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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R167121420 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-025-BNS-C1-N-1
- Size 25
- Format BNS: Width = wide, length = normal, height = standard
- Runner block body made of unalloyed steel CS
- Preload class C1: Low preload
- Accuracy class N: Standard
- Without ball chain
- With initial lubrication and preservation
- Roller bearing grease Dynalub 510
- Without attachment element, left (front reference edge)
- Without attachment element, right (front reference edge)
- Straight lube connection loosely attached.
- Runner block body in standard version
- Overall length of the runner block = 105.0 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R167121420 Original Rexroth Linear Bearing Block Specifications
| Parameter | Value | Explanation |
|---|---|---|
| Nominal Size | 25/70 mm | Indicates the size compatibility with guide rails, ensuring proper fit for linear motion systems. |
| Width of Runner Block | 120 mm (4.72 in) | Wide design enhances stability for high torsional loads. |
| Length of Runner Block | 105 mm (4.13 in) | Normal length provides a balanced footprint for various applications. |
| Height of Runner Block | 29.75 mm (1.17 in) | Standard height ensures compatibility with standard rail systems. |
| Height with Guide Rail | 35 mm (1.38 in) | Total height when mounted, critical for system clearance. |
| Dynamic Load Capacity C100 | 36200 N | Maximum load the block can handle for 100,000 m travel, per DIN ISO 14728-1. |
| Dynamic Load Capacity C50 | 45600 N | Load capacity for 50,000 m travel, offering higher capacity for shorter distances. |
| Static Load Capacity C0 | 50200 N | Maximum static load the block can withstand without deformation. |
| Dynamic Torsional Moment Mt100 | 1350 Nm | Torsional resistance for 100,000 m travel, critical for rotational stability. |
| Static Torsional Moment Mt0 | 1870 Nm | Static torsional capacity, ensuring durability under stationary loads. |
| Dynamic Longitudinal Moment ML100 | 490 Nm | Longitudinal moment capacity for 100,000 m, supporting linear stability. |
| Static Longitudinal Moment ML0 | 680 Nm | Static longitudinal moment capacity for stationary applications. |
| Maximum Acceleration amax | 500 m/s² (1640 ft/s²) | Maximum acceleration for dynamic applications, reduced to 50 m/s² under specific conditions. |
| Maximum Linear Speed vmax | 5 m/s (16.4 ft/s) | Top speed for linear motion, ensuring high-performance operation. |
| Friction Coefficient μ | 0.002 – 0.003 | Low friction ensures smooth motion and energy efficiency. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods | Operating temperature range, with consultation required for sub-zero conditions. |
| Weight | 1.34 kg (2.95 lbs) | Lightweight yet robust, balancing durability and ease of installation. |
| Material | Carbon Steel | High-strength material ensures long-lasting performance. |
| Seal Type | SS – Standard Seal | Protects against contaminants, extending service life. |
| Lubrication | Initial lubrication and preservation | Factory-applied grease supports long-term, maintenance-free operation. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 25/70 |
| Format | BNS – wide, normal, standard height |
| Model | Wide 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] | 120 |
| Length of runner block [mm] | 105 |
| Height of runner block [mm] | 29.75 |
| Height runner block with guide rail [mm] | 35 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C100 [N] | 36200 |
| 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] | 500 |
| Note: Max. acceleration amax | If Fcomb◡> 2.8 • Fpr : amax = 50 m/s2 |
| Maximum permissible linear speed vmax [m/s] | 5 |
| 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] | 1.34 |
| Dynamic load capacity C50 [N] | 45600 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 50200 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 1700 |
| 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] | 1350 |
| 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] | 1870 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 620 |
| 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] | 490 |
| 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] | 680 |
| Pitch T guide rail [mm] | 80 |
| Dimension A (profiled rail systems) [mm] | 120 |
| Dimension A1 (profiled rail systems) [mm] | 60 |
| Dimension A2 (profiled rail systems) [mm] | 69 |
| Dimension A3 (profiled rail systems) [mm] | 25.5 |
| Dimension B (profiled rail systems) [mm] | 105 |
| Dimension B1 [mm] | 76.5 |
| Dimension E1 [mm] | 107 |
| Dimension E2 (profiled rail systems) [mm] | 60 |
| Dimension E8 (profiled rail systems) [mm] | 35 |
| Dimension E8.1 (profiled rail systems) [mm] | 83.5 |
| Dimension E9 (profiled rail systems) [mm] | 4.9 |
| Dimension E9.1 (profiled rail systems) [mm] | 11.3 |
| Dimension H [mm] | 35 |
| Dimension H1 (profiled rail systems) [mm] | 29.75 |
| Dimension H2 (profiled rail systems) [mm] | 23.55 |
| Dimension K1 (profiled rail systems) [mm] | 15.4 |
| Dimension K2 (profiled rail systems) [mm] | 15.5 |
| Dimension K3 (profiled rail systems) [mm] | 5.2 |
| Dimension K4 (profiled rail systems) [mm] | 5.2 |
| Dimension N1 (profiled rail systems) [mm] | 9.35 |
| Dimension N2 (profiled rail systems) [mm] | 7.05 |
| Dimension N6 (profiled rail systems) [mm] | 14.4 |
| 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 | M3x2 mm |
| Dimension S9 thread diameter (profiled rail systems) | M3 |
| Dimension S9 thread diameter x lead with tolerance (profiled rail systems) [mm] | +4.5 |
| Dimension S9 lead [mm] | 2 |
| Dimension T1 min [mm] | 10 |
| Dimension V1 [mm] | 7.5 |
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