CYJ--IR内圈经热处理和精密加工而成，尺寸公差和几何精度符合国家标准，内圈滚道面两端一般有导向倒角，以便安装。它适用于轴不能进行热处理、不能直接作为滚道的场合。内圈与无内圈滚针轴承配合使用时达到正常的工作游隙。
LR内圈的公差值大于IR内圈，端面未经磨削，价格也较低，常与冲压外圈滚针轴承配合使用。
轴承代号 结构特点
IR 尺寸公差符合标准
LR 尺寸公差大于IR

轴 径 Shaft Diameter 代号 Designation 外形尺寸 Boundary Dimensions 重量 Mass 近似 Approx   轴 径 Shaft Diameter 代号 Designation 外形尺寸 Boundary Dimensions 重量 Mass 近似 Approx
d F B d F B
mm mm g mm mm g
5 IR5X8X12 5 8 12 2.79 15 IR15X18X16.5 15 18 16.5 9.9
IR5X8X16 5 8 16 3.75 IR15X19X16 15 19 16 12.8
6 IR6X9X12 6 9 12 3.17 IR15X19X20 15 19 20 16.4
IR6X9X16 6 9 16 4.3 IR15X20X12 15 20 12 12.1
IR6X10X10 6 10 10 3.7 IR15X20X13 15 20 13 13.5
IR6X10X12 6 10 12 4.6 IR15X20X14 15 20 14 14.7
7 IR7X10X10.5 7 10 10.5 3.09 IR15X20X23 15 20 23 24.4
IR7X10X12 7 10 12 3.61 17 IR17X20X16 17 20 16 10.7
IR7X10X16 7 10 16 4.9 IR17X20X16.5 17 20 16.5 11.1
7.8 IR6X12X10.5C 7.8 12.2 10.7   IR17X20X20 17 20 20 13.5
8 IR8X12X10 8 12 10 4.8 IR17X20X20.5 17 20 20.5 13.8
IR8X12X10.5 8 12 10.5 5 IR17X20X30.5 17 20 30.5 20.6
IR8X12X12 8 12 12 5.7 IR17X21X16 17 21 16 14.3
IR8X12X12.5 8 12 12.5 5.9 IR17X21X20 17 21 20 18
9 IR9X12X12 9 12 12 4.5 IR17X22X13 17 22 13 14.9
IR9X12X16 9 12 16 6.1 IR17X22X14 17 22 14 16.4
10 IR10X13X12.5 10 13 12.5 5.2 IR17X22X16 17 22 16 18.7
IR10X14X12 10 14 12 7.3 IR17X22X23 17 22 23 27.1
IR10X14X13 10 14 13 7.4 IR17X24X20 17 24 20 33.6
IR10X14X14 10 14 14 8 20 IR20X24X16 20 24 16 16.5
IR10X14X16 10 14 16 9.2 IR20X24X20 20 24 20 21.3
IR10X14X20 10 14 20 11.6 LR20X25X12.5 20 25 12.5 16.3
12 IR12X15X12 12 15 12 5.8 IR20X25X16 20 25 16 21.1
IR12X15X12.5 12 15 12.5 6.1 LR20X25X16.5 20 25 16.5 21.7
IR12X15X16 12 15 16 8 IR20X25X17 20 25 17 22.4
IR12X15X16.5 12 15 16.5 8.1 IR20X25X18 20 25 18 24.3
IR12X15X22.5 12 15 22.5 10.9 IR20X25X20 20 25 20 27.5
IR12X16X12 12 16 12 7.9 IR20X25X20.5 20 25 20.5 28.2
IR12X16X13 12 16 13 8.7 IR20X25X26.5 20 25 26.5 36.1
IR12X16X14 12 16 14 9.5 IR20X25X30 20 25 30 40.9
IR12X16X16 12 16 16 10.9 IR20X25X38.5 20 25 38.5 52.5
IR12X16X20 12 16 20 13.5 IR20X28X20 20 28 20 45.2
IR12X16X22 12 16 22 14.9 22 IR22X26X16 22 26 16 17.5
IR12X16X22.5 12 16 22.5   IR22X26X20 22 26 20 23.2
IR12X14X15.5 12 14 15.5   IR22X28X17 22 28 17 29.8
IR12X17X22.5 12 17 22.5   IR22X28X20 22 28 20 35
