Angular Контакты
Ball Bearings
718 / 719 / 70 / 72 Series | 15° & 25° Контакты Angle | 35–280mm Bore | P5/P4/P2 Grade
Precision single-row angular contact шарикоподшипники engineered for machine tool spindles, высокоскоростной motor валs, and precision rotary equipment. Universally ground for interchangeable DB, DF, and DT matched set mounting. Доступно в standard and ultra-высокоскоростной (H/HQ1) variants with ceramic hybrid options.
Precision Радиально-упорные шарикоподшипники for Machine Tool Spindles
Luoyang Songju precision angular contact шарикоподшипники are manufactured in 718, 719, 70, and 72 dimensional series to ISO standards. Each bearing is universally face-ground, enabling any combination of DB (back-to-back), DF (face-to-face), or DT (tandem) mounting without the need for shimming or matched-set limitations.
Доступно в P5 (ABEC-5), P4 (ABEC-7), and P2 (ABEC-9) класс точностиs, наши радиально-упорные подшипники обеспечивают точность вращения, жёсткость и скоростные возможности для ответственных шпиндельных применений in CNC обрабатывающий центрs, grinding machines, turning centers, and высокоскоростной milling spindles.
Стандартные углы контакта 15° (суффикс C) and 25° (суффикс AC) доступны для всех серий. The 15° вариант отдаёт приоритет скоростным возможностям — ideal for высокоскоростной spindles — while the 25° variant обеспечивает enhanced axial жёсткость for тяжёлое резание and thrust load applications.
Контакты Angle Руководство по выбору
15° (C) — High Speed
Lower axial жёсткость, superior speed performance. Идеально для высокоскоростной milling spindles, grinding spindles, and applications where speed is the priority.
25° (AC) — High Жёсткость
Higher осевая нагрузка capacity, increased system жёсткость. Best for turning centers, тяжёлый machining spindles, and applications with significant thrust loads.
Universal Ground
All bearings are precision face-ground for universal matching. Mix and match any two or more bearings in DB, DF, or DT arrangement without measuring or shimming.
Four Dimensional Series Available
From ultra-light 718 to тяжёлый 72 series — select the right поперечное сечение for your spindle design requirements
718 Series
Ultra-thin поперечное сечение for space-limited spindle designs. Optimal for applications where radial space is constrained but high precision is essential.
719 Series
лёгкие поперечное сечение with excellent speed-to-load ratio. The most popular choice for general machine tool spindle bearing arrangements.
70 Series
средние поперечное сечение providing the optimal balance of грузоподъёмность and speed. Most versatile series for universal machine tool applications.
72 Series
Heavy поперечное сечение for maximum грузоподъёмность and жёсткость. Предназначено для тяжёлый machining spindles with high cutting forces.
Standard & Ultra-High-Speed Variants
Every series is available in multiple performance grades to match your exact speed and precision requirements
Standard Series
718 / 719 / 70 / 72 series with steel balls and standard cage. Grade P5, P4, or P2. Пластичная смазка or масляная смазка. Reliable performance for general CNC spindle applications.
H Series — High Speed
Optimized internal design with smaller ball diameter for reduced centrifugal force at high RPM. 30–40% higher speed ratings than standard series. Designated by "H" prefix (e.g. H71908, H7014).
HQ1 Series — Ultra Speed
Premium ultra-высокоскоростной variant with ceramic Si₃N₄ balls (hybrid). 50–70% higher speed ratings than standard. Lowest рабочая температура. Designated by "H" prefix + "HQ1" suffix (e.g. H71908/HQ1).
