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向心滚针和保持架组件
向心滚针和保持架组件是独立的滚动元件，具有高承载能力和高刚性的特性，广泛应用于径向尺寸有限的元件中。每根针都由保持架精确引导并保持稳定，从而获得更好的高速性能。
保持架材质一般使用优质碳素钢、15CrMo、20CrMo或者尼龙材质。钢质保持架经过热处理后，具有足够的强度和耐磨性，尼龙保持架最高运转温度一般为120度，短期允许180度。保持架也可以进行镀铜、镀银、磷化、发黑等特殊表面处理。
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结构形式： |
K |
单列向心滚针和保持架组件 |
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KK |
双列向心滚针和保持架组件 |
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KS |
剖分式单列向心滚针和保持架组件 |
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KKS |
剖分式双列向心滚针和保持架组件 |
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KZK |
连杆曲柄销用滚针和保持架组件 |
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KBK |
连杆活塞用滚针和保持架组件 |
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轴径 |
轴承型号 |
外形尺寸 |
基本额定负荷 |
极限转速 |
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直径 |
现行的 |
被取代的 |
内径 |
外径 |
宽度 |
动载荷 |
静载荷 |
油润滑 |
|
mm |
mm |
N |
rpm |
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|
5 |
K5×8×8 |
29241/5 |
5 |
8 |
8 |
2300 |
1880 |
37000 |
|
K5×8×10 |
39241/5 |
5 |
8 |
10 |
2800 |
2450 |
37000 |
|
|
6 |
K6×9×8 |
29241/6 |
6 |
9 |
8 |
2560 |
2240 |
35000 |
|
K6×9×10 |
39241/6 |
6 |
9 |
10 |
3300 |
3100 |
35000 |
|
|
K6×10×13 |
49241/6 |
6 |
10 |
13 |
3500 |
2800 |
33000 |
|
|
7 |
K7×10×8 |
29241/7 |
7 |
10 |
8 |
2750 |
2550 |
32000 |
|
K7×10×10 |
39241/7 |
7 |
10 |
10 |
3350 |
3400 |
32000 |
|
|
8 |
K8×11×8 |
29241/8 |
8 |
11 |
8 |
3000 |
2900 |
30000 |
|
K8×11×10 |
39241/8 |
8 |
11 |
10 |
3830 |
3950 |
30000 |
|
|
K8×11×11 |
|
8 |
11 |
11 |
3830 |
3950 |
30000 |
|
|
K8×12×10 |
29242/8 |
8 |
12 |
10 |
4900 |
4600 |
30000 |
|
|
9 |
K9×12×10 |
39241/9 |
9 |
12 |
10 |
4200 |
4700 |
30000 |
|
K9×12×13 |
49241/9 |
9 |
12 |
13 |
5500 |
6700 |
30000 |
|
|
10 |
K10×13×10 |
39241/10 |
10 |
13 |
10 |
4500 |
5250 |
27000 |
|
K10×13×13 |
39241/10 |
10 |
13 |
13 |
6000 |
7600 |
27000 |
|
|
K10×13×16 |
|
10 |
13 |
16 |
6300 |
7800 |
27000 |
|
|
K10×14×10 |
29242/10 |
10 |
14 |
10 |
7000 |
7900 |
27000 |
|
|
K10×14×13 |
39242/10 |
10 |
14 |
13 |
8000 |
9100 |
26000 |
|
|
K10×16×12 |
19244/10 |
10 |
16 |
12 |
7000 |
9300 |
27000 |
|
|
12 |
K12×15×9 |
|
12 |
15 |
9 |
4120 |
5210 |
25000 |
|
K12×15×10 |
39241/12 |
12 |
15 |
10 |
4320 |
5730 |
25000 |
|
|
K12×15×13 |
49241/12 |
12 |
15 |
13 |
6000 |
8100 |
25000 |
|
|
K12×16×8 |
19242/12 |
12 |
16 |
8 |
4200 |
4700 |
25000 |
|
|
K12×16×10 |