14 IR14X17X17 14 17 17 10 IR22X28X20.5 22 28 20.5 36
15 LR15X18X12.5 15 18 12.5 7.2 IR22X28X30 22 28 30 26.7
IR15X18X16 15 18 16 9.6 25 IR25X29X20 25 29 20 25.5


轴 径 Shaft Diameter 代号 Designation 外形尺寸 Boundary Dimensions 重量 Mass 近似 Approx   轴 径 Shaft Diameter 代号 Designation 外形尺寸 Boundary Dimensions 重量 Mass 近似 Approx
d F B d F B
mm mm g mm mm g
25 IR25X29X30 25 29 30 39.3 35 IR35X40X17 35 40 17 38.3
LR25X30X12.5 25 30 12.5 20 IR35X40X20 35 40 20 44.4
IR25X30X16 25 30 16 26 IR35X40X20.5 35 40 20.5 46.1
LR25X30X16.5 25 30 16.5 26.7 IR35X40X30 35 40 30 67.9
IR25X30X17 25 30 17 27.5 IR35X42X20 35 42 20 63.9
IR25X30X18 25 30 18 29.8 IR35X42X20.5 35 42 20.5 66
IR25X30X20 25 30 20 32.6 IR35X42X21 35 42 21 67.7
IR25X30X20.5 25 30 20.5 33.5 IR35X42X23 35 42 23 74
IR25X30X26.5 25 30 26.5 43.3 IR35X42X36 35 42 36 117
IR25X30X30 25 30 30 50.1 IR35X43X22 35 43 22 82
IR25X30X32 25 30 32 53 38 IR38X43X20 38 43 20 48.1
IR25X30X38.5 25 30 38.5 63.8 IR38X43X30 38 43 30 73.6
IR25X32X22 25 32 22 51.7 40 LR40X45X16.5 40 45 16.5 41.4
28 IR28X32X17 28 32 17 24.5 IR40X45X17 40 45 17 42.5
IR28X32X20 28 32 20 28.4 IR40X45X20 40 45 20 50.5
IR28X32X30 28 32 30 43.8 IR40X45X20.5 40 45 20.5 52.5
28.575 IRB1820 28.575 34.925 32   IR40X45X30 40 45 30 77.1
29 IR29X32X13 29 32 13 14.8 IR40X48X22 40 48 22 92.3
30 IR30X35X12.5 30 35 12.5 23.3 IR40X48X23 40 48 23 97.3
IR30X35X13 30 35 13 25 IR40X48X40 40 48 40 170
IR30X35X16 30 35 16 30.8 IR40X50X20 40 50 20 106
IR30X35X16.5 30 35 16.5 31.4 IR40X50X22 40 50 22 118
IR30X35X17 30 35 17 32.3 IR40X45X22.5 40 45 22.5  
IR30X35X18 30 35 18 35.3 42 IR42X47X20 42 47 20 53.5
IR30X35X20 30 35 20 40 IR42X47X30 42 47 30 81
IR30X35X20.5 30 35 20.5 40.7 45 L, , , , , , R45X50X20.5 45 50 20.5 58.8
IR30X35X26 30 35 26 50.3 IR45X50X25 45 50 25 71.1
IR30X35X30 30 35 30 58.9 IR45X50X25.5 45 50 25.5 73.7
IR30X37X18 30 37 18 50 IR45X50X35 45 50 35 101
IR30X37X22 30 37 22 60.8 IR45X52X22 45 52 22 89
IR30X38X20 30 38 20 64.8 IR45X52X23 45 52 23 93
32 IR32X37X20 32 37 20 42 IR45X52X40 45 52 40 164
IR32X37X30 32 37 30 62.7 IR45X55X20 45 55 20 117
IR32X40X20 32 40 20 68 IR45X55X22 45 55 22 130
IR32X40X36 32 40 36 124 IR45X50X20 45 50 20  
