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R205A81320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWE-020-FNS-C1-H-1
- Size 20
- Format FNS – flanged, normal, standard height
- Runner block body made of unalloyed steel CS
- Preload class C1: Low preload
- Accuracy class H: Highly accurate
- Without ball chain
- With initial lubrication and preservation
- Runner block body in standard version
- Overall length of the runner block = 75 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R205A81320 Original Rexroth Linear Bearing Block Specifications
The following table outlines the critical technical parameters of the Bosch Rexroth B.RUNNER BLOCK CS KWE-020-FNS-C1-H-1 (R205A81320), providing a clear comparison of its specifications and their practical significance.
| Parameter | Value | Explanation |
|---|---|---|
| Nominal Size | 20 | Refers to the size designation, ensuring compatibility with size 20 guide rails for precise linear motion. |
| Static Load Rating C0 | 19600 N | Indicates the maximum static load the block can withstand without deformation, crucial for heavy-duty applications. |
| Dynamic Load Capacity C | 14600 N | Represents the load capacity during motion, ensuring smooth performance under dynamic conditions. |
| Dynamic Load Capacity C50 | 18400 N | Load capacity based on 50,000 m travel, offering a higher rating for extended durability. |
| Static Torsional Moment Load Capacity Mt0 | 210 Nm | Measures resistance to twisting forces, enhancing stability in high-torque environments. |
| Dynamic Torsional Moment Load Capacity Mt100 | 150 Nm | Dynamic resistance to torsional forces, ensuring reliability during operation. |
| Friction Coefficient μ | 0.002 – 0.003 | Low friction ensures minimal wear and energy efficiency, critical for smooth motion. |
| Maximum Acceleration amax | 250 m/s² | Defines the maximum acceleration the block can handle, vital for high-speed applications. |
| Maximum Permissible Linear Speed vmax | 3 m/s | Specifies the top speed for safe and efficient operation in linear motion systems. |
| Height of Runner Block | 25.3 mm (0.996 in) | Determines the block’s vertical dimension, ensuring compatibility with system designs. |
| Width of Runner Block | 63 mm (2.48 in) | Defines the block’s width, affecting stability and load distribution. |
| Length of Runner Block | 75 mm (2.95 in) | Overall length impacts the block’s contact area with the rail, enhancing stability. |
| Weight | 0.410 kg (0.904 lb) | Lightweight design reduces system inertia, improving efficiency. |
| Permissible Ambient Temperature | -10°C to +80°C (14°F to 176°F) | Ensures reliable operation across a wide range of environmental conditions. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | FNS – flange, normal, standard height |
| Preload class | C1 – Low preload |
| Accuracy class | H – Highly accurate |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Width of runner block [mm] | 63 |
| Length of runner block [mm] | 75 |
| Height of runner block [mm] | 25.3 |
| Height runner block with guide rail [mm] | 30 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C [N] | 14600 |
| Dynamic load capacity C100 [N] | 14600 |
| Maximum acceleration rate amax [m/s²] | 250 |
| Note: Max. acceleration amax | If Fcomb◡> 2.8 • Fpr : amax = 50 m/s2 |
| Maximum permissible linear speed vmax [m/s] | 3 |
| Permissible ambient temperature (min. … max.) | -10 °C … +80 °C |
| Note: permissible ambient temperature (min. … max.) | 100 °C admissible for short time. |
| Friction coefficient μ | 0.002 … 0.003 |
| Note: friction coefficient μ | Friction coefficient µ without seal friction |
| Weight [kg] | 0.41 |
| Dynamic load capacity C50 [N] | 18400 |
| Static load capacity C0 [N] | 19600 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 190 |
| Dynamic torsional moment load capacity Mt100 [Nm] | 150 |
| Static torsional moment load capacity Mt0 [Nm] | 210 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 160 |
| Dynamic longitudinal moment load capacity ML100 [Nm] | 130 |
| Static longitudinal moment load capacity ML0 [Nm] | 170 |
| Pitch T guide rail [mm] | 60 |
| Dimension A (profiled rail systems) [mm] | 63 |
| Dimension A1 (profiled rail systems) [mm] | 31.5 |
| Dimension A2 (profiled rail systems) [mm] | 20 |
| Dimension A3 (profiled rail systems) [mm] | 21.5 |
| Dimension B (profiled rail systems) [mm] | 75 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 49.6 |
| Dimension E1 [mm] | 53 |
| Dimension E2 [mm] | 40 |
| Dimension E8 (profiled rail systems) [mm] | 29 |
| Dimension E9 (profiled rail systems) [mm] | 10.15 |
| Dimension H [mm] | 30 |
| Dimension H1 (profiled rail systems) [mm] | 25.3 |
| Dimension H2 (profiled rail systems) [mm] | 17 |
| Dimension K1 (profiled rail systems) [mm] | 11.8 |
| Dimension K2 (profiled rail systems) [mm] | 11.8 |
| Dimension K3 (profiled rail systems) [mm] | 5.65 |
| Dimension K4 (profiled rail systems) [mm] | 5.65 |
| Dimension N1 (profiled rail systems) [mm] | 7.7 |
| Dimension N6 (profiled rail systems) [mm] | 10 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S1 (profiled rail systems) [mm] | 5.3 |
| Dimension S2 (profiled rail systems) | M6 |
| Dimension S5 (profiled rail system) [mm] | 6 |
| Dimension S9 | M2,5×6 mm |
| Dimension S9 thread diameter (profiled rail systems) | M2,5 |
| Dimension S9 lead [mm] | 6 |
| Dimension T [mm] | 60 |
| Dimension T1 min [mm] | 13 |
| Dimension V1 [mm] | 6 |
| Height of guide rail H2 [mm] | 17 |
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