радиально-упорный шарикоподшипник Model Параметры
Complete model list covering 718, 719, 70, and 72 series. α=15° (C) for высокоскоростной applications and α=25° (AC) for high-жёсткость applications. Индивидуальные размеры доступны по request.
| Bearing Model | d (mm) | D (mm) | B (mm) | α=15° (C) — High Speed | α=25° (AC) — High Жёсткость | ||||
|---|---|---|---|---|---|---|---|---|---|
| Cr (kN) | C0r (kN) | 脂/油 (r/min) | Cr (kN) | C0r (kN) | 脂/油 (r/min) | ||||
| 71807 | 35 | 47 | 7 | 4.6 | 5.5 | 26000 / 40000 | 4.3 | 5.2 | 24000 / 38000 |
| 71907 | 35 | 55 | 10 | 11 | 10.9 | 26000 / 40000 | 10.4 | 10.3 | 20000 / 34000 |
| H71907 | 35 | 55 | 10 | 7.7 | 5.4 | 36000 / 53000 | 7.4 | 5.1 | 30000 / 45000 |
| H71907/HQ1 | 35 | 55 | 10 | 7.7 | 5.4 | 40000 / 60000 | 7.4 | 5.1 | 34000 / 50000 |
| 7007 | 35 | 62 | 14 | 19.3 | 17.5 | 20000 / 34000 | 18.3 | 16.6 | 19000 / 32000 |
| H7007 | 35 | 62 | 14 | 11.2 | 7.9 | 34000 / 50000 | 10.7 | 7.5 | 30000 / 45000 |
| H7007/HQ1 | 35 | 62 | 14 | 11.2 | 7.9 | 38000 / 56000 | 10.7 | 7.5 | 34000 / 50000 |
| 71808 | 40 | 52 | 7 | 4.8 | 6.2 | 24000 / 38000 | 4.5 | 5.8 | 20000 / 34000 |
| 71908 | 40 | 62 | 12 | 14 | 14.2 | 20000 / 34000 | 13.3 | 13.5 | 18000 / 30000 |
| H71908 | 40 | 62 | 12 | 9.8 | 7 | 30000 / 45000 | 9.3 | 6.6 | 26000 / 40000 |
| H71908/HQ1 | 40 | 62 | 12 | 9.8 | 7 | 34000 / 50000 | 9.3 | 6.6 | 28000 / 43000 |
| 7008 | 40 | 68 | 15 | 19.9 | 19.1 | 19000 / 32000 | 18.9 | 18.2 | 17000 / 28000 |
| H7008 | 40 | 68 | 15 | 12.5 | 9.1 | 28000 / 43000 | 11.1 | 8.6 | 24000 / 38000 |
| H7008/HQ1 | 40 | 68 | 15 | 12.5 | 9.1 | 34000 / 50000 | 11.1 | 8.6 | 28000 / 43000 |
| 71809 | 45 | 58 | 7 | 4.9 | 6.7 | 20000 / 34000 | 4.6 | 6.3 | 18000 / 30000 |
| 71909 | 45 | 68 | 12 | 14.7 | 16.1 | 18000 / 30000 | 13.9 | 15.2 | 17000 / 28000 |
| H71909 | 45 | 68 | 12 | 10.3 | 7.7 | 26000 / 40000 | 9.7 | 7.3 | 22000 / 36000 |
| H71909/HQ1 | 45 | 68 | 12 | 10.3 | 7.7 | 28000 / 43000 | 9.7 | 7.3 | 26000 / 40000 |
| 7009 | 45 | 75 | 16 | 26.7 | 25.3 | 17000 / 28000 | 25.4 | 24.1 | 16000 / 26000 |
| H7009 | 45 | 75 | 16 | 13.1 | 10.2 | 24000 / 38000 | 12.5 | 9.7 | 22000 / 36000 |
| H7009/HQ1 | 45 | 75 | 16 | 13.1 | 10.2 | 28000 / 43000 | 12.5 | 9.7 | 26000 / 40000 |
Showing bore range 35–45mm. View complete table (35–280mm bore, 150+ models) ↓
Full Model Range — Continued (Bore: 45–200mm+)
| Bearing Model | d | D | B | α=15° — Cr / C0r / Speed | α=25° — Cr / C0r / Speed | ||||
