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JBT7919.3-1999 滚动轴承 附件 锁紧螺母和锁紧装置

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JBT7919.3-1999 滚动轴承 附件 锁紧螺母和锁紧装置 ICS 21. 100. 20 J 11 JB/T 7919.3-1999 neq ISO 2982–2∶1995 滚 动 轴 承 附件 锁紧螺母和锁紧装置 Rolling bearings–Accessories—Locknuts and locking devices 1999-06-28 发布 2000-01-01 实施 国 家 机 械 工 业 局 发 布 I 前言 1 范围·····························...

JBT7919.3-1999 滚动轴承 附件 锁紧螺母和锁紧装置
ICS 21. 100. 20 J 11 JB/T 7919.3-1999 neq ISO 2982–2∶1995 滚 动 轴 承 附件 锁紧螺母和锁紧装置 Rolling bearings–Accessories—Locknuts and locking devices 1999-06-28 发布 2000-01-01 实施 国 家 机 械 工 业 局 发 布 I 前言 1 范围····················································································································································································································1 2 引用 标准 excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载 ·········································································································································································································1 3 术语····················································································································································································································1 4 符号····················································································································································································································1 5 代号方法·········································································································································································································4 6 标记····················································································································································································································5 7 尺寸·················································································································································································································5 8 技术 要求 对教师党员的评价套管和固井爆破片与爆破装置仓库管理基本要求三甲医院都需要复审吗 ·······································································································································································································12 9 测量方法·······································································································································································································14 