6.11.1 Unless otherwise specified, bearings and bearing housings shall be designed for oil lubrication using a mineral (hydrocarbon) oil in accordance with ASTM D4304 or ISO 8068 type AR.
除非另有规定,轴承和轴承箱应设计为使用符合 ASTM D4304 或 ISO 8068 AR 型标准的矿物(碳氢化合物)油进行油润滑。
6.11.2 The operation and maintenance manual shall describe how the lubrication system circulates oil.
操作和维护手册应说明润滑系统如何循环润滑油。
6.11.3 If specified, provisions shall be made for either pure oil-mist or purge oil-mist lubrication (see 6.10.2.10 for requirements).
如有规定,应提供纯吹扫或纯油雾润滑(要求见 6.10.2.10)。
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解释:现在除了电机轴承,泵轴承基本没有脂润滑了。
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6.11.4 If specified, rolling-element bearings shall be grease-lubricated in accordance with the following:
如有规定,滚动体轴承必须按照下列规定进行油脂润滑:
a) grease life (re-lubrication interval) shall be estimated using the method recommended by the bearing manufacturer or an alternative method approved by the purchaser;
润滑脂寿命(再润滑间隔)应采用轴承制造商推荐的方法或买方批准的替代方法进行估算;
b) grease lubrication shall not be used if the estimated grease life is less than 2000 h;
如果油脂的估计寿命少于 2000 小时,则不得使用油脂润滑;
c) if the estimated grease life is 2000 h or greater but less than 25,000 h, provision shall be made for re- greasing the bearings in service and for the effective discharge of old or excess grease, and the vendor shall advise the purchaser of the required re-greasing interval;
如果润滑脂的估计寿命为 2000 小时或更长,但少于 25,000 小时,则应规定轴承在使用过程中应重新加注润滑脂,并有效地排出旧的或多余的润滑脂,卖方应告知买方所要求的重新加注润滑脂的间隔时间;
d) if the estimated grease life is 25,000 h or more, grease nipples or any other system for the addition of grease in service shall not be fitted.
如果润滑脂的预计使用寿命为 25 000 小时或更长,则不得安装润滑脂嘴或任何其他在使用中添加润滑脂的系统。
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解释:过量的油脂会影响轴承的寿命,影响轴承散热。
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6.11.5 The purchaser shall specify whether synthetic oil shall be used. If specified, the purchaser shall specify the oil type. The vendor shall ensure that bearing-housing internal paint, if used, is compatible with the specified oil.
卖方应说明是否使用合成机油。如果指定,卖方应说明机油类型。如果使用,卖方应确保轴承箱内部涂料与指定润滑油兼容。
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解释:轴承箱内部一般要喷防腐漆的,应该注意防腐漆应与润滑油兼容。
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