|---|---|---|---|---|---|---|---|---|---|
| 71810 | 50 | 65 | 7 | 7.4 | 10 | 18000 / 30000 | 6.9 | 9.5 | 16000 / 26000 |
| 71910 | 50 | 72 | 12 | 19 | 21.2 | 17000 / 28000 | 17.9 | 20.1 | 15000 / 24000 |
| H71910 | 50 | 72 | 12 | 13.2 | 10.2 | 22000 / 36000 | 12.5 | 9.5 | 19000 / 32000 |
| H71910/HQ1 | 50 | 72 | 12 | 13.2 | 10.2 | 26000 / 40000 | 12.5 | 9.5 | 22000 / 36000 |
| 7010 | 50 | 80 | 16 | 27.6 | 27.5 | 16000 / 26000 | 26.2 | 26.2 | 15000 / 24000 |
| H7010/HQ1 | 50 | 80 | 16 | 15.5 | 12.2 | 24000 / 38000 | 14.8 | 11.5 | 20000 / 34000 |
| 71811 | 55 | 72 | 9 | 10.2 | 13.8 | 16000 / 26000 | 9.6 | 13.1 | 15000 / 24000 |
| 71911 | 55 | 80 | 13 | 23.7 | 27.4 | 15000 / 24000 | 22.4 | 26 | 14000 / 22000 |
| H71911 | 55 | 80 | 13 | 16.2 | 12.5 | 19000 / 32000 | 15.2 | 11.8 | 16000 / 26000 |
| H71911/HQ1 | 55 | 80 | 13 | 16.2 | 12.5 | 22000 / 36000 | 15.2 | 11.8 | 22000 / 36000 |
| 7011 | 55 | 90 | 18 | 36.7 | 37.1 | 14000 / 22000 | 34.8 | 35.3 | 13000 / 20000 |
| H7011/HQ1 | 55 | 90 | 18 | 17.2 | 14.5 | 22000 / 36000 | 16.2 | 13.8 | 19000 / 32000 |
| 71812 | 60 | 78 | 10 | 13.4 | 18 | 15000 / 24000 | 12.6 | 17 | 14000 / 22000 |
| 71912 | 60 | 85 | 13 | 24.8 | 30.3 | 14000 / 22000 | 23.3 | 28.7 | 13000 / 20000 |
| H71912 | 60 | 85 | 13 | 16.5 | 13.8 | 18000 / 30000 | 15.8 | 13.2 | 15000 / 24000 |
| H71912/HQ1 | 60 | 85 | 13 | 16.5 | 13.8 | 19000 / 32000 | 15.8 | 13.2 | 20000 / 34000 |
| 7012 | 60 | 95 | 18 | 37.8 | 40 | 14000 / 22000 | 35.8 | 38 | 12000 / 19000 |
| H7012/HQ1 | 60 | 95 | 18 | 17.2 | 15.2 | 20000 / 34000 | 16.2 | 14.5 | 18000 / 30000 |
| 71813 | 65 | 85 | 10 | 13.4 | 18.8 | 14000 / 22000 | 12.6 | 17.8 | 13000 / 20000 |
| 71913 | 65 | 90 | 13 | 25.1 | 31.9 | 13000 / 20000 | 23.6 | 30.2 | 12000 / 19000 |
| H71913 | 65 | 90 | 13 | 16.8 | 14.5 | 17000 / 28000 | 16.2 | 13.8 | 15000 / 24000 |
| H71913/HQ1 | 65 | 90 | 13 | 16.8 | 14.5 | 19000 / 32000 | 16.2 | 13.8 | 17000 / 28000 |
| 7013 | 65 | 100 | 18 | 38.9 | 42.9 | 13000 / 20000 | 36.8 | 40.7 | 11000 / 18000 |
| H7013/HQ1 | 65 | 100 | 18 | 20.2 | 18.5 | 19000 / 32000 | 19.2 | 17.5 | 15000 / 24000 |
| 71814 | 70 | 90 | 10 | 13.8 | 20.3 | 13000 / 20000 | 13 | 19.1 | 12000 / 19000 |
| 71914 | 70 | 100 | 16 | 34.5 | 43.4 | 12000 / 19000 | 32.6 | 41.2 | 11000 / 18000 |
| H71914 | 70 | 100 | 16 | 20.8 | 17.8 | 16000 / 26000 | 19.8 | 16.8 | 13000 / 20000 |
| H71914/HQ1 | 70 | 100 | 16 | 20.8 | 17.8 | 19000 / 32000 | 19.8 | 16.8 | 17000 / 28000 |