29242/12 |
12 |
16 |
10 |
6000 |
6900 |
25000 |
|
|
K12×16×13 |
39242/12 |
12 |
16 |
13 |
7900 |
9200 |
25000 |
|
|
K12×17×13 |
59242/12 |
12 |
17 |
13 |
9300 |
10000 |
24000 |
|
|
K12×18×12 |
19244/12 |
12 |
18 |
12 |
9800 |
8000 |
24000 |
|
|
K12×15×20 |
K12×15×20 |
12 |
15 |
20 |
8200 |
12000 |
25000 |
|
|
14 |
K14×18×17 |
59241/14 |
14 |
18 |
17 |
10500 |
13900 |
23000 |
|
K14×20×12 |
19243/14 |
14 |
20 |
12 |
9900 |
10500 |
22000 |
|
|
15 |
K15×19×17 |
59241/15 |
15 |
19 |
17 |
8300 |
9800 |
22000 |
|
K15×20×10 |
19242/15 |
15 |
20 |
10 |
9700 |
11000 |
22000 |
|
|
16 |
K16×22×12 |
19243/16 |
16 |
22 |
12 |
11000 |
12000 |
21000 |
|
K16×22×16 |
|
16 |
22 |
16 |
14300 |
17000 |
21000 |
|
|
17 |
K17X21X10 |
29241/17 |
17 |
21 |
10 |
7900 |
10100 |
21000 |
|
K17X21X13 |
39241/17 |
17 |
21 |
13 |
10000 |
14100 |
21000 |
|
|
K17X21X17 |
59241/17 |
17 |
21 |
17 |
12000 |
17400 |
21000 |
|
|
K17X23X14 |
29243/17 |
17 |
23 |
14 |
11000 |
15000 |
21000 |
|
|
18 |
K18X22X10 |
29241/18 |
18 |
22 |
10 |
8200 |
9900 |
20000 |
|
K18X22X13 |
39241/18 |
18 |
22 |
13 |
9000 |
12100 |
20000 |
|
|
K18X22X17 |
59241/18 |
18 |
22 |
17 |
11900 |
17600 |
20000 |
|
|
K18X24X12 |
19243/18 |
18 |
24 |
12 |
11200 |
12900 |
20000 |
|
|
K18X24X13 |
|
18 |
24 |
13 |
12900 |
14900 |
20000 |
|
|
K18X24X13.5 |
|
18 |
24 |
13.5 |
12900 |
14900 |
20000 |
|
|
K18X24X20 |
49243/18 |
18 |
24 |
20 |
20000 |
26500 |
20000 |
|
|
K18X25X14 |
|
18 |
25 |
14 |
16500 |
18800 |
20000 |
|
|
K18X25X22 |
|
18 |
25 |
22 |
22900 |
28400 |
20000 |
|
|
K18X26X14 |
|
18 |
26 |
14 |
18000 |
20000 |
18000 |
|
|
K18X28X16 |
19244/18 |
18 |
28 |
16 |
19000 |
18400 |
19000 |
|
|
19 |
K19X23X13 |
|
19 |
23 |
13 |
9300 |
13000 |
20000 |
|
K19X23X17 |
|
19 |
23 |
17 |
12000 |
18600 |
20000 |
|
|
20 |
K20X24X10 |
29241/20 |
20 |
24 |
10 |
8700 |
12100 |
19000 |
|
K20X24X12 |
|
20 |
24 |
12 |
9600 |
13800 |
19000 |
|
|
K20X24X13 |
39241/20 |
20 |
24 |
13 |
9600 |
13800 |
19000 |
|
|
K20X24X17 |
59241/20 |
20 |
24 |
17 |
12400 |
20000 |
19000 |
|
|
K20X26X12 |
19243/20 |
20 |
26 |
12 |
13100 |
15700 |
19000 |
|
|
K20X26X16 |
K9249/20 |
20 |
26 |
16 |
18000 |
25000 |
18500 |
|
|
K20X26X17 |
39243/20 |
20 |
26 |
17 |
18700 |
25500 |
19000 |
|
|
K20X26X20 |
49243/20 |
20 |
26 |
20 |
20600 |
28500 |
19000 |
|
|
K20X28X20 |
19245/20 |
20 |
28 |
20 |
23400 |
28000 |
18000 |
|
|
K20X28X25 |
29245/20 |
20 |
28 |
25 |
30000 |
28500 |
