随着机床装备技术的发展，高精度、高效率成为当前机械行业的重要技术特点，机床滚珠丝杠支承轴承逐渐放弃传统的配对角接触球的结构模式，转而采用滚针/推力圆柱滚子轴承的结构形式。
滚针/推力圆柱滚子轴承采用外圈加厚的滚针轴承和两列推力圆柱滚子轴承的组合结构，可以承受更大的径向/轴向载荷，具备更高的径向/轴向刚性，同时该系列轴承轴向跳动精度可达1μm，特别符合当前机械加工行业所要求的高精度，高承载，高效率的特点。
产品特性
滚针/推力圆柱滚子轴承包括一个加厚的外圈、滚针保持器组件、滚针内圈、两个推力圆柱滚子保持器组件和两个推理轴圈，相当于一套滚针轴承和两套推力圆柱滚子轴承的组合轴承，两个推力圆柱滚子轴承中心和滚针轴承中心重合。
滚针/推力圆柱滚子轴承可以承受两个方向的轴向力、径向力和倾覆力矩。
滚针/推力圆柱滚子轴承按照外圈安装方式的差异可以分为螺栓安装和非螺栓安装两个类型系列。
产品名称：zarn系列
参数：
| 轴径 mm | 公称型号 | 重量 g | 公称型号 | 重量 g | 尺寸 | 基本额定载荷 | 极限转速 | 拧紧 力矩 nm | 摩擦 力矩 nm | ||||||||||||||||||
| d | d | h | h1 | h2 | h3 | c | d1 | d2 | d3 | b | b1 | b2 | r | r1 | 径向 | 轴承 | 油rpm | 脂rpm | |||||||||
| 动cr kn | 静cor kn | 动cr kn | 静cor kn | ||||||||||||||||||||||||
| 15 | zarn 1545tn | 340 | zarn 1545ltn | 370 | 15 | 45 | 40 | 28.0 | 53 | 41.0 | 16 | 35 | 24 | 34 | 8.0 | 21.0 | 11 | 0.3 | 0.6 | 14.3 | 19.6 | 23.5 | 64.3 | 8500 | 2200 | 10 | 0.35 |
| 17 | zarn 1747tn | 370 | zarn 1747ltn | 410 | 17 | 47 | 43 | 29.5 | 57 | 43.5 | 16 | 38 | 28 | 38 | 9.5 | 23.5 | 11 | 0.3 | 0.6 | 15.4 | 22.1 | 24.3 | 69.3 | 7800 | 2100 | 12 | 0.4 |
| 20 | zarn 2052tn | 410 | zarn 2052ltn | 460 | 20 | 52 | 46 | 31.0 | 60 | 45.0 | 16 | 42 | 30 | 40 | 10.0 | 24.0 | 11 | 0.3 | 0.6 | 14.1 | 20.6 | 27.4 | 77.0 | 7000 | 2000 | 18 | 0.5 |
| zarn 2062tn | 870 | zarn 2062ltn | 990 | 20 | 62 | 60 | 40.0 | 75 | 55.0 | 20 | 52 | 40 | 50 | 13.0 | 28.0 | 11 | 0.3 | 0.6 | 22.6 | 38.0 | 64.0 | 141.0 | 6000 | 1500 | 38 | 1.3 | |
| 25 | zarn 2557tn | 530 | zarn 2557ltn | 590 | 25 | 57 | 50 | 35.0 | 65 | 50.0 | 20 | 47 | 36 | 45 | 10.0 | 25.0 | 11 | 0.3 | 0.6 | 24.8 | 39.8 | 30.5 | 93.5 | 6000 | 1900 | 25 | 0.55 |
| zarn 2572tn | 1170 | zarn 2572ltn | 1320 | 25 | 72 | 60 | 40.0 | 75 | 55.0 | 20 | 62 | 48 | 60 | 12.0 | 27.0 | 11 | 0.3 | 0.6 | 24.8 | 41.4 | 80.0 | 199.0 | 4900 | 1400 | 55 | 1.6 | |
| 30 | zarn 3062tn | 600 | zarn 3062ltn | 750 | 30 | 62 | 50 | 35.0 | 65 | 50.0 | 20 | 52 | 40 | 50 | 10.0 | 25.0 | 11 | 0.3 | 0.6 | 24.3 | 41.5 | 39.0 | 101.0 | 5500 | 1800 | 32 | 0.65 |
| zarn 3080tn | 1500 | zarn 3080ltn | 1700 | 30 | 80 | 66 | 43.0 | 82 | 59.0 | 20 | 68 | 52 | 66 | 15.0 | 31.0 | 12 | 0.3 | 0.6 | 25.9 | 45.8 | 75.7 | 221.0 | 4400 | 1300 | 75 | 2.1 | |
| 35 | zarn 3570tn | 800 | zarn 3570ltn | 930 | 35 | 70 | 54 | 37.0 | 70 | 53.0 | 20 | 60 | 45 | 58 | 11.0 | 27.0 | 12 | 0.3 | 0.6 | 26.0 | 47.0 | 45.9 | 105.4 | 4800 | 1700 | 42 | 0.9 |