10 标志···············································································································································································································15 11 检验规则·····································································································································································································15 12 包装···············································································································································································································15 附录 A(标准的附录) 宽系列锁紧螺母及带弯内爪的锁紧垫圈尺寸和公差·······················································16 JB/T 7919.3-1999 目 次 ????? www.bzfxw.com ???? www.bzfxw.com II 前 言 本标准非等效采用 ISO 2982–2∶1995《滚动轴承 附件 锁紧螺母和锁紧装置》。标准中补充了 ISO 标准未规定的技术条件。 本标准是将 JB/T 7919.4—95《滚动轴承 附件 锁紧螺母基本尺寸》、JB/T 7919.5—95《滚动轴 承 附件 锁紧垫圈基本尺寸》、JB/T 7919.6—95《滚动轴承 附件 锁紧卡基本尺寸》、JB/T 7919.7 —95《滚动轴承 附件 锥形衬套、锁紧螺母和锁紧垫圈技术条件》(部分)、JB/T 7916—95《滚动轴 承用锁紧螺母(宽系列)及带弯内爪的锁紧垫圈》五个标准合并,并作了修改,修改的主要内容为: ——增加了大于 500~1060 mm的尺寸段; ——在锁紧螺母中增加了适用的锁紧垫圈和锁紧卡型号; ——修改了部分尺寸的公差值。 本标准自实施之日起代替 JB/T 7919.4~7919.6—95、JB/T 7919.7—95(部分)、JB/T 7916—95。 本标准的附录 A 是标准的附录。 本标准由全国滚动轴承标准化技术委员会提出并归口。 本标准起草单位:洛阳轴承研究所。 本标准主要起草人:郭宝霞、李飞雪、陈 原。 JB/T 7919.3-1999 www.bzfxw.com 1 1 范围 本标准规定了锁紧螺母(简称螺母)、锁紧装置的尺寸、技术要求、验收规则和测量方法等。 本标准适用于锥形衬套用螺母和锁紧装置的设计、生产、检验和用户验收。 2 引用标准 下列标准所包含的条文,通过在本标准中引用而构成为本标准的条文。本标准出版时,所示版本均 为有效。所有标准都会被修订,使用本标准的各方应探讨使用下列标准最新版本的可能性。 GB/T 192—1981 普通螺纹 基本牙型 GB/T 196—1981 普通螺纹 基本尺寸(直径 1~600 mm) GB/T 272—1993 滚动轴承 代号方法 GB/T 699—1988 优质碳素结构钢 技术条件 GB/T 1804—1992 一般公差 线性尺寸的未注公差 GB/T 2516—1981 普通螺纹偏差表(直径 1~355 mm) GB/T 5796.1—1986 梯形螺纹 牙型 GB/T 5796.3—1986 梯形螺纹 基本尺寸 GB/T 5796.4—1986 梯形螺纹 公差 GB/T 6930—1986 滚动轴承 词汇 GB/T 8597—1988 滚动轴承 包装 JB/T 3574—1997 滚动轴承 产品标志 JB/T 8921—1999 滚动轴承及其商品零件 检验规则 3 术语 本标准采用的术语符合 GB/T 6930 的规定。 4 符号 4. 1 锁紧螺母(见图 1) 国家机械工业局 1999-06-28 批准 中 华 人 民 共 和 国 机 械 行 业 标 准 滚 动 轴 承 附件 锁紧螺母和锁紧装置 Rolling bearings–Accessories—Locknuts and locking devices JB/T 7919.3-1999 neq ISO 2982–2∶1995 代替 JB/T 7919.4~7919.6— 95 JB/T 7916—95 部分代替 JB/T 7919.7—95 2000-01-01 实施 ????? www.bzfxw.com ???? www.bzfxw.com JB/T 7919.3- 1999 2 图 1 锁紧螺母 d:螺母螺纹公称直径 d1:螺母端面 30°倒角直径 d2:螺母公称外径 B:螺母宽度 b:螺母锁紧槽宽度 h:螺母锁紧槽深度 d6:螺母端面内倒角直径 g:螺母锁紧槽根部直径 r1max:螺母锁紧槽根部倒角尺寸的最大值 l:螺母端面螺孔深度 s:螺母端面螺孔基本直径 dp:螺母端面螺孔中心圆直径 Δd1s:螺母 d1 的单一直径偏差 Δd2s:螺母外径偏差 www.bzfxw.com JB/T 7919.3- 1999 3 ΔBs:螺母宽度偏差 Δbs:螺母锁紧槽宽度偏差 Δhs:螺母锁紧槽深度偏差 Sd:螺母基准端面(30°倒角端面)圆跳动 VBs:螺母宽度变动量 4. 