| 7014 | 70 | 110 | 20 | 49.9 | 55.5 | 12000 / 19000 | 47.2 | 52.7 | 10000 / 17000 |
| H7014/HQ1 | 70 | 110 | 20 | 24.2 | 21.5 | 18000 / 30000 | 22.5 | 20.2 | 15000 / 24000 |
| 71815 | 75 | 95 | 10 | 14.2 | 21.7 | 12000 / 19000 | 13.3 | 20.5 | 11000 / 18000 |
| 71915 | 75 | 105 | 16 | 25 | 45.6 | 11000 / 18000 | 33 | 43.2 | 9500 / 16000 |
| H71915 | 75 | 105 | 16 | 21.8 | 19.2 | 15000 / 24000 | 20.5 | 18.2 | 13000 / 20000 |
| H71915/HQ1 | 75 | 105 | 16 | 21.8 | 19.2 | 17000 / 28000 | 20.5 | 18.2 | 15000 / 24000 |
| 7015 | 75 | 115 | 20 | 51.3 | 59.2 | 11000 / 18000 | 48.5 | 56.2 | 9500 / 16000 |
| 71816 | 80 | 100 | 10 | 14.5 | 23.1 | 11000 / 18000 | 13.6 | 21.8 | 9500 / 16000 |
| 71916 | 80 | 110 | 16 | 35.5 | 47.8 | 10000 / 17000 | 33.5 | 45.3 | 9000 / 15000 |
| H71916/HQ1 | 80 | 110 | 16 | 22.5 | 20.8 | 16000 / 26000 | 21.2 | 19.5 | 14000 / 24000 |
| 7016 | 80 | 125 | 22 | 61.6 | 70.4 | 10000 / 17000 | 58.3 | 66.9 | 9000 / 15000 |
| H7016/HQ1 | 80 | 125 | 22 | 34.2 | 32.8 | 15000 / 24000 | 32.5 | 31.5 | 13000 / 20000 |
| 71817 | 85 | 110 | 13 | 21.5 | 32.2 | 10000 / 17000 | 20.2 | 30.5 | 9000 / 15000 |
| 71917 | 85 | 120 | 18 | 46.5 | 61.9 | 9500 / 16000 | 43.8 | 58.6 | 8500 / 14000 |
| H71917/HQ1 | 85 | 120 | 18 | 26.2 | 24.2 | 15000 / 24000 | 24.8 | 22.8 | 13000 / 20000 |
| 7017 | 85 | 130 | 22 | 63.3 | 75 | 9500 / 16000 | 59.9 | 71.3 | 8500 / 14000 |
| H7017/HQ1 | 85 | 130 | 22 | 35.2 | 35.2 | 14000 / 22000 | 33.2 | 33.5 | 12000 / 19000 |
| 71818 | 90 | 115 | 13 | 21.7 | 33.5 | 9500 / 16000 | 20.4 | 31.6 | 8500 / 14000 |
| 71918 | 90 | 125 | 18 | 47.2 | 64.8 | 9000 / 15000 | 44.5 | 61.4 | 8000 / 13000 |
| H71918/HQ1 | 90 | 125 | 18 | 27.2 | 26.2 | 15000 / 24000 | 25.5 | 24.5 | 13000 / 20000 |
| 7018 | 90 | 140 | 24 | 66.9 | 84 | 9000 / 15000 | 63.2 | 79.7 | 8000 / 13000 |
| H7018/HQ1 | 90 | 140 | 24 | 36.5 | 38.2 | 13000 / 20000 | 34.2 | 36.2 | 11000 / 18000 |
| 71819 | 95 | 120 | 13 | 21.9 | 34.7 | 9000 / 15000 | 20.6 | 32.8 | 8500 / 14000 |
| 71919 | 95 | 130 | 18 | 47.9 | 67.8 | 9000 / 15000 | 45.2 | 64.1 | 8000 / 13000 |
| H71919/HQ1 | 95 | 130 | 18 | 27.2 | 26.8 | 14000 / 22000 | 25.8 | 25.5 | 13000 / 20000 |
| 7019 | 95 | 145 | 24 | 79.1 | 97.6 | 8500 / 14000 | 74.8 | 92.7 | 7500 / 12000 |
| H7019/HQ1 | 95 | 145 | 24 | 44.5 | 45.2 | 12000 / 19000 | 41.8 | 42.8 | 10000 / 17000 |
| 71820 | 100 | 125 | 13 | 22.5 | 37 | 8500 / 14000 | 21.2 | 34.9 | 8000 / 13000 |
| 71920 | 100 | 140 | 20 | 60.4 | 84.4 | 8500 / 14000 | 56.9 | 79.9 | 8000 / 13000 |
| H71920/HQ1 | 100 | 140 | 20 | 40.2 | 37.5 | 13000 / 20000 | 37.8 | 35.5 | 11000 / 18000 |
| 7020 | 100 | 150 | 24 | 81.2 | 103.3 | 8000 / 13000 | 76.7 | 98 | 7000 / 11000 |
| H7020/HQ1 | 100 | 150 | 24 | 45.5 | 48.2 | 12000 / 19000 | 42.8 | 44.8 | 10000 / 17000 |
| 71821 | 105 | 130 | 13 | 22.7 | 38.3 | 8500 / 14000 | 21.3 | 36.1 | 8000 / 13000 |
| 71921 | 105 | 145 | 20 | 61.4 | 88.2 | 8000 / 13000 | 57.8 | 83.5 | 7500 / 12000 |
| H71921/HQ1 | 105 | 145 | 20 | 40.8 | 39.2 | 12000 / 19000 | 38.5 | 36.8 | 10000 / 17000 |
| 7021 | 105 | 160 | 26 | 93.9 | 118.2 | 7500 / 12000 | 88.8 | 112.2 | 7000 / 11000 |
| H7021/HQ1 | 105 | 160 | 26 | 46.2 | 49.2 | 11000 / 18000 | 43.2 | 46.5 | 9000 / 15000 |
| 71822 | 110 | 140 | 16 | 31.8 | 51.6 | 8000 / 13000 | 29.9 | 48.7 | 7500 / 12000 |
| 71922 | 110 | 150 | 20 | 62.3 | 91.9 | 7500 / 12000 | 58.7 | 87 | 7000 / 11000 |
| H71922/HQ1 | 110 | 150 | 20 | 41.2 | 40.5 | 11000 / 18000 | 39.2 | 38.2 | 9500 / 16000 |
| 7022 | 110 | 170 | 28 | 110.4 | 139.8 | 7000 / 11000 | 104.4 | 132.8 | 6700 / 10000 |
| H7022/HQ1 | 110 | 170 | 28 | 47.8 | 53.5 | 11000 / 18000 | 45.2 | 51.2 | 9000 / 15000 |
| 71824 | 120 | 150 | 16 | 33.1 | 56.9 | 7000 / 11000 | 31.1 | 53.7 | 6700 / 10000 |
| 71924 | 120 | 165 | 22 | 73.7 | 107.6 | 7000 / 11000 | 69.5 | 101.9 | 6700 / 10000 |
| H71924/HQ1 | 120 | 165 | 22 | 43.2 | 44.8 | 10000 / 17000 | 40.8 | 42.5 | 9000 / 15000 |
| 7024 | 120 | 180 | 28 | 112.7 | 148.7 | 7000 / 11000 | 106.5 | 141.1 | 6700 / 10000 |
| H7024/HQ1 | 120 | 180 | 28 | 58.2 | 64.8 | 10000 / 17000 | 54.8 | 61.5 | 9000 / 15000 |
| 71826 | 130 | 165 | 18 | 38.7 | 67.6 | 6700 / 10000 | 36.3 | 63.8 | 6000 / 9000 |
| 71926 | 130 | 180 | 24 | 76.3 | 117.1 | 6700 / 10000 | 71.9 | 110.9 | 6000 / 9000 |
| H71926/HQ1 | 130 | 180 | 24 | 53.2 | 56.5 | 9000 / 15000 | 50.2 | 53.5 | 8000 / 14000 |
| 7026 | 130 | 200 | 33 | 144.8 | 190.8 | 6700 / 10000 | 136.8 | 181 | 6000 / 9000 |
| H7026/HQ1 | 130 | 200 | 33 | 58.5 | 66.8 | 9000 / 15000 | 55.2 | 63.2 | 8000 / 13000 |
| 71828 | 140 | 175 | 18 | 44.8 | 79.2 | 6000 / 9000 | 42 | 74.7 | 5600 / 8500 |
| 71928 | 140 | 190 | 24 | 78.9 | 126.4 | 6000 / 9000 | 74.4 | 119.7 | 5600 / 8500 |
| H71928/HQ1 | 140 | 190 | 24 | 53.8 | 59.2 | 8000 / 13000 | 50.8 | 55.8 | 7500 / 12000 |
