双排球式回转支撑
双排球转盘轴承由于有上下两排钢球，故可同时承受径向力，轴向力和倾覆力矩。为适应各力矩之间的不同比例，接触角由很小到90度不等。当钢球的分布圆直径相同时，每排钢球的总承载能力与所选用的钢球直径成正比，因此，在支承截面高度相同的情况下同时承受轴向力和倾覆力矩时，双排球轴承能更好地利用截面尺寸。
双排异径球式回转支承的轴向、径向尺寸都比较大，结构紧固。特别适用于要求中等以上直径的塔式起重机，汽车起重机等装卸机械上。
外齿
AA20.0950.
AA20.1060.
AA20.1180.
AA20.1320.
AA20.1500.
AA30.1320.
AA30.1500.
AA30.1700.
AA30.1900.
AA30.2120.
AA40.1900.
AA40.2120.
AA40.2360.
AA40.2650.
AA40.3000.
AA50.2650.
AA50.3000.
AA50.3350.
AA50.3550.
AA50.3750.
内齿
BA20.0950.
BA20.1060.
BA20.1180.
BA20.1320.
BA20.1500.
BA30.1320.
BA30.1500.
BA30.1700.
BA30.1900.
BA30.2120.
BA40.1900.
BA40.2120.
BA40.2360.
BA40.2650.
BA40.3000.
BA50.2650.
BA50.3000.
BA50.3350.
BA50.3550.
BA50.3750.
EGDBI98.80-78.40-8.88 IGDBI108.00-87.17-7.56 IGDBI121.00-98.40-8.75
EGDBM 616.384.106 EGDBM 676.444.106 EGDBM 746.514.106
EGDBM 826.594.106 EGDBM 1042.758.124 EGDBM 942.658.124
EGDBM 1142.858.124 EGDBM 1262.978.124 EGDBM 1426.1074.160
EGDBM 1576.1224.160 EGDBM 1776.1424.160 EGDBM 1976.1624.160
EGDBM 2215.1785.190 EGDBM 2455.2025.190 EGDBM 2715.2285.190
EGDBM 3015.2585.190 EGDBM 3428.2872.226 EGDBM 3828.3272.226
EGDBM 4278.3722.226 EGDBM 4778.4222.226 IGDBM 616.384.106
IGDBM 676.444.106 IGDBM 746.514.106 IGDBM 826.594.106
IGDBM 942.658.124 IGDBM 1042.758.124 IGDBM 1142.858.124
IGDBM 1262.978.124 IGDBM 1426.1074.160 IGDBM 1576.1224.160
IGDBM 1776.1424.160 IGDBM 1976.1624.160 IGDBM 2215.1785.190
IGDBM 2455.2025.190 IGDBM 2715.2285.190 IGDBM 3015.2585.190
IGDBM 3428.2872.226 IGDBM 3828.3272.226 UGDBM 616.384.106
IGDBM 4778.4222.226 IGDBM 4278.3722.226 UGDBM 676.444.106
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