2 锁紧垫圈(见图 2) 直内爪 弯内爪 图 2 锁紧垫圈 d3:锁紧垫圈内径 d4:锁紧垫圈外爪的根部直径 d5:锁紧垫圈外径 B1:锁紧垫圈厚度 B2:弯内爪凸出量 M:直(弯)内爪与垫圈内孔表面间的距离,M=d3 – 内爪高度 f:锁紧垫圈外爪宽度 f1:锁紧垫圈内爪宽度 N:锁紧垫圈外爪数 r2:锁紧垫圈弯内爪根部的倒角尺寸 Δd3s:锁紧垫圈内径偏差 Δd4s:锁紧垫圈外爪根部直径偏差 ΔB1s:锁紧垫圈厚度偏差 ΔB2s:锁紧垫圈弯内爪凸出量偏差 Δfs:锁紧垫圈外爪宽度偏差 Δf1s:锁紧垫圈内爪宽度偏差 ΔMs:锁紧垫圈 M 的偏差 VB1s:锁紧垫圈厚度变动量 4. 3 锁紧卡(见图 3) ????? www.bzfxw.com ???? www.bzfxw.com JB/T 7919.3- 1999 4 图 3 锁紧卡 d7:锁紧卡螺钉用孔直径 B3:锁紧卡壁厚 B4:锁紧卡宽度 L1:锁紧卡内壁宽度 L2:锁紧卡高度 L3:锁紧卡长度 L4:螺纹长度 ΔB4s:锁紧卡宽度偏差 ΔL2s:锁紧卡高度偏差 5 代号方法 螺母、锁紧垫圈和锁紧卡的代号均由类型代号、尺寸系列代号和表示螺母公称直径的直径代号组成, 并按此顺序排列。 5. 1 类型代号 类型代号用下列字母表示: KM—螺母类型代号,表示公制普通螺纹 HM—螺母类型代号,表示公制梯形螺纹 MB—锁紧垫圈类型代号,表示直内爪 MBA—锁紧垫圈类型代号,表示内爪向内弯 MBB—锁紧垫圈类型代号,表示内爪向外弯 MS—锁紧卡类型代号 5. 2 尺寸系列代号 尺寸系列代号用字母 L 表示 30 系列,W 表示宽系列,其他系列省略。 5. 3 直径代号 表示螺母公称直径的直径代号按 GB/T 272 中轴承内径的规定。 5. 4 代号示例 www.bzfxw.com JB/T 7919.3- 1999 5 KM L 08 MBA L 08 MS L 48 6 标记 标记示例: 公称直径为 40 mm的螺母,标记为: KM 08 JB/T 7919.3—1999 对应的螺母公称直径为 40 mm 的直内爪锁紧垫圈,标记为: MB 08 JB/T 7919.3—1999 对应的螺母公称直径为 240 mm、30系列的锁紧卡,标记为: MSL 48 JB/T 7919.3—1999 7 尺寸 7. 1 螺母的尺寸按表 1、表 2 的规定,宽系列见附录 A(标准的附录)。 表 1 KM、HM 型锁紧螺母 mm 尺 寸 参 考 尺 寸 锁紧螺母 型 号 螺 纹 d d1 d2 B b h d6 g r1max l s dp 适用的锁紧 垫圈型号 适用的锁 紧卡型号 KM 00 KM 01 KM 02 M10×0.75 M12×1 M15×1 10 12 15 13.5 17 21 18 22 25 4 4 5 3 3 4 2 2 2 10.5 12.5 15.5 14 18 21 0.4 0.4 0.4 — — — — — — — — — MB 00 MB 01 MB 02 — — — KM 03 KM 04 KM/22 M17×1 M20×1 M22×1 17 20 22 24 26 28 28 32 34 5 6 6 4 4 4 2 2 2 17.5 20.5 22.5 24 28 30 0.4 0.4 0.4 — — — — — — — — — MB 03 MB 04 MB/22 — — — 螺母公称直径代号 尺寸系列代号 螺母类型代号 对应的螺母公称直径代号 尺寸系列代号 锁紧垫圈类型代号 对应的螺母公称直径代号 尺寸系列代号 锁紧卡类型代号 ????? www.bzfxw.com ???? www.bzfxw.com JB/T 7919.3- 1999 6 表 1(续) mm 尺 寸 参 考 尺 寸 锁紧螺母 型 号 螺 纹 d d1 d2 B b h d6 g r1max l s dp 适用的锁紧 垫圈型号 适用的锁 紧卡型号 KM 05 KM/28 KM 06 M 25×1.5 M 28×1.5 M 30×1.5 25 28 30 32 36 38 38 42 45 7 7 7 5 5 5 2 2 2 25.8 28.8 30.8 34 38 41 0.4 0.4 0.4 — — — — — — — — — MB 05 MB/28 MB 06 — — — KM/32 KM 07 KM 08 M 32×1.5 M 35×1.5 M 40×1.5 32 35 40 40 44 50 48 52 58 8 8 9 5 5 6 2 2 2.5 32.8 35.8 40.8 44 48 53 0.4 0.4 0.5 — — — — — — — — — MB/32 MB 07 MB 08 — — — KM 09 KM 10 KM 11 M 45×1.5 M 50×1.5 M 55×2 45 50 55 56 61 67 65 70 75 10 11 11 6 6 7 2.5 2.5 3 45.8 50.8 56 60 65 69 0.5 0.5 0.5 — — — — — — — — — MB 09 MB 10 MB 11 — — — KM 12 KM 13 KM 14 M 60×2 M 65×2 M 70×2 60 65 70 73 79 85 80 85 92 11 12 12 7 7 8 3 3 3.5 61 66 71 74 79 85 0.5 0.5 0.5 — — — — — — — — — MB 12 MB 13 MB 14 — — — KM 15 KM 16 KM 17 M 75×2 M 80×2 M 85×2 75 80 85 90 95 102 98 105 110 13 15 16 8 8 8 3.5 3.5 3.5 76 81 86 91 98 103 0.5 0.6 0.6 — — — — — — — — — MB 15 MB 16 MB 17 — — — KM 18 KM 19 KM 20 M 90×2 M 95×2 M 100×2 90 95 100 108 113 120 120 125 130 16 17 18 10 10 10 4 4 4 91 96 101 112 117 