working double hoursとは 意味・読み方・使い方

To provide a double-row conical roller bearing capable of enhancing the rotational accuracy and rotating performance of the bearing and decreasing the man-hours for installation by eliminating the factors to cause a drop of the accuracy of its retainer due to tightening, in which no tightening of the retainer by press working is conducted.例文帳に追加

プレス加工による保持器の加締めを行わずに、加締めによる保持器の精度が低下する要因を排除することにより、軸受の回転精度、回転性能の向上を図るとともに、組み付け工数を減少させる複列円錐ころ軸受を提供する。 - 特許庁