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R169481410 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWC-020-SNN-C1-N-2
- Size 20
- Format SNN: Width = slimline, length = normal, height = low
- Runner block body made of unalloyed steel CS
- Preload class C1: Low preload
- Accuracy class N: Standard
- Without ball chain
- Preserved
- Without initial lubrication
- Without attachment element, left (front reference edge)
- Without attachment element, right (front reference edge)
- 45° angular lube nipples loosely attached.
- Runner block body in standard version
- Overall length of the runner block = 72.5 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R169481410 Original Rexroth Linear Bearing Block Specifications
The Rexroth R169481410 linear bearing block is built to meet stringent engineering standards, with parameters optimized for performance and reliability. Below is a detailed comparison of its technical attributes, including metric and imperial conversions for global applicability.
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 20 mm (0.79 in) | Defines the size category of the linear bearing block, ensuring compatibility with corresponding guide rails. |
| Width of Runner Block | 42 mm (1.65 in) | Determines the block’s width, critical for fitting within compact machinery designs. |
| Length of Runner Block | 72.5 mm (2.85 in) | Specifies the block’s length, affecting stability and load distribution along the rail. |
| Height of Runner Block | 23 mm (0.91 in) | Indicates the block’s height, essential for applications with low vertical clearance. |
| Height with Guide Rail | 28 mm (1.10 in) | Total height including the rail, critical for system integration in tight spaces. |
| Dynamic Load Capacity C100 | 14500 N (3259 lbf) | Maximum dynamic load the block can handle over 100,000 m travel, ensuring durability under motion. |
| Dynamic Load Capacity C50 | 18300 N (4114 lbf) | Dynamic load capacity for 50,000 m travel, offering higher capacity for shorter travel distances. |
| Static Load Capacity C0 | 24400 N (5485 lbf) | Maximum static load the block can withstand without deformation, critical for stationary applications. |
| Dynamic Torsional Moment Mt100 | 190 Nm (140 ft-lb) | Torsional load capacity for 100,000 m, ensuring stability against twisting forces. |
| Static Torsional Moment Mt0 | 310 Nm (229 ft-lb) | Static torsional load capacity, vital for applications with high rotational forces. |
| Dynamic Longitudinal Moment ML100 | 100 Nm (74 ft-lb) | Longitudinal moment capacity for 100,000 m, supporting stability in linear motion. |
| Static Longitudinal Moment ML0 | 165 Nm (122 ft-lb) | Static longitudinal moment capacity, ensuring robustness under static loads. |
| Maximum Acceleration amax | 250 m/s² (820 ft/s²) | Maximum acceleration the block can handle, critical for high-speed applications (reduces to 50 m/s² under specific load conditions). |
| Maximum Linear Speed vmax | 3 m/s (9.84 ft/s) | Maximum permissible speed, ensuring safe and efficient operation. |
| Friction Coefficient μ | 0.002–0.003 | Low friction range, reducing energy loss and wear during motion. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods | Operating temperature range, ensuring reliability in varied environments. |
| Weight | 0.3 kg (0.66 lb) | Lightweight design, minimizing system weight without compromising strength. |
| Pitch T Guide Rail | 60 mm (2.36 in) | Distance between mounting holes on the rail, ensuring secure attachment. |
| Seal Type | SS – Standard Seal | Provides protection against dust and debris, extending service life. |
| Preload Class | C1 – Low Preload | Moderate preload for balanced rigidity and smooth motion. |
| Accuracy Class | N – Normal | Standard accuracy level, suitable for most industrial applications. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | SNN – slimline, standard, low |
| Model | High-precision ball runner block |
| Material | Carbon steel |
| Preload class | C1 – Low preload |
| Accuracy class | N – Normal |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Self-aligning for compensation of misalignments | Without self-alignment |
| Width of runner block [mm] | 42 |
| Length of runner block [mm] | 72.5 |
| Height of runner block [mm] | 23 |
| Height runner block with guide rail [mm] | 28 |
| Lubrication | With preservation and without initial lubrication |
| Dynamic load capacity C100 [N] | 14500 |
| Note: dynamic load capacity C100 | Dynamic load capacities and load moments are based on a stroke travel of 100,000 m according to DIN ISO 14728-1. |
| 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. For operation at negative temperatures, please consult us. |
| Friction coefficient μ | 0.002 … 0.003 |
| Note: friction coefficient μ | Without friction of seal |
| Weight [kg] | 0.3 |
| Dynamic load capacity C50 [N] | 18300 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 24400 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 240 |
| Note: Dynamic torsional moment load capacity Mt50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Dynamic torsional moment load capacity Mt100 [Nm] | 190 |
| Note: Dynamic torsional moment load capacity Mt100 | Dynamic load capacities and load moments are based on a stroke travel of 100,000 m according to DIN ISO 14728-1. |
| Static torsional moment load capacity Mt0 [Nm] | 310 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 130 |
| Note: Dynamic longitudinal moment load capacity ML50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Dynamic longitudinal moment load capacity ML100 [Nm] | 100 |
| Note: Dynamic longitudinal moment load capacity ML100 | Dynamic load capacities and load moments are based on a stroke travel of 100,000 m according to DIN ISO 14728-1. |
| Static longitudinal moment load capacity ML0 [Nm] | 165 |
| Pitch T guide rail [mm] | 60 |
| Dimension A (profiled rail systems) [mm] | 42 |
| Dimension A1 (profiled rail systems) [mm] | 21 |
| Dimension A2 (profiled rail systems) [mm] | 20 |
| Dimension A3 (profiled rail systems) [mm] | 11 |
| Dimension B (profiled rail systems) [mm] | 72.5 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 49.6 |
| Dimension E1 [mm] | 32 |
| Dimension E2 (profiled rail systems) [mm] | 32 |
| Dimension E8 (profiled rail systems) [mm] | 30.5 |
| Dimension E9 (profiled rail systems) [mm] | 5.6 |
| Dimension H [mm] | 28 |
| Dimension H1 (profiled rail systems) [mm] | 23 |
| Dimension H2 with cover strip (profiled rail systems) [mm] | 20.75 |
| Dimension H2 without cover strip (profiled rail systems) [mm] | 20.55 |
| Dimension K1 (profiled rail systems) [mm] | 13 |
| Dimension K3 (profiled rail systems) [mm] | 3.6 |
| Dimension N3 (profiled rail systems) [mm] | 6.3 |
| Dimension N6 (profiled rail systems) [mm] | 13.2 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S2 (profiled rail systems) | M5 |
| Dimension S5 (profiled rail system) [mm] | 6 |
| Dimension S9 | M3x5 mm |
| Dimension S9 thread diameter (profiled rail systems) | M3 |
| Dimension S9 lead [mm] | 5 |
| Dimension T1 min [mm] | 13 |
| Dimension V1 [mm] | 6 |
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