122 0.6 0.6 0.6 — — — — — — — — — MB 18 MB 19 MB 20 — — — KM 21 KM 22 KM 23 M 105×2 M 110×2 M 115×2 105 110 115 126 133 137 140 145 150 18 19 19 12 12 12 5 5 5 106 111 116 130 135 140 0.7 0.7 0.7 — — — — — — — — — MB 21 MB 22 MB 23 — — — KM 24 KM 25 KM 26 M 120×2 M 125×2 M 130×2 120 125 130 138 148 149 155 160 165 20 21 21 12 12 12 5 5 5 121 126 131 145 150 155 0.7 0.7 0.7 — — — — — — — — — MB 24 MB 25 MB 26 — — — KM 27 KM 28 KM 29 M 135×2 M 140×2 M 145×2 135 140 145 160 160 171 175 180 190 22 22 24 14 14 14 6 6 6 136 141 146 163 168 178 0.7 0.7 0.7 — — — — — — — — — MB 27 MB 28 MB 29 — — — KM 30 KM 31 KM 32 M 150×2 M 155×3 M 160×3 150 155 160 171 182 182 195 200 210 24 25 25 14 16 16 6 7 7 151 156.5 161.5 183 186 196 0.7 0.7 0.7 — — — — — — — — — MB 30 MB 31 MB 32 — — — KM 33 KM 34 KM 36 KM 38 KM 40 M 165×3 M 170×3 M 180×3 M 190×3 M 200×3 165 170 180 190 200 193 193 203 214 226 210 220 230 240 250 26 26 27 28 29 16 16 18 18 18 7 7 8 8 8 166.5 171.5 181.5 191.5 201.5 196 206 214 224 234 0.7 0.7 0.7 0.7 0.7 — — — — — — — — — — — — — — — MB 33 MB 34 MB 36 MB 38 MB 40 — — — — — www.bzfxw.com JB/T 7919.3- 1999 7 表 1(完) mm 尺 寸 参 考 尺 寸 锁紧螺母 型 号 螺 纹 d d1 d2 B b h d6 g r1max l s dp 适用的锁紧 垫圈型号 适用的锁 紧卡型号 HM 42 HM 44 HM 46 HM 48 Tr 210×4 Tr 220×4 Tr 230×4 Tr 240×4 210 220 230 240 238 250 260 270 270 280 290 300 30 32 34 34 20 20 20 20 10 10 10 10 212 222 — 242 250 260 — 280 0.8 0.8 — 0.8 — 15 — 15 — M 8 — M 8 — 238 — 258 MB 42 MB 44 — MB 48 — MS 44 — MS 44 HM 50 HM 52 HM 56 Tr 250×4 Tr 260×4 Tr 280×4 250 260 280 290 300 320 320 330 350 36 36 36 20 24 24 10 12 12 — 262 282 — 306 326 — 0.8 0.8 — 18 18 — M 10 M 10 — 281 301 — MB 52 MB 56 — MS 52 MS 52 HM 58 HM 60 HM 62 Tr 290×4 Tr 300×4 Tr 310×5 290 300 310 330 340 350 370 380 390 40 40 42 24 24 24 12 12 12 292 302 312.5 346 356 366 0.8 0.8 0.8 — 18 — — M 10 — — 326 — — — — — MS 60 — HM 64 HM 66 HM 68 Tr 320×5 Tr 330×5 Tr 340×5 320 330 340 360 380 400 400 420 440 42 52 55 24 28 28 12 15 15 322.5 332.5 342.5 376 390 410 0.8 1 1 18 — 21 M 10 — M 12 345 — 372 — — — MS 64 — MS 68 HM 70 HM 72 HM 74 Tr 350×5 Tr 360×5 Tr 370×5 350 360 370 410 420 430 450 460 470 55 58 58 28 28 28 15 15 15 352.5 362.5 372.5 420 430 440 1 1 1 — 21 — — M 12 — — 392 — — — — — MS 68 — HM 76 HM 80 Tr 380×5 Tr 400×5 380 400 440 460 490 520 60 62 32 32 18 18 382.5 402.5 454 484 1 1 21 27 M 12 M 16 414 439 — — MS 76 MS 80 HM 84 HM 88 HM 92 Tr 420×5 Tr 440×5 Tr 460×5 420 440 460 490 510 540 540 560 580 70 70 75 32 36 36 18 20 20 422.5 442.5 462.5 504 520 540 1 1 1 27 27 27 M 16 M 16 M 16 459 477 497 — — — MS 80 MS 88 MS 88 HM 96 HM/500 Tr 480×5 