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The R205C21420 linear bearing block is engineered for precision and reliability. Below is a detailed comparison of its technical parameters, presented in a structured table for clarity.
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 25 mm | Indicates the size compatibility with 25 mm profiled rail systems, ensuring proper fit. |
| Width of Runner Block | 48 mm (1.89 in) | Defines the block’s width, critical for fitting within compact machinery layouts. |
| Length of Runner Block | 86.2 mm (3.39 in) | Specifies the block’s length, affecting stability and load distribution. |
| Height of Runner Block | 30 mm (1.18 in) | Height of the block, ensuring alignment with guide rails. |
| Height with Guide Rail | 36 mm (1.42 in) | Total height when mounted, critical for vertical space planning. |
| Dynamic Load Capacity C | 21,800 N (4,900 lbf) | Maximum dynamic load the block can handle during motion, ensuring durability. |
| Static Load Capacity C0 | 30,600 N (6,880 lbf) | Maximum static load the block can withstand without deformation. |
| Dynamic Torsional Moment Mt50 | 340 Nm (250.8 ft-lb) | Resistance to twisting forces during dynamic operation, ensuring stability. |
| Static Torsional Moment Mt0 | 380 Nm (280.3 ft-lb) | Resistance to twisting forces when stationary, critical for heavy loads. |
| Dynamic Longitudinal Moment ML50 | 280 Nm (206.5 ft-lb) | Capacity to handle longitudinal moments during motion, enhancing precision. |
| Static Longitudinal Moment ML0 | 310 Nm (228.6 ft-lb) | Resistance to longitudinal moments when stationary, ensuring rigidity. |
| Maximum Acceleration amax | 250 m/s² (820 ft/s²) | Maximum acceleration the block can handle, critical for high-speed applications. |
| Maximum Linear Speed vmax | 3 m/s (9.84 ft/s) | Maximum speed for reliable operation, balancing speed and stability. |
| Friction Coefficient μ | 0.002–0.003 | Low friction ensures smooth motion, reducing energy loss and wear. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods | Operating temperature range, ensuring performance in varied environments. |
| Weight | 0.5 kg (1.1 lb) | Lightweight design reduces system inertia, improving efficiency. |
| Pitch T Guide Rail | 60 mm (2.36 in) | Distance between mounting holes on the rail, ensuring secure installation. |
| Seal Type | SS – Standard Seal | Protects against contaminants, extending service life in dusty environments. |
| Version | Ball rail system |
| Nominal size [mm] | 25 |
| Format | SNS – slimline, normal, standard height |
| Preload class | C1 – Low preload |
| Accuracy class | N – Normal |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Width of runner block [mm] | 48 |
| 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] | 0.5 |
| 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] | 48 |
| Dimension A1 (profiled rail systems) [mm] | 24 |
| Dimension A2 (profiled rail systems) [mm] | 23 |
| Dimension A3 (profiled rail systems) [mm] | 12.5 |
| 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] | 35 |
| Dimension E2 [mm] | 35 |
| 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] | 17.45 |
| Dimension K2 (profiled rail systems) [mm] | 17.5 |
| Dimension K3 (profiled rail systems) [mm] | 7 |
| Dimension K4 (profiled rail systems) [mm] | 7 |
| Dimension N3 (profiled rail systems) [mm] | 9 |
| Dimension N6 (profiled rail systems) [mm] | 11.3 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S2 (profiled rail systems) | M6 |
| 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 |