33 IR33X37X13 33 37 13 21.9 IR45X50X26 45 50 26  
34 IR34X42X20 34 42 20   IR45X50X40 45 50 40  
35 LR35X40X12.5 35 40 12.5 27.2 45.2 IR45.2X58X36 45.2 58 36  
LR35X40X16.5 35 40 16.5 37.4 47 IR47X60X35 47 60 35  


轴 径 Shaft Diameter 代号 Designation 外形尺寸 Boundary Dimensions 重量 Mass 近似 Approx   轴 径 Shaft Diameter 代号 Designation 外形尺寸 Boundary Dimensions 重量 Mass 近似 Approx
d F B d F B
mm mm g mm mm g
50 IR50X55X20 50 55 20 62.6 75 IR75X85X35 75 85 35 336
LR50X55X20.5 50 55 20.5 64.1 IR75X85X54 75 85 54 520
IR50X55X25 50 55 25 77.8 80 IR80X90X25 80 90 25 254
IR50X55X35 50 55 35 112 IR80X90X30 80 90 30 304
IR50X58X22 50 58 22 115 IR80X90X35 80 90 35 355
IR50X58X23 50 58 23 119 IR80X90X54 80 90 54 550
IR50X58X40 50 58 40 209 85 IR85X95X26 85 95 26 280
IR50X60X20 50 60 20 129 IR85X95X36 85 95 36 390
IR50X60X25 50 60 25 163 IR85X100X35 85 100 35 580
IR50X60X28 50 60 28 183 IR85X100X63 85 100 63 1050
55 IR55X60X25 55 60 25 86 IR88X100X30 88 100 30  
IR55X60X35 55 60 35 121 90 IR90X100X26 90 100 26 294
IR55X63X25 55 63 25 141 IR90X100X30 90 100 30 340
IR55X63X45 55 63 45 256 IR90X100X36 90 100 36 406
IR55X65X28 55 65 28 198 IR90X105X35 90 105 35 610
60 IR60X65X41 60 65 41   IR90X105X63 90 105 63 1110
IR60X68X25 60 68 25 152 95 IR95X105X26 95 105 26 313
IR60X68X35 60 68 35 213 IR95X105X36 95 105 36 430
IR60X68X45 60 68 45 275 IR95X110X35 95 110 35 643
IR60X70X25 60 70 25 195 IR95X110X63 95 100 63 1170
IR60X70X28 60 70 28 216 100 IR100X110X30 100 110 30 370
65 IR65X72X25 65 72 25 142 IR100X110X40 100 110 40 505
IR65X72X45 65 72 45 259 IR100X115X40 100 115 40 775
IR65X73X25 65 73 25 164 110 IR110X120X30 110 120 30 409
IR65X73X35 65 73 35 232 IR110X125X40 110 125 40 840
IR65X75X28 65 75 28 230 120 IR120X130X30 120 130 30 442
70 IR70X80X25 70 80 25 224 IR120X135X45 120 135 45 1000
IR70X80X30 70 80 30 267 130 IR130X145X35 130 145 35 855
IR70X80X35 70 80 35 313 IR130X150X50 130 150 50 1690
IR70X80X54 70 80 54 487 140 IR140X155X35 140 155 35 917
IR70X80X56 70 80 56 506 IR140X160X50 140 160 50 1800
75 IR75X85X25 75 85 25 238 150 IR150X165X40 150 165 40 1120
IR75X85X30 75 85 30 287 160 IR160X175X40 160 175 40 1200

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