Tr 500×5 480 500 560 580 620 630 75 80 36 40 20 23 482.5 502.5 580 584 1 1 27 27 M 16 M 16 527 539 — — MS 96 MS/500 HM/510 HM/530 HM/550 Tr 510×6 Tr 530×6 Tr 550×6 510 530 550 590 610 640 650 670 700 80 80 80 40 40 40 23 23 23 513 533 553 604 624 654 1 1 1 — — — — — — — — — — — — — MS/530 — HM/560 HM/600 HM/630 Tr 560×6 Tr 600×6 Tr 630×6 560 600 630 650 690 730 710 750 800 85 85 95 45 45 50 25 25 28 — — — — — — — — — — — — — — — — — — — — — MS/560 MS/560 MS/630 HM/670 HM/710 HM/750 Tr 670×6 Tr 710×7 Tr 750×7 670 710 750 775 825 875 850 900 950 106 106 112 50 55 60 28 30 34 — — — — — — — — — — — — — — — — — — — — — MS/670 MS/710 MS/750 HM/800 HM/850 HM/900 Tr 800×7 Tr 850×7 Tr 900×7 800 850 900 925 975 1030 1000 1060 1120 112 118 125 60 70 70 34 38 38 — — — — — — — — — — — — — — — — — — — — — MS/750 MS/850 MS/900 HM/950 HM/1000 HM/1060 Tr 950×8 Tr 1000× 8 Tr 1060× 8 950 1000 1060 1080 1140 1210 1170 1240 1300 125 125 125 70 70 70 38 38 38 — — — — — — — — — — — — — — — — — — — — — MS/950 MS/1000 MS/1000 ????? www.bzfxw.com ???? JB/T 7919.3- 1999 8 表 2 KML、HML 型锁紧螺母 mm 尺 寸 参 考 尺 寸 锁紧螺母 型 号 螺 纹 d d1 d2 B b h d6 g r1max l s dp 适用的锁紧 垫圈型号 适用的锁 紧卡型号 KML 24 KML 26 KML 28 KML 30 KML 32 KML 34 KML 36 KML 38 KML 40 HML 41 HML 43 HML 44 HML 47 HML 48 HML 52 HML 56 HML 60 HML 64 HML 68 HML 69 HML 72 HML 73 HML 76 HML 77 HML 80 HML 82 HML 84 HML 86 HML 88 HML 90 HML 92 HML 94 HML 96 HML 98 M 120×2 M 130×2 M 140×2 M 150×2 M 160×3 M 170×3 M 180×3 M190×3 M200×3 Tr205×4 Tr215×4 Tr220×4 Tr235×4 Tr240×4 Tr260×4 Tr280×4 Tr300×4 Tr320×5 Tr340×5 Tr345×5 Tr360×5 Tr365×5 Tr380×5 Tr385×5 Tr400×5 Tr410×5 Tr420×5 Tr430×5 Tr440×5 Tr450×5 Tr460×5 Tr470×5 Tr480×5 Tr490×5 120 130 140 150 160 170 180 190 200 205 215 220 235 240 260 280 300 320 340 345 360 365 380 385 400 410 420 430 440 450 460 470 480 490 135 145 155 170 180 190 200 210 222 232 242 242 262 270 290 310 336 356 376 384 394 404 422 422 442 452 462 472 490 490 510 510 530 550 145 155 165 180 190 200 210 220 240 250 260 260 280 290 310 330 360 380 400 410 420 430 450 450 470 480 490 500 520 520 540 540 560 580 20 21 22 24 25 26 27 28 29 30 30 30 34 34 34 38 42 42 45 45 45 48 48 48 52 52 52 52 60 60 60 60 60 60 12 12 14 14 16 16 18 18 18 18 20 20 20 20 20 24 24 24 24 28 28 28 28 28 28 32 32 32 32 32 32 32 36 36 5 5 6 6 7 7 8 8 8 8 9 9 9 9 10 10 12 12 12 13 13 13 14 14 14 14 14 14 15 15 15 15 15 15 121 131 141 151 161.5 171.5 181.5 191.5 201.5 207 217 222 237 242 262 282 302 322.5 342.5 347.5 362.5 367.5 382.5 387.5 402.5 412.5 422.5 432.5 442.5 452.5 462.5 472.5 482.5 492.5 135 145 153 168 176 186 194 204 224 234 242 