{
 "std": "ГОСТ 13940-86",
 "name": "Кольца пружинные упорные плоские наружные концентрические и канавки для них. Конструкция и размеры",
 "name_en": "Retaining spring flat concentric rings for shafts and grooves for them. Dimensions",
 "status": "действует, ограничений применения в России нет (карточка Росстандарта)",
 "status_src": "https://protect.gost.ru/gost/details/32c3ae95-00db-4fb4-8276-9c4298141a73",
 "intro": "01.01.1988",
 "replaces": "ГОСТ 13940-68",
 "approved": "Постановление Госстандарта СССР от 20.12.1986 № 4446",
 "amendments": [
  "Изменение № 1, ИУС 11-1988 (учтено в издании)"
 ],
 "edition": "переиздание, сентябрь 1988 г., с Изменением № 1, Издательство стандартов",
 "oks": "21.160",
 "okp": "45 9830",
 "tech_req": "ГОСТ 13944-86",
 "units": "мм, F_kN: допускаемая осевая нагрузка, кН, mass_1000_kg: теоретическая масса 1000 стальных колец, кг (справочное приложение)",
 "columns": [
  "d",
  "d2",
  "d2_tol",
  "d3",
  "s",
  "b",
  "l_approx",
  "d1",
  "d1_tol",
  "m_H13",
  "h_min",
  "F_kN",
  "mass_1000_kg"
 ],
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   3.5,
   3.0,
   10.5,
   14.0,
   170.0,
   "−0,63",
   3.4,
   7.5,
   338,
   139
  ],
  [
   180,
   172.0,
   "+0,63/−1,26",
   3.5,
   3.0,
   10.5,
   14.0,
   175.0,
   "−0,63",
   3.4,
   7.5,
   347,
   143
  ],
  [
   185,
   177.0,
   "+0,63/−1,26",
   3.5,
   3.0,
   10.5,
   14.0,
   180.0,
   "−0,63",
   3.4,
   7.5,
   358,
   147
  ],
  [
   190,
   182.0,
   "+0,72/−1,44",
   3.5,
   3.0,
   10.5,
   14.0,
   185.0,
   "−0,72",
   3.4,
   7.5,
   368,
   151
  ],
  [
   200,
   192.0,
   "+0,72/−1,44",
   3.5,
   3.0,
   10.5,
   14.0,
   195.0,
   "−0,72",
   3.4,
   7.5,
   387,
   159
  ]
 ],
 "notes": [
  "Размер l допускается корректировать при изготовлении колец.",
  "Осевая нагрузка определена для таких условий: рабочие кромки кольца острые, углы у основания и наружная кромка канавки без скругления или фаски, закрепляемая деталь установлена на валу без зазора, прилегающая к кольцу поверхность закрепляемой детали без скругления или фаски, предел прочности материала вала не менее 300 Н/мм².",
  "α = 60° для d ≤ 58 мм, α = 90° для d ≥ 60 мм",
  "В издании 1988 г. для d 8 напечатано 0,18 кг. По размерам кольца (d₂ 7,2, s 1,0, b 1,7) расчётная масса около 0,35 кг, соседние размеры 0,17 и 0,38 кг. Вероятна опечатка издания, в таблице оставлено значение стандарта."
 ],
 "source": "КРЕПИОН, krepion.ru, по официальному изданию стандарта",
 "url": "https://krepion.ru/gost/13940-86"
}