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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R165181420 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-020-FNS-C1-N-1
- Size 20
- Format FNS: Width = flange, 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 = 75.0 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R165181420 Original Rexroth Linear Bearing Block Specifications
| Parameter | Value | Explanation |
|---|---|---|
| Nominal Size | 20 mm (0.787 inches) | Defines the size of the linear bearing block, ensuring compatibility with corresponding guide rails. |
| Format | FNS (Flange, Normal, Standard Height) | Indicates flanged width, normal length, and standard height for versatile application fit. |
| Material | Carbon Steel | Provides strength and durability for heavy-duty industrial environments. |
| Preload Class | C1 – Low Preload | Ensures smooth motion with minimal internal resistance, ideal for dynamic applications. |
| Accuracy Class | N – Normal | Standard precision suitable for most industrial linear motion systems. |
| Dynamic Load Capacity C100 | 23,400 N | Maximum load the block can handle during motion (100,000 m travel, per DIN ISO 14728-1). |
| Static Load Capacity C0 | 29,800 N | Maximum load the block can withstand when stationary. |
| Dynamic Torsional Moment Mt100 | 300 Nm | Measures resistance to twisting forces during motion (100,000 m travel). |
| Static Torsional Moment Mