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R205A22320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWE-025-FNS-C2-H-1
- Size 25
- Format FNS – flanged, normal, standard height
- Runner block body made of unalloyed steel CS
- Preload class C2: Medium 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 = 86.2 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R205A22320 Original Rexroth Linear Bearing Block Specifications
The following table outlines the key technical parameters of the Bosch Rexroth MINI R.BLOCK NRII (R044279401), providing a clear comparison of its specifications and their practical implications.
| Parameter | Value | Explanation |
|---|---|---|
| Nominal Size | 7 mm (0.276 inches) | Defines the size category, ensuring compatibility with matching guide rails. |
| Width of Runner Block | 17 mm (0.669 inches) | Compact width for space-sensitive applications. |
| Length of Runner Block | 24 mm (0.945 inches) | Normal length for balanced stability and motion. |
| Height of Runner Block | 6.5 mm (0.256 inches) | Low profile for integration into tight spaces. |
| Dynamic Load Capacity (C) | 860 N (193.34 lbf) | Indicates the maximum load during motion, calculated per DIN 636 standards. |
| Static Load Capacity (C0) | 1400 N (314.73 lbf) | Maximum load the block can withstand when stationary. |
| Maximum Permissible Speed (vmax) | 3 m/s (9.84 ft/s), up to 5 m/s with wear | Defines the speed limit for optimal performance; higher speeds may reduce service life. |
| Maximum Acceleration (amax) | 250 m/s² (820.21 ft/s²) | Maximum acceleration for pre-tensioned systems; 50 m/s² for non-preloaded. |
| Permissible Ambient Temperature | -10°C to +80°C (14°F to 176°F), up to 100°C (212°F) briefly | Ensures reliable operation across a wide temperature range. |
| Preload Class | C0 – Without preload | Eliminates preload forces for smoother motion in low-force applications. |
| Accuracy Class | N – Normal | Standard precision suitable for most industrial applications. |
| Weight | 0.021 kg (0.046 lbs) | Lightweight design for minimal system load. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 25 |
| Format | FNS – flange, normal, standard height |
| Preload class | C2 – Medium preload |
| Accuracy class | H – Highly accurate |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Width of runner block [mm] | 70 |
| Length of runner block [mm] | 86.2 |
| Height of runner block [mm] | 30 |
| Height runner block with guide rail [mm] | 36 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C [N] | 21800 |
| Dynamic load capacity C100 [N] | 21800 |
| 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] | 0.6 |
| Dynamic load capacity C50 [N] | 27500 |
| Static load capacity C0 [N] | 30600 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 340 |
| Dynamic torsional moment load capacity Mt100 [Nm] | 270 |
| Static torsional moment load capacity Mt0 [Nm] | 380 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 280 |
| Dynamic longitudinal moment load capacity ML100 [Nm] | 220 |
| Static longitudinal moment load capacity ML0 [Nm] | 310 |
| Pitch T guide rail [mm] | 60 |
| Dimension A (profiled rail systems) [mm] | 70 |
| Dimension A1 (profiled rail systems) [mm] | 35 |
| Dimension A2 (profiled rail systems) [mm] | 23 |
| Dimension A3 (profiled rail systems) [mm] | 23.5 |
| Dimension B (profiled rail systems) [mm] | 86.2 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 57.8 |
| Dimension E1 [mm] | 57 |
| Dimension E2 [mm] | 45 |
| Dimension E8 (profiled rail systems) [mm] | 33 |
| Dimension E9 (profiled rail systems) [mm] | 13 |
| Dimension H [mm] | 36 |
| Dimension H1 (profiled rail systems) [mm] | 30 |
| Dimension H2 (profiled rail systems) [mm] | 20 |
| Dimension K1 (profiled rail systems) [mm] | 12.5 |
| Dimension K2 (profiled rail systems) [mm] | 12.5 |
| Dimension K3 (profiled rail systems) [mm] | 7 |
| Dimension K4 (profiled rail systems) [mm] | 7 |
| Dimension N1 (profiled rail systems) [mm] | 9 |
| Dimension N6 (profiled rail systems) [mm] | 11.3 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S1 (profiled rail systems) [mm] | 6.7 |
| Dimension S2 (profiled rail systems) | M8 |
| Dimension S5 (profiled rail system) [mm] | 7 |
| Dimension S9 | M3x6.5 mm |
| Dimension S9 thread diameter (profiled rail systems) | M3 |
| Dimension S9 lead [mm] | 6.5 |
| Dimension T [mm] | 60 |
| Dimension T1 min [mm] | 13 |
| Dimension V1 [mm] | 7.5 |
| Height of guide rail H2 [mm] | 20 |
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