18000 |
|
|
K20X30X30 |
39245/20 |
20 |
30 |
30 |
35000 |
41000 |
18000 |
|
|
21 |
K21X25X13 |
|
21 |
25 |
13 |
9600 |
14500 |
19000 |
|
K21X25X17 |
|
21 |
25 |
17 |
12800 |
21000 |
19000 |
|
|
22 |
K22X26X10 |
29241/22 |
22 |
26 |
10 |
8700 |
12900 |
18000 |
|
K22X26X13 |
39241/22 |
22 |
26 |
13 |
10000 |
15400 |
18000 |
|
|
K22X26X17 |
59241/22 |
22 |
26 |
17 |
13100 |
22100 |
18000 |
|
|
K22X27X13 |
29242/22 |
22 |
27 |
13 |
14000 |
23000 |
18000 |
|
|
K22X28X17 |
39243/22 |
22 |
28 |
17 |
19000 |
26500 |
18000 |
|
|
K22X28X23 |
59243/22 |
22 |
28 |
23 |
20000 |
27000 |
19000 |
|
|
K22X29X16 |
19244/22 |
22 |
29 |
16 |
19500 |
25000 |
17000 |
|
|
K22X30X15TN |
|
22 |
30 |
15 |
19600 |
22900 |
17000 |
|
|
K22X30X20 |
19245/22 |
22 |
30 |
20 |
21000 |
23500 |
18900 |
|
|
K22X32X24 |
|
22 |
32 |
24 |
33500 |
39500 |
16000 |
|
|
23 |
K23X35X16TN |
|
23 |
35 |
16 |
24000 |
23400 |
15000 |
|
24 |
K24X28X10 |
|
24 |
28 |
10 |
9400 |
14300 |
17000 |
|
K24X28X13 |
|
24 |
28 |
13 |
10500 |
17000 |
17000 |
|
|
K24X28X17 |
9243/24 |
24 |
28 |
17 |
14000 |
24500 |
17000 |
|
|
K24X29X13 |
|
24 |
29 |
13 |
13100 |
19100 |
16000 |
|
|
K24X30X17 |
|
24 |
30 |
17 |
19000 |
27000 |
16000 |
|
|
K24X30X31 |
|
24 |
30 |
31 |
27000 |
43000 |
16000 |
|
|
25 |
K25X29X10 |
29241/25 |
25 |
29 |
10 |
9700 |
14900 |
16000 |
|
K25X29X13 |
39241/25 |
25 |
29 |
13 |
10800 |
17900 |
16000 |
|
|
K25X29X17 |
59241/25 |
25 |
29 |
17 |
14500 |
25500 |
16000 |
|
|
K25X30X13 |
29242/25 |
25 |
30 |
13 |
14100 |
21300 |
16000 |
|
|
K25X30X20 |
59242/25 |
25 |
30 |
20 |
21100 |
28000 |
16000 |
|
|
K25X30X25 |
|
25 |
30 |
25 |
21700 |
40400 |
15000 |
|
|
K25X30X26 |
52.436 |
25 |
30 |
26 |
20100 |
26500 |
15000 |
|
|
K25X31X17 |
39243/25 |
25 |
31 |
17 |
19000 |
28000 |
16000 |
|
|
K25X31X21 |
39243/25 |
25 |
31 |
21 |
24100 |
37500 |
16000 |
|
|
K25X32X16 |
19244/25 |
25 |
32 |
16 |
20500 |
27500 |
15000 |
|
|
K25X33X20 |
19245/25 |
25 |
33 |
20 |
28000 |
37500 |
15000 |
|
|
K25X33X24 |
29245/25 |
25 |
33 |
24 |
33900 |
46500 |
15000 |
|
|
K25X34X18 |
|
25 |
34 |
18 |
48000 |
67000 |
15000 |
|
|
K25X35X30 |
39245/25 |
25 |
35 |
30 |
46500 |
61500 |
14000 |
|
|
K25X30X26 ZW |
|
25 |
30 |
26 |
21000 |
35000 |
14000 |
|
|
K26X30X17 |
|
26 |
30 |
17 |
14700 |
27000 |
16000 |
|
|
K27X32X17 |
|
27 |
32 |
17 |
16000 |
34000 |
17000 |
|
|
K28X33X13 |
29241/26 |
28 |
33 |
13 |
14800 |
23600 |
14000 |
|
|
K28X33X17 |