| 7028 | 140 | 210 | 33 | 148.7 | 202.6 | 6000 / 9000 | 140.4 | 192.2 | 5600 / 8500 |
| H7028/HQ1 | 140 | 210 | 33 | 60.8 | 72.5 | 8500 / 14000 | 57.2 | 68.8 | 7500 / 12000 |
| 71830 | 150 | 190 | 20 | 51.2 | 92 | 5600 / 8500 | 48 | 86.8 | 5000 / 7500 |
| 71930 | 150 | 210 | 28 | 118.2 | 175.1 | 5600 / 8500 | 111.4 | 165.8 | 5000 / 7500 |
| H71930/HQ1 | 150 | 210 | 28 | 65.2 | 72.8 | 7500 / 12000 | 61.5 | 68.8 | 7000 / 11000 |
| 7030 | 150 | 225 | 35 | 168.4 | 232.5 | 5600 / 8500 | 159.1 | 220.6 | 5000 / 7500 |
| H7030/HQ1 | 150 | 225 | 35 | 74.8 | 88.5 | 7500 / 12000 | 70.5 | 83.8 | 7000 / 11000 |
| 71832 | 160 | 200 | 20 | 52.4 | 97.7 | 5000 / 7500 | 49.2 | 92.2 | 4800 / 7000 |
| 71932 | 160 | 220 | 28 | 123.6 | 191.2 | 5000 / 7500 | 116.5 | 181.1 | 4800 / 7000 |
| H71932/HQ1 | 160 | 220 | 28 | 66.2 | 75.8 | 7000 / 11000 | 62.5 | 71.5 | 6700 / 10000 |
| 7032 | 160 | 240 | 38 | 189.1 | 264.5 | 5000 / 7500 | 178.6 | 251 | 4800 / 7000 |
| H7032/HQ1 | 160 | 240 | 38 | 76.2 | 94.5 | 6700 / 10000 | 71.5 | 89.5 | 6300 / 9500 |
| 71834 | 170 | 215 | 22 | 66.5 | 123.4 | 4800 / 7000 | 62.4 | 116.5 | 4300 / 6300 |
| 71934 | 170 | 230 | 28 | 125.7 | 200 | 4800 / 7000 | 118.5 | 189.4 | 4300 / 6300 |
| H71934/HQ1 | 170 | 230 | 28 | 66.8 | 78.8 | 6700 / 10000 | 63.2 | 74.2 | 6000 / 9000 |
| 7034 | 170 | 260 | 42 | 205.6 | 299.3 | 4800 / 7000 | 194.2 | 284 | 4300 / 6300 |
| H7034/HQ1 | 170 | 260 | 42 | 78.2 | 100.5 | 6300 / 9500 | 73.5 | 95.2 | 5600 / 8500 |
| 71836 | 180 | 225 | 22 | 83.8 | 151.6 | 4800 / 7000 | 78.6 | 143 | 4300 / 6300 |
| 71936 | 180 | 250 | 33 | 159.7 | 249.1 | 4500 / 6700 | 150.6 | 235.9 | 4000 / 6000 |
| H71936/HQ1 | 180 | 250 | 33 | 79.5 | 95.2 | 6000 / 9000 | 75.2 | 89.8 | 5600 / 8500 |
| 7036 | 180 | 280 | 46 | 229.5 | 352.1 | 4500 / 6700 | 216.8 | 334.1 | 4000 / 6000 |
| H7036/HQ1 | 180 | 280 | 46 | 79.8 | 106.8 | 6000 / 9000 | 75.2 | 101.2 | 5300 / 8000 |
| 71838 | 190 | 240 | 24 | 100 | 179 | 4500 / 6700 | 94.4 | 169.2 | 4000 / 6000 |
| 71938 | 190 | 260 | 33 | 162.8 | 260.8 | 4300 / 6300 | 153.5 | 247 | 3800 / 5600 |
| H71938/HQ1 | 190 | 260 | 33 | 80.5 | 98.5 | 5600 / 8500 | 76.2 | 93.2 | 5000 / 7500 |
| 7038 | 190 | 290 | 46 | 235.1 | 370.8 | 4300 / 6300 | 222.1 | 351.8 | 3800 / 5600 |
| H7038/HQ1 | 190 | 290 | 46 | 95.2 | 124.5 | 5300 / 8000 | 89.8 | 117.8 | 4800 / 7000 |
| 71840 | 200 | 250 | 24 | 102.5 | 189.3 | 4300 / 6300 | 96.2 | 178.6 | 3800 / 5600 |
| 71940 | 200 | 280 | 38 | 198.4 | 311.4 | 3800 / 5600 | 187.1 | 294.9 | 3600 / 5300 |
