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R165122320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-025-FNS-C2-H-1
- Size 25
- Format FNS: Width = flange, length = normal, height = standard
- Runner block body made of unalloyed steel CS
- Preload class C2: Medium preload
- Accuracy class H: High
- 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 = 86.2 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R165122320 Original Rexroth Linear Bearing Block Parameters
| Parameter | Value | Engineering Significance |
|---|---|---|
| Nominal Size | 25 mm (0.98 inches) | Defines the standard size for compatibility with SNS/SNO ball guide rails. |
| Width of Runner Block (A) | 70 mm (2.76 inches) | Ensures stable mounting and load distribution across the block. |
| Length of Runner Block (B) | 86.2 mm (3.39 inches) | Determines the block’s footprint for precise integration into systems. |
| Height of Runner Block (H1) | 29.9 mm (1.18 inches) | Provides compact height for streamlined system design. |
| Height with Guide Rail (H) | 36 mm (1.42 inches) | Ensures proper alignment and clearance in rail systems. |
| Dynamic Load Capacity (C100) | 28600 N | Supports high dynamic loads for 100,000 m travel (per DIN ISO 14728-1). |
| Dynamic Load Capacity (C50) | 36000 N | Higher capacity for 50,000 m travel, ideal for shorter strokes. |
| Static Load Capacity (C0) | 35900 N | Handles substantial static loads without deformation. |
| Dynamic Torsional Moment (Mt100) | 410 Nm | Resists twisting forces during 100,000 m travel. |
| Static Torsional Moment (Mt0) | 510 Nm | Ensures stability under static torsional loads. |
| Dynamic Longitudinal Moment (ML100) | 290 Nm | Supports longitudinal forces during dynamic motion. |
| Static Longitudinal Moment (ML0) | 360 Nm | Maintains rigidity under static longitudinal loads. |
| Maximum Acceleration (amax) | 500 m/s² (1640 ft/s²) | Allows rapid motion changes in high-speed applications. |
| Maximum Linear Speed (vmax) | 5 m/s (16.4 ft/s) | Enables fast linear motion for efficient operations. |
| Friction Coefficient (μ) | 0.002–0.003 | Minimizes energy loss and wear during motion. |
| Weight | 0.65 kg (1.43 lbs) | Lightweight design reduces system inertia. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) short-term | Operates reliably in varied industrial environments. |
| Pitch T Guide Rail | 60 mm (2.36 inches) | Standardized spacing for rail mounting compatibility. |
| Material | Carbon Steel | Provides durability and strength for heavy-duty use. |
| Preload Class | C2 – Medium Preload | Balances rigidity and smooth motion for precision tasks. |
| Accuracy Class | H – Highly Accurate | Ensures minimal deviation in high-precision applications. |
| Seal Type | SS – Standard Seal | Protects against dust and debris, extending lifespan. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 25 |
| Format | FNS – flange, normal, standard height |
| Model | High-precision ball runner block |
| Material | Carbon steel |
| Preload class | C2 – Medium preload |
| Accuracy class | H – Highly accurate |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Self-aligning for compensation of misalignments | Without self-alignment |
| Width of runner block [mm] | 70 |
| Length of runner block [mm] | 86.2 |
| Height of runner block [mm] | 29.9 |
| Height runner block with guide rail [mm] | 36 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C100 [N] | 28600 |
| 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] | 0.65 |
| Dynamic load capacity C50 [N] | 36000 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 35900 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 520 |
| 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] | 410 |
| 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] | 510 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 370 |
| 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] | 290 |
| 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] | 360 |
| 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 (profiled rail systems) [mm] | 45 |
| Dimension E3 (profiled rail systems) [mm] | 40 |
| Dimension E8 (profiled rail systems) [mm] | 38.3 |
| Dimension E9 (profiled rail systems) [mm] | 11.5 |
| Dimension H [mm] | 36 |
| Dimension H1 (profiled rail systems) [mm] | 29.9 |
| Dimension H2 with cover strip (profiled rail systems) [mm] | 24.45 |
| Dimension H2 without cover strip (profiled rail systems) [mm] | 24.25 |
| Dimension K1 (profiled rail systems) [mm] | 12.45 |
| Dimension K2 (profiled rail systems) [mm] | 13.6 |
| Dimension K3 (profiled rail systems) [mm] | 5.5 |
| Dimension K4 (profiled rail systems) [mm] | 5.5 |
| Dimension N1 (profiled rail systems) [mm] | 9.3 |
| Dimension N2 (profiled rail systems) [mm] | 7 |
| Dimension N6 (profiled rail systems) [mm] | 15.2 |
| 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 | M3x5 mm |
| Dimension S9 thread diameter (profiled rail systems) | M3 |
| Dimension S9 lead [mm] | 5 |
| Dimension T1 min [mm] | 13 |
| Dimension V1 [mm] | 7.5 |
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