49241/28 |
28 |
33 |
17 |
19100 |
33000 |
14000 |
|
|
K28X34X17 |
39242/28 |
28 |
34 |
17 |
21300 |
35000 |
14000 |
|
|
K28X35X20 |
29243/28 |
28 |
35 |
20 |
24000 |
34000 |
14000 |
|
|
K30X35X17 |
49241/30 |
30 |
35 |
17 |
19100 |
33500 |
13000 |
|
|
K30X35X27 |
19241/30 |
30 |
35 |
27 |
30000 |
58500 |
13000 |
|
|
K30X38X25 |
29244/30 |
30 |
38 |
25 |
16000 |
39000 |
13000 |
|
|
K30X40X30 |
49243/30 |
30 |
40 |
30 |
48500 |
68500 |
13000 |
|
|
K32X37X13 |
29241/32 |
32 |
37 |
13 |
15000 |
25000 |
12000 |
|
|
K32X38X20 |
49242/32 |
32 |
38 |
20 |
26000 |
44500 |
12000 |
|
|
K32X39X16 |
19243/32 |
32 |
39 |
16 |
23500 |
35000 |
12000 |
|
|
K32X40X20 |
19244/32 |
32 |
40 |
20 |
37000 |
40500 |
12000 |
|
|
K35X40X17 |
49241/35 |
35 |
40 |
17 |
20300 |
38000 |
11000 |
|
|
K35X40X27 |
79241/35 |
35 |
40 |
27 |
27800 |
62100 |
11000 |
|
|
K35X42X16 |
19243/35 |
35 |
42 |
16 |
23900 |
37000 |
11000 |
|
|
K35X42X30 |
49243/35 |
35 |
42 |
30 |
38500 |
67500 |
11000 |
|
|
K35X45X30 |
29245/35 |
35 |
45 |
30 |
52500 |
78500 |
10000 |
|
|
K35X42X20ZW |
29243/35 |
35 |
42 |
20 |
29500 |
48500 |
11000 |
|
|
K38X43X27 |
79241/38 |
38 |
43 |
27 |
31000 |
67500 |
10000 |
|
|
K38X46X20 |
19244/38 |
38 |
46 |
20 |
35000 |
56500 |
10000 |
|
|
K40X45X17 |
49241/40 |
40 |
45 |
17 |
20900 |
41000 |
10000 |
|
|
K40X45X27 |
19241/40 |
40 |
45 |
27 |
32500 |
72500 |
10000 |
|
|
K40X48X20 |
19244/40 |
40 |
48 |
20 |
35500 |
58500 |
9000 |
|
|
K42X47X13 |
29241/42 |
42 |
47 |
13 |
17300 |
33000 |
9000 |
|
|
K42X47X27 |
79241/42 |
42 |
47 |
27 |
33000 |
74500 |
9000 |
|
|
K42X50X50 |
19244/42 |
42 |
50 |
20 |
34500 |
56500 |
9000 |
|
|
K45X50X17 |
49241/45 |
45 |
50 |
17 |
22000 |
45000 |
8000 |
|
|
K45X50X27 |
19241/45 |
45 |
50 |
27 |
34000 |
79500 |
8000 |
|
|
K45X53X20 |
19244/45 |
45 |
53 |
20 |
38500 |
66500 |
8000 |
|
|
K48X54X19 |
39242/48 |
48 |
54 |
19 |
30000 |
60500 |
7500 |
|
|
K50X55X17ZW |
49241/50 |
50 |
55 |
17 |
21400 |
46500 |
7500 |
|
|
K50X55X30 |
9243/50 |
50 |
55 |
30 |
38500 |
96500 |
7500 |
|
|
K50X58X20 |
19244/50 |
50 |
58 |
20 |
35000 |
61500 |
7000 |
|
|
K50X58X25 |
29244/50 |
50 |
58 |
25 |
43500 |
80500 |
7000 |
|
|
K55X61X20 |
49241/55 |
55 |
61 |
20 |
41000 |
11000 |
6500 |
|
|
K55X63X25 |
29243/55 |
55 |
63 |
25 |
49500 |
99500 |
6500 |
|
|
K60X65X30 |
69241/60 |
60 |
65 |
30 |
42000 |
115500 |
6000 |
|
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