| zarn 3585tn | 1850 | zarn 3585ltn | 1800 | 35 | 85 | 66 | 43.0 | 82 | 59.0 | 20 | 73 | 60 | 73 | 14.0 | 30.0 | 12 | 0.3 | 0.6 | 28.0 | 52.7 | 78.2 | 237.6 | 4000 | 1250 | 100 | 2.3 | |
| 40 | zarn 4075tn | 900 | zarn 4075ltn | 1000 | 40 | 75 | 54 | 37.0 | 70 | 53.0 | 20 | 65 | 50 | 63 | 11.0 | 27.0 | 12 | 0.3 | 0.6 | 27.5 | 53.0 | 59.0 | 163.0 | 4000 | 1600 | 500 | 1 |
| zarn 4090tn | 2090 | zarn 4090ltn | 2390 | 40 | 90 | 75 | 50.0 | 93 | 68.0 | 25 | 78 | 60 | 78 | 16.0 | 34.0 | 12 | 0.3 | 0.6 | 40.9 | 72.5 | 84.2 | 269.0 | 3700 | 1200 | 120 | 2.5 | |
| 45 | zarn 4580tn | 1120 | zarn 4580ltn | 1270 | 45 | 80 | 60 | 42.5 | 75 | 57.5 | 25 | 70 | 50 | 68 | 11.5 | 26.5 | 12 | 0.3 | 0.6 | 38.0 | 74.0 | 61.0 | 177.0 | 4000 | 1500 | 65 | 1.2 |
| zarn 45105tn | 3020 | zarn 45105ltn | 3420 | 45 | 105 | 82 | 53.5 | 103 | 74.5 | 25 | 90 | 56 | 88 | 17.5 | 38.5 | 14 | 0.3 | 0.6 | 40.0 | 82.0 | 154.0 | 405.0 | 3300 | 1150 | 150 | 3.5 | |
| 50 | zarn 5090tn | 1430 | zarn 5090ltn | 1780 | 50 | 90 | 60 | 53.5 | 78 | 60.5 | 25 | 78 | 70 | 78 | 11.5 | 29.5 | 12 | 0.3 | 0.6 | 40.0 | 82.0 | 90.0 | 300.0 | 3600 | 1200 | 85 | 2.2 |
| zarn 50110tn | 3300 | zarn 50110ltn | 3750 | 50 | 110 | 82 | 53.5 | 103 | 74.5 | 25 | 95 | 60 | 93 | 17.5 | 38.5 | 14 | 0.3 | 0.6 | 45.4 | 88.1 | 119.3 | 387.0 | 3100 | 1100 | 180 | 3.8 | |
| 55 | zarn 55115tn | 3500 | zarn 55115ltn | 4000 | 55 | 115 | 82 | 53.5 | 103 | 74.5 | 25 | 100 | 75 | 98 | 17.5 | 38.5 | 14 | 0.3 | 0.6 | 49.0 | 109.1 | 126.0 | 369.0 | 2900 | 1000 | 220 | 4 |
| 60 | zarn 60120tn | 3700 | zarn 60120ltn | 4850 | 60 | 120 | 82 | 53.5 | 103 | 74.5 | 25 | 105 | 80 | 105 | 17.5 | 38.5 | 16 | 0.3 | 0.6 | 54.9 | 118.6 | 141.0 | 505.0 | 2700 | 950 | 250 | 4.2 |
| 65 | zarn 65125tn | 4000 | zarn 65125ltn | 4600 | 65 | 125 | 82 | 53.5 | 103 | 74.5 | 25 | 110 | 90 | 108 | 17.5 | 38.5 | 16 | 0.3 | 0.6 | 54.2 | 100.8 | 126.2 | 441.4 | 2600 | 900 | 270 | 4 |
| 70 | zarn 70130tn | 4100 | zarn 70130ltn | 4650 | 70 | 130 | 82 | 53.5 | 103 | 74.5 | 25 | 115 | 100 | 115 | 17.5 | 38.5 | 16 | 0.3 | 0.6 | 69.6 | 143.5 | 143.0 | 532.0 | 2400 | 800 | 330 | 4.8 |
| 75 | zarn 75155tn | 7900 | zarn 75155ltn | 9100 | 75 | 155 | 100 | 65.0 | 125 | 90.0 | 30 | 135 | 115 | 135 | 21.0 | 46.0 | 16 | 0.3 | 1.0 | 95.0 | 193.0 | 290.0 | 890.0 | 2100 | 700 | 580 | 8 |
| 90 | zarn 90180tn | 11800 | zarn 90180ltn | 13200 | 90 | 180 | 110 | 72.5 | 135 | 94.5 | 35 | 160 | 130 | 158 | 22.5 | 47.5 | 16 | 0.3 | 1.0 | 101.0 | 256.0 | 320.0 | 1172.0 | 1800 | 700 | 980 | 10.5 |