242 262 270 290 310 336 356 376 384 394 404 422 422 442 452 462 472 490 490 510 510 530 550 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 — — — — — — — — — — — 12 — 15 15 15 15 15 15 — 15 — 18 — 18 — 18 — 21 — 21 — 21 — — — — — — — — — — — — M 6 — M 8 M 8 M 8 M 8 M 8 M 8 — M 8 — M 10 — M 10 — M 10 — M 12 — M 12 — M 12 — — — — — — — — — — — — 229 — 253 273 293 316 335 355 — 374 — 398 — 418 — 438 — 462 — 482 — 502 — MBL 24 MBL 26 MBL 28 MBL 30 MBL 32 MBL 34 MBL 36 MBL 38 MBL 40 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — MSL 44 — MSL 48 MSL 48 MSL 56 MSL 60 MSL 64 MSL 64 — MSL 72 — MSL 76 — MSL 76 — MSL 84 — MSL 88 — MSL 88 — MSL 96 — JB/T 7919.3- 1999 9 表 2(完) mm 尺 寸 参 考 尺 寸 锁紧螺母 型 号 螺 纹 d d1 d2 B b h d6 g r1max l s dp 适用的锁紧 垫圈型号 适用的锁 紧卡型号 HML/500 HML/520 HML/530 HML/540 HML/560 HML/600 HM/630 HM/670 HML/710 HML/750 HML/800 HML/850 HML/900 HML/950 HML/1000 HML/1060 HML/1120 Tr500×5 Tr520×5 Tr530×6 Tr540×6 Tr560×6 Tr600×6 Tr630×6 Tr670×6 Tr710×7 Tr750×7 Tr800×7 Tr850×7 Tr900×7 Tr950×8 Tr1000× 8 Tr1060× 8 Tr1120× 8 500 520 530 540 560 600 630 670 710 750 800 850 900 950 1000 1060 1120 550 570 590 590 610 660 690 740 780 820 870 925 975 1025 1085 1145 1205 580 600 630 630 650 700 730 780 830 870 920 980 1030 1080 1140 1200 1260 68 68 68 68 75 75 75 80 90 90 90 90 100 100 100 100 100 36 36 40 40 40 40 45 45 50 55 55 60 60 60 60 60 60 15 15 20 20 20 20 20 20 25 25 25 25 25 25 25 25 25 502.5 523 — 543 — — — — — — — — — — — — — 550 570 — 590 — — — — — — — — — — — — — 1 1 — 1 — — — — — — — — — — — — — 21 — — — — — — — — — — — — — — — — M12 — — — — — — — — — — — — — — — — 522 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — MSL96 — MSL/530 — MSL/560 MSL/560 MSL/630 MSL/670 MSL/710 MSL/750 MSL/750 MSL/850 MSL/850 MSL/950 MSL/1000 MSL/1000 MSL/1000 7. 2 锁紧垫圈尺寸见表 3、表 4。 表 3 MB、MBA型锁紧垫圈 mm 锁紧垫圈型号 尺 寸 参考尺寸 MB型 MBA型 d3 d4 d5 f1 M f B1 B2 Nmin r2 MB 00 MB 01 MB 02 MBA 00 MBA 01 MBA 02 10 12 15 13.5 17 21 21 25 28 3 3 4 8.5 10.5 13.5 3 3 4 1 1 1 — — 2.5 9 11 11 — — 1 MB 03 MB 04 MB 05 MB 06 MB 07 MBA 03 MBA 04 MBA 05 MBA 06 MBA 07 17 20 25 30 35 24 26 32 38 44 32 36 42 49 57 4 4 5 5 6 15.5 18.5 23.0 27.5 32.5 4 4 5 5 5 1 1 1.25 1.25 1.25 4 4 4 4 4 11 11 13 13 13 — — — — — MB 08 MB 09 MB 10 MB 11 MB 12 MBA 08 MBA 09 MBA 10 MBA 11 MBA 12 40 45 50 55 60 50 56 61 67 73 62 69 74 81 86 6 6 6 8 8 37.5 42.5 47.5 52.5 57.5 6 6 6 7 7 1.25 1.25 1.25 1.5 1.5 5 5 5 5 6 13 13 13 17 17 — — — — 1.2 ????? www.bzfxw.com ???? JB/T 7919.3- 1999 10 表 3(完) mm 锁紧垫圈型号 尺 寸 参考尺寸 MB型 MBA型 d3 d4 d5 f1 M f B1 B2 Nmin
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