泵用轴承中文.ppt

Abrasive Wear of Polymers - Rotary Drum Abrasion Test 60-grit coarse sand paper surface ThorPlas Dry-Run Capability 75mm (3”) carbon steel shaft / 0.5 HP motor Velocity: 1800 rpm (7.2m/s or 1410FPM) Pressure: 0.034MPa (5 Psi) Dry-run capability exceeds soft elastomer and rubber bearings, many rigid polymers, and metals Powertech Wear Testing - Comparison to Other Bearings Powertech Testing -  ThorPlas Bearing After Test No measurable wear, or damage after dry, edge-loading, and wet tests Wet Test Bearing Fitting Installation ThorPlas bearings are normally installed with an interference fit Freeze installations are preferred ThorPlas can also be installed using a press fit For high pressure applications, with higher interference, cooling prior to press fit is helpful Bonding of the material is NOT recommended ThorPlas Features/Benefits Max. working pressure to 4500 psi Continuous service up to 80°C (175°F) in water and 110°C (230°F) dry Improved chemical resistance vs. Thordon Excellent wear performance in non-abrasive environments Not as good as Thordon in abrasives, but better than bronze/most other non-metallics ThorPlas Features/Benefits Low friction Self lubricating - no oil or grease OK for dry start up in vertical pump bearings Low thermal expansion Low water absorption Key Applications ‘Full form’ alternative to TRAXL for application pressures from 2,000 to 4500 psi Applications requiring higher temperature and/or higher chemical resistance than Thordon provides 设计准则 轴承外径、内径、长度 润滑 研磨程度 工作压力 轴材料为不锈钢或非腐蚀性材料 安装方法 参考 Berman Brothers – Grapple Pivot Bushings Georgia Power – Linkage Bushings CHI Energy – Pump Bearing NYSEG – Wicket Gate Bearings Rock Island Dam – Sluice Gate Rollers South America, Spain Russia ThorPlas Grapple ThorPlas Grapple 金属壳体轴承 可在任何赛龙等级使用 减小初始间隙 比相同形式的赛龙等级成本高 赛龙优点 可在室内加工，维修方便 轴承可以压力或粘结安装 取决于每个泵的情况 计算机尺寸计算程序使加工尺寸简单化 设计时考虑如下 等级选择 SXL Composite (GM2401) XL Metal-backed 干起动/运转 油或水润滑 Ebara 实验纪录 Thordon dry run test 干起动运转间隙计算 赛龙