| H71940/HQ1 | 200 | 280 | 38 | 82.8 | 105.5 | 5000 / 7500 | 78.2 | 99.5 | 4500 / 6700 |
| 7040 | 200 | 310 | 51 | 289.1 | 471.4 | 3800 / 5600 | 273.1 | 447.3 | 3600 / 5300 |
| H7040/HQ1 | 200 | 310 | 51 | 96.5 | 132.2 | 5000 / 7500 | 90.8 | 124.8 | 4500 / 6700 |
| 71844 | 220 | 270 | 24 | 106.4 | 209.3 | 3800 / 5600 | 99.8 | 197.4 | 3400 / 5000 |
| 71944 | 220 | 300 | 38 | 206.6 | 341.1 | 3600 / 5300 | 194.8 | 323 | 3200 / 4800 |
| H71944/HQ1 | 220 | 300 | 38 | 96.9 | 125.4 | 5000 / 7500 | 91.5 | 118.4 | 4300 / 6300 |
| 7044 | 220 | 340 | 56 | 325.3 | 559.4 | 3600 / 5300 | 307.3 | 530.8 | 3200 / 4800 |
| H7044/HQ1 | 220 | 340 | 56 | 113.9 | 156.5 | 4500 / 6700 | 107.2 | 148.1 | 4000 / 6000 |
| 71848 | 240 | 300 | 28 | 145 | 277 | 3400 / 5000 | 136 | 261 | 3000 / 4500 |
| 71948 | 240 | 320 | 38 | 219.2 | 384.2 | 3200 / 4800 | 206.7 | 363.8 | 3000 / 4500 |
| H71948/HQ1 | 240 | 320 | 38 | 153 | 216 | 4500 / 6500 | 146 | 200 | 4000 / 5800 |
| 7048 | 240 | 360 | 56 | 344.2 | 623.6 | 3200 / 4800 | 325.1 | 591.7 | 3000 / 4500 |
| 71852 | 260 | 320 | 28 | 148.8 | 299.3 | 3100 / 4600 | 139.6 | 282.3 | 2700 / 4100 |
| 71952 | 260 | 360 | 46 | 284.6 | 528.8 | 3000 / 4500 | 268.3 | 500.8 | 2600 / 4000 |
| 7052 | 260 | 400 | 65 | 491.1 | 700 | 2800 / 4300 | 462.8 | 664.3 | 2500 / 3900 |
| 71856 | 280 | 350 | 33 | 182 | 363.8 | 2800 / 4100 | 170.8 | 343.3 | 2400 / 3700 |
| 71956 | 280 | 380 | 46 | 288.7 | 554.6 | 2600 / 4000 | 272.2 | 525.5 | 2200 / 3600 |
| 7056 | 280 | 420 | 65 | 499 | 739.6 | 2500 / 3800 | 469.9 | 701.4 | 2100 / 3500 |
Все модели доступны с P5, P4, and P2 класс точностиs. H-prefix = высокоскоростной optimized. HQ1 suffix = ceramic hybrid (Si₃N₄ balls) ultra-speed variant. Custom размер отверстияs, класс преднатягаes, and cage materials available upon request. Контакты our engineering team for specific application recommendations.
Почему выбирают Luoyang Songju радиально-упорные шарикоподшипники
Разработано для precision, speed, and reliability in the most demanding machine tool spindle applications
Universal Ground Faces
Каждый подшипник face is прецизионно шлифованная for universal matching. Combine any two or more bearings in DB (O), DF (X), or DT (tandem) arrangement — no shimming, no measurement, no matched-set limitations.
Premium Bearing Steel
