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R205C81320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWE-020-SNS-C1-H-1
- Size 20
- Format SNS – slimline, 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.
R205C81320 Original Rexroth Linear Bearing Block Specifications
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 20 mm | Defines the standard size for compatibility with corresponding guide rails. |
| Width of Runner Block | 44 mm (1.73 in) | Determines the block’s transverse dimension, critical for fitting in compact setups. |
| Length of Runner Block | 75 mm (2.95 in) | Overall length affecting stability and load distribution. |
| Height of Runner Block | 25.3 mm (1.00 in) | Vertical dimension, impacting the block’s profile in machinery. |
| Height with Guide Rail | 30 mm (1.18 in) | Total height when mounted, crucial for clearance calculations. |
| Dynamic Load Capacity C | 14,600 N | Maximum load during motion, ensuring reliability under dynamic conditions. |
| Static Load Capacity C0 | 19,600 N | Maximum load when stationary, indicating structural strength. |
| Dynamic Torsional Moment Mt50 | 190 Nm | Resistance to twisting forces during operation, enhancing stability. |
| Static Torsional Moment Mt0 | 210 Nm | Twisting resistance when stationary, ensuring robustness. |
| Maximum Acceleration amax | 250 m/s² (820 ft/s²) | Maximum acceleration the block can withstand, critical for high-speed applications. |
| Maximum Linear Speed vmax | 3 m/s (9.84 ft/s) | Top speed for linear motion, balancing performance and safety. |
| Friction Coefficient μ | 0.002–0.003 | Low friction ensures energy efficiency and smooth motion. |
| Permissible Ambient Temperature | -10°C to +80°C (14°F to 176°F), 100°C (212°F) short-term | Operating temperature range, ensuring versatility in various environments. |
| Weight | 0.35 kg (0.77 lb) | Lightweight design for easy integration without compromising strength. |
| Pitch T Guide Rail | 60 mm (2.36 in) | Distance between mounting holes on the rail, affecting installation. |
| Seal | SS – Standard Seal | Provides basic protection against contaminants, balancing friction and sealing. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | SNS – slimline, 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] | 44 |
| 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] | 0.35 |
| 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] | 44 |
| Dimension A1 (profiled rail systems) [mm] | 22 |
| Dimension A2 (profiled rail systems) [mm] | 20 |
| Dimension A3 (profiled rail systems) [mm] | 12 |
| Dimension B (profiled rail systems) [mm] | 75 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 49.6 |
| Dimension E1 [mm] | 32 |
| Dimension E2 [mm] | 36 |
| 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] | 13.8 |
| Dimension K2 (profiled rail systems) [mm] | 13.8 |
| Dimension K3 (profiled rail systems) [mm] | 5.65 |
| Dimension K4 (profiled rail systems) [mm] | 5.65 |
| Dimension N3 (profiled rail systems) [mm] | 7.5 |
| Dimension N6 (profiled rail systems) [mm] | 10 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S2 (profiled rail systems) | M5 |
| 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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