 |
h |
d1 |
Diameter |
d2 |
h |
d1 |
||||
|
max |
min |
max |
min |
min |
max |
min |
max |
min |
min |
||
|
3 |
2.74 |
2.55 |
0.4 |
0.35 |
1 |
65 |
61.26 |
59.7 |
2.5 |
2.43 |
3 |
|
4 |
3.74 |
3.55 |
0.4 |
0.35 |
1 |
68 |
63.96 |
62.4 |
2.5 |
2.43 |
3 |
|
5 |
4.74 |
4.55 |
0.6 |
0.55 |
1 |
70 |
65.96 |
64.4 |
2.5 |
2.43 |
3 |
|
6 |
5.64 |
5.45 |
0.7 |
0.65 |
1.2 |
72 |
67.5 |
+0.46 |
2.5 |
0 |
3 |
|
7 |
6.56 |
6.32 |
0.8 |
0.75 |
1.2 |
75 |
70.5 |
||||
|
8 |
7.46 |
7.22 |
0.8 |
0.75 |
1.2 |
78 |
73.5 |
||||
|
9 |
8.46 |
8.22 |
1 |
0.94 |
1.2 |
80 |
74.5 |
||||
|
10 |
9.4 |
8.94 |
1 |
0.94 |
1.5 |
82 |
76.5 |
||||
|
11 |
10.3 |
9.84 |
1 |
0.94 |
1.5 |
85 |
79.5 |
3 |
0 |
3.5 |
|
|
12 |
11.1 |
10.64 |
1 |
0.94 |
1.7 |
88 |
82.5 |
+0.54 |
|||
|
13 |
12.1 |
11.54 |
1 |
0.94 |
1.7 |
90 |
84.5 |
||||
|
14 |
13 |
12.54 |
1 |
0.94 |
1.7 |
95 |
83.5 |
||||
|
15 |
13.9 |
13.44 |
1 |
0.94 |
1.7 |
100 |
94.5 |
||||
|
16 |
14.8 |
14.34 |
1 |
0.94 |
1.7 |
105 |
98 |
4 |
0 |
||
|
17 |
15.8 |
15.34 |
1 |
0.94 |
1.7 |
110 |
103 |
||||
|
18 |
16.6 |
16.14 |
1.2 |
1.14 |
2 |
115 |
108 |
||||
|
19 |
17.6 |
17.14 |
1.2 |
1.14 |
2 |
120 |
113 |
||||
|
20 |
18.63 |
18.08 |
1.2 |
1.14 |
2 |
125 |
118 |
4 |
|||
|
21 |
19.63 |
19.08 |
1.2 |
1.14 |
2 |
130 |
123 |
+0.63 |
|||
|
22 |
20.63 |
20.08 |
1.2 |
1.14 |
2 |
135 |
128 |
||||
|
24 |
22.41 |
21.78 |
1.2 |
1.14 |
2 |
140 |
133 |
||||
|
25 |
23.41 |
22.73 |
1.2 |
1.14 |
2 |
145 |
138 |
||||
|
26 |
24.41 |
23.78 |
1.2 |
1.14 |
2 |
150 |
142 |
||||
|
28 |
26.11 |
25.48 |
1.5 |
1.44 |
2 |
155 |
146 |
||||
|
29 |
27.11 |
26.48 |
1.5 |
1.44 |
2 |
160 |
151 |
||||
|
30 |
28.11 |
27.48 |
1.5 |
1.44 |
2 |
165 |
155.5 |
||||
|
32 |
29.81 |
29.18 |
1.5 |
1.44 |
2.5 |
170 |
160.5 |
||||
|
34 |
31.75 |
31 |
1.5 |
1.44 |
2.5 |
175 |
165.5 |
||||
|
35 |
32.45 |
31.7 |
1.5 |
1.44 |
2.5 |
180 |
170.5 |
||||
|
36 |
33.45 |
32.7 |
1.75 |
1.69 |
2.5 |
185 |
175.5 |
||||
|
38 |
35.45 |
34.7 |
1.75 |
1.69 |
2.5 |
190 |
180.5 |
+0.72 |
|||
|
40 |
36.89 |
35.6 |
1.75 |
1.69 |
2.5 |
195 |
185.5 |
||||
|
42 |
38.89 |
37.6 |
1.75 |
1.69 |
2.5 |
200 |
190.5 |
||||
|
45 |
41.89 |
40.6 |
1.75 |
1.69 |
2.5 |
210 |
198 |
5 |
0 |
||
|
48 |
44.89 |
43.6 |
1.75 |
1.69 |
2.5 |
220 |
208 |
||||
|
50 |
46.19 |
44.9 |
2 |
1.93 |
2.5 |
230 |
218 |
||||
|
52 |
48.19 |
46.9 |
2 |
1.93 |
2.5 |
240 |
228 |
||||
|
55 |
51.26 |
49.7 |
2 |
1.93 |
2.5 |
250 |
238 |
||||
|
56 |
52.26 |
50.7 |
2 |
1.93 |
2.5 |
260 |
245 |
5 |
|||
|
58 |
54.26 |
52.7 |
2 |
1.93 |
2.5 |
270 |
255 |
+0.81 |
|||
|
60 |
56.26 |
54.7 |
2 |
1.93 |
2.5 |
280 |
265 |
||||
|
62 |
58.26 |
56.7 |
2 |
1.93 |
2.5 |
290 |
275 |
||||
|
63 |
59.26 |
57.7 |
2 |
1.93 |
2.5 |
300 |
285 |
||||
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Surface Treatment
Offer a variety of surface treatments for our screws to meet different needs and environmental conditions. Such as zinc plating, nickel plating, hot-dip galvanizing, anodizing, zinc nickel alloy, dacromet coating, phosphating, etc.

Custom Service
With 18 years of experience in the fasteners area, Zeyao Hardware specializes in manufacturing custom fasteners, including screws, bolts, nuts, rivets, standoffs, spacers, wrenches, pins, and more. Welcome to send your inquiries to get a free quote.

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