Rings manufactured from вакуумно-дегазированная GCr15 (100Cr6 / 52100) подшипниковая сталь with controlled retained austenite content for dimensional stability. Ceramic Si₃N₄ balls in HQ1 hybrid variants.
Advanced Cage Технологии
Phenolic resin cages for standard applications; PEEK cages for высокоскоростной and высокотемпературный requirements; обработанные латунные сепараторы for тяжёлый applications. Optimized cage pocket design for minimum friction.
Optimized Raceway Geometry
Precision-honed raceways with optimized osculation deliver the ideal balance of грузоподъёмность and low friction. Surface finish Ra 0.025–0.05μm for P2 grade bearings гарантирует ultra-smooth operation.
Three Преднатяг Classes
Доступно в лёгкие (L), средние (M), and Heavy (H) preload. лёгкие preload for высокоскоростной spindles, medium for general machining, heavy for maximum жёсткость in turning and heavy milling applications.
ISO Interchangeable
Designed to ISO 492 dimensional standards. Drop-in replacement for major global brands including NSK, SKF, FAG, NTN, and Timken precision angular contact bearing series.
Angular Контакты Bearing Installation Steps
Proper installation гарантирует optimal bearing performance and extended срок службы
Bearing Cleaning
Clean the bearing surface with high-purity petroleum solvent or rust-preventive oil. Air-dry or natural-dry completely. Ensure all cleaning fluid has fully evaporated before proceeding to installation.
Accuracy Check
Inspect вал, корпус bore, and spacers for burrs, nicks, or damage. Verify dimensions and runout marks on mating surfaces. Check spacer parallelism and perpendicularity to the вал centerline.
Bearing Installation
Install in a clean, dust-free environment. Use press-fit or thermal mounting methods as appropriate for the fit condition. Apply even force to the ring being mounted — never apply force through the rolling elements.
Post-Installation Check
After installation, run the bearing at low speed and verify smooth rotation, correct preload feel, and absence of abnormal noise or vibration. Confirm axial and radial runout values are within specification.
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Сообщите нам ваши требования — размер отверстия, series (718/719/70/72), contact angle (15°/25°), класс точности (P5/P4/P2), класс преднатяга, and quantity. Наши инженеры по применениям respond with a competitive quotation and detailed technical documentation within 24 hours.
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