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Addtional pictures 
| Part numbers (TNR) | R1631 194 23 |
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| Size | 15 |
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| Accuracy class | N |
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| Preloading | without |
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| Ball Chain | Yes |
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| Seal | low-friction |
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| Lubrication | pre-lubricated |
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| A [mm] | 47 |
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| A1 [mm] | 23.5 |
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| A2 [mm] | 15 |
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| A3 [mm] | 16 |
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| B [mm] | 58.2 |
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| B1 [mm] | 39.2 |
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| H [mm] | 24 |
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| H1 [mm] | 19.9 |
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| K1 [mm] | 8 |
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| K2 [mm] | 9.6 |
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| K3 [mm] | 3.2 |
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| K4 [mm] | 3.2 |
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| H2 with rail seal cover strip [mm] | 16.3 |
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| H2 without rail seal cover strip [mm] | 16.2 |
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| E1 [mm] | 38 |
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| E2 [mm] | 30 |
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| E3 [mm] | 26 |
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| E8 [mm] | 24.55 |
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| E9 [mm] | 6.7 |
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| N1 [mm] | 5.2 |
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| N2 [mm] | 4.4 |
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| N4 [mm] | 10.3 |
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| N6±0,5 [mm] | 10.3 |
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| S1 [mm] | 4.3 |
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| S2 [mm] | M5 |
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| S5 [mm] | 4.4 |
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| S9 [mm] | M2,5x3,5 |
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| S11 [mm] | 3.7 |
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| T [mm] | 60 |
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| V1 [mm] | 5 |
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| weight [kg] | 0.1 |
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| C [N] | 7280 |
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| F max [N] | 3000 |
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| Mt [Nm] | 69 |
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| Mt max [Nm] | 29 |
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| ML [Nm] | 37 |
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| ML max [Nm] | 16 |
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| Note | Determination of the dynamic load capacities and moments is based on a travel life of 100,000 m per ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.26. |
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| Dynamic characteristics | Travel speed: vmax = 5 m/s Acceleration: amax = 500 m/s2 (If Fcomb > 2.8 · Fpr : amax = 50 m/s2) |
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| Product group info | Note
Can be used on all Ball Guide Rails SNS. |
力士乐STAR引入的新型负载保持和下降阀使行走机械具有更高的能效，也更易于控制。利用重力作用、而不是发动机功率，就能帮助吊臂的下降；力士乐STAR的这种新型“绿色阀”极大降低了功率要求，因而减少了燃油消耗和排放量。
原理其实并不复杂：利用重力降低吊臂及其负载，而不再使用设备的宝贵能源。而这与传统负载保持与下降阀的原理刚好相反。从严格的意义而言，为满足安全要求并确保平稳运动，必须用一只平衡阀来平衡吊臂的重量；这就需要发动机输出更多功率，以建立打开阀门所必需的压力。对于伸缩臂叉装车、R1631-194-23精密滑块轴承轴承STAR导轨的清洗：拆卸下STAR导轨检修时，首先记录STAR导轨的外观，确认润滑剂的残存量，取样检查用的润滑剂之后，洗STAR导轨。作为清洗剂，普通使用汽油、煤油。
拆下来的STAR导轨的清洗，分粗清洗和细清洗，分别放在容器中，先放上金属的网垫底，使STAAR导轨不直接接触容器的脏物。粗清洗时，如果使STAAR导轨带着脏物旋转，会损伤STAR导轨的滚动面，应该加以注意。在粗清洗油中，使用刷子清除去润滑脂、粘着物，大致干净后，转入精洗。
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