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THK821型 活塞用超高压组合密封
一、标准材料
J型密封环：填充PTFE，T101；
O型圈：丁腈橡胶、三元乙丙或氟橡胶。
二、概述
THK821型活塞用超高压组合密封由一个填充聚四氟乙烯（PTFE）材料的J形密封环和一个GB3452.1 “O”形橡胶圈组合而成。适用于超高压往复运动活塞密封及静密封，起单向作用。推荐用于超高压液压元件中，如水压试验机、增压缸、超高压泵站等
三、特点
*良好的密封性能
*较小的摩擦阻力，无爬行现象
*可多组串联使用
*使用寿命长
*耐超高压
四、工况条件
|
直径范围mm |
速 度 m/s |
压 力MPa |
温 度 ℃ |
介 质 |
|
14~1500 |
≤8 |
0~200 |
-50~+250（取决于O形圈材质） |
液压油、气、水、乳化液等 |
五、订货示例
例：缸径D=Φ80mm
订货号 THK821—80
六、沟槽尺寸
|
缸 径
D H9 |
沟槽底径
d f8 |
沟槽宽度
L+0.2 |
O形圈截面直径d2 |
倒 角
Z≥ |
|
14~25.9 |
D-5.6 |
5.8 |
2.65 |
2 |
|
26~49.9 |
D-7.1 |
6.8 |
3.55 |
3 |
|
50~121.9 |
D-10.8 |
9.6 |
5.30 |
5 |
|
122~1500 |
D-14.3 |
12.4 |
7.00 |
7 |
七、规格表
|
缸 径
D H9 |
沟槽直径
d f8 |
沟槽宽度 L+0.2 |
订货号 |
|
缸 径
D H9 |
沟槽直径
d f8 |
沟槽宽度 L+0.2 |
订货号 |
|
14 |
8.4 |
5.6 |
THK821-14 |
140 |
125.7 |
12.4 |
THK821-140 |
|
15 |
9.4 |
5.6 |
THK821-15 |
150 |
135.7 |
12.4 |
THK821-150 |
|
16 |
10.4 |
5.6 |
THK821-16 |
160 |
145.7 |
12.4 |
THK821-160 |
|
18 |
12.4 |
5.6 |
THK821-18 |
170 |
155.7 |
12.4 |
THK821-170 |
|
20 |
14.4 |
5.6 |
THK821-20 |
180 |
165.7 |
12.4 |
THK821-180 |
|
22 |
16.4 |
5.6 |
THK821-22 |
190 |
175.7 |
12.4 |
THK821-190 |
|
24 |
18.4 |
5.6 |
THK821-24 |
200 |
185.7 |
12.4 |
THK821-200 |
|
25 |
19.4 |
5.6 |
THK821-25 |
210 |
195.7 |
12.4 |
THK821-210 |
|
28 |
20.9 |
6.8 |
THK821-28 |
220 |
205.7 |
12.4 |
THK821-220 |
|
30 |
22.9 |
6.8 |
THK821-30 |
230 |
215.7 |
12.4 |
THK821-230 |
|
32 |
24.9 |
6.8 |
THK821-32 |
240 |
225.7 |
12.4 |
THK821-240 |
|
35 |
27.9 |
6.8 |
THK821-35 |
250 |
235.7 |
12.4 |
THK821-250 |
|
36 |
28.9 |
6.8 |
THK821-36 |
260 |
245.7 |
12.4 |
THK821-260 |
|
38 |
30.9 |
6.8 |
THK821-38 |
270 |
255.7 |
12.4 |
THK821-270 |
|
40 |
32.9 |
6.8 |
THK821-40 |
280 |
265.7 |
12.4 |
THK821-280 |
|
42 |
34.9 |
6.8 |
THK821-42 |
290 |
275.7 |
12.4 |
THK821-290 |
|
45 |
37.9 |
6.8 |
THK821-45 |
300 |
285.7 |
12.4 |
THK821-300 |
|
48 |
40.9 |
6.8 |
THK821-48 |
310 |
295.7 |
12.4 |
THK821-310 |
|
50 |
39.2 |
9.6 |
THK821-50 |
320 |
305.7 |
12.4 |
THK821-320 |
|
55 |
44.2 |
9.6 |
THK821-55 |
330 |
315.7 |
12.4 |
THK821-330 |
|
56 |
45.2 |
9.6 |
THK821-56 |
340 |
325.7 |
12.4 |
THK821-340 |
|
60 |
49.2 |
9.6 |
THK821-60 |
350 |
335.7 |
12.4 |
THK821-350 |
|
63 |
52.2 |
9.6 |
THK821-63 |
360 |
345.7 |
12.4 |
THK821-360 |
|
65 |
54.2 |
9.6 |
THK821-65 |
370 |
355.7 |
12.4 |
THK821-370 |
|
70 |
59.2 |
9.6 |
THK821-70 |
380 |
365.7 |
12.4 |
THK821-380 |
|
75 |
64.2 |
9.6 |
THK821-75 |
390 |
375.7 |
12.4 |
THK821-390 |
|
80 |
69.2 |
9.6 |
THK821-80 |
400 |
385.7 |
12.4 |
THK821-400 |
|
85 |
74.2 |
9.6 |
THK821-85 |
420 |
405.7 |
12.4 |
THK821-420 |
|
90 |
79.2 |
9.6 |
THK821-90 |
450 |
435.7 |
12.4 |
THK821-450 |
|
95 |
84.2 |
9.6 |
THK821-95 |
480 |
465.7 |
12.4 |
THK821-480 |
|
100 |
89.2 |
9.6 |
THK821-100 |
500 |
485.7 |
12.4 |
THK821-500 |
|
105 |
94.2 |
9.6 |
THK821-105 |
520 |
505.7 |
12.4 |
THK821-520 |
|
110 |
99.2 |
9.6 |
THK821-110 |
550 |
535.7 |
12.4 |
THK821-550 |
|
115 |
104.2 |
9.6 |
THK821-115 |
580 |
565.7 |
12.4 |
THK821-580 |
|
120 |
109.2 |
9.6 |
THK821-120 |
600 |
585.7 |
12.4 |
THK821-600 |
|
125 |
110.7 |
12.4 |
THK821-125 |
650 |
635.7 |
12.4 |
THK821-650 |
|
130 |
115.7 |
12.4 |
THK821-130 |
|
700 |
685.7 |
12.4 |
THK821-700 |
|
135 |
120.7 |
12.4 |
THK821-135 |
|
1000 |
985.7 |
12.4 |
THK821-1000 |
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