轴承参数

需维护的径向球面滑动轴承
尺寸标准公制轴承:
ISO 12240-1:1998
  • GE series → dimension series E
    (GEM series: non-standard (extended) inner ring width, otherwise same dimensions as GE series)
  • GEH series → dimension series G
  • GEG series → dimension series W

GEZ 系列中的英制轴承:
ANSI/ABMA Std. 22.2-1988(GEZM 系列的内圈宽度除外)

公差
GE、GEG、GEH 和 GEM 系列中的公制轴承:
ISO 12240-1:1998(table 1

GEZ、GEZH 和 GEZM 系列中的英制轴承:
ANSI/ABMA Std. 22.2-1988(table 2
外圈公差适用于断裂和表面处理之前的条件。
相应地,内圈公差适用于未经表面处理的内圈。

径向游隙

Normal as standard
Check availability of C2 (smaller) or C3 (larger) prior to ordering.


Values:

metric bearings:
ISO 12240-1:1998 (table 3)

inch bearings (table 4)


材料

Inner and outer rings: through-hardened, ground and phosphated bearing steel; sliding contact surfaces are treated with a running-in lubricant

Seals (table 5)


允许工作温度范围

Open bearing: -50 to +200 °C (-60 to +390 °F);
reduced load carrying capacity at temperatures above +120 °C (+250 °F);
bearings for higher temperature applications up to 300 °C, can be manufactured on request


Sealed bearings (limited by the seal material):

  • –20 to +80 °C (-5 to +175 °F) for inch RS seals
  • –30 to +130 °C (-20 to +265 °F) for metric RS seals with a bore diameter d < 320 mm
  • –35 to +100 °C (-30 to +210 °F) for metric RS seals with a bore diameter d ≥ 320 mm
  • –55 to +110 °C (-65 to +230 °F) for LS seals

同时还必须考虑到用于润滑轴承的润滑脂的工作温度范围。

SKF Explorer钢/钢径向球面滑动轴承
尺寸标准公制轴承:
ISO 12240-1:1998
  • GE series → dimension series E
    (GEM series: non-standard (extended) inner ring width, otherwise same dimensions as GE series)
  • GEH series → dimension series G

GEZ 系列中的英制轴承:
ANSI/ABMA Std. 22.2-1988(GEZM 系列的内圈宽度除外)

公差
GE、GEH 和 GEM 系列中的公制轴承:
ISO 12240-1:1998(table 1

GEZ、GEZH 和 GEZM 系列中的英制轴承:
ANSI/ABMA Std. 22.2-1988(table 2
外圈公差适用于断裂和表面处理之前的条件。
相应地,内圈公差适用于未经表面处理的内圈。

径向游隙

Normal as standard
Check availability of C2 (smaller) or C3 (larger) prior to ordering.


Values:

metric bearings:
ISO 12240-1:1998 (table 3)

inch bearings (table 4)


材料

Inner and outer rings: high grade carbon chromium steel, hardened, ground and phosphated;

LS-seals: acrylonitrile butadiene rubber (NBR) (table 5)


允许工作温度范围

-45 to +110 °C (-50 to +230 °F)



免维护径向球面滑动轴承
尺寸标准公制轴承:
ISO 12240-1:1998
  • GE series → dimension series E
  • GEC series → dimension series C
  • GEH series → dimension series G
  • GEP series → dimension series H

GEZ 系列中的英制轴承:
ANSI/ABMA Std. 22.2-1988

公差
公制轴承:
ISO 12240-1:1998(table 1

英制轴承:
ANSI/ABMA Std. 22.2-1988(table 2
对于 TX 和 TXG3 设计,外圈公差适用于断裂前的尺寸。

径向内部游隙,预载荷

Steel/PTFE sintered bronze sliding contact surface: (table 3)

Steel/PTFE fabric sliding contact surface, metric sizes: (table 4)
Steel/PTFE fabric sliding contact surface, inch sizes: (table 5)

Steel/PTFE FRP sliding contact surface: (table 6)


Bearings with sliding contact surface combination steel/PTFE sintered bronze 对于钢/PTFE 编织材料并且 d ≤ 110 mm 或 d ≤ 4 in.的轴承,采用内部间隙还是轻微预载荷(负游隙)取决于它们的设计。 因此,对这些轴承只能提供轴承内部游隙的上限值。 下限值必须通过预载荷(负游隙)产生的摩擦力矩来评估。

材料

Bearing rings and lining (table 7)

Seals (table 8)

允许工作温度范围
Table 7
若要充分利用轴承的承载能力,则温度范围必须缩小。 根据应用类型,可以短时间内在超过温度上限值的条件下运行。 有关更多信息,请联系 SKF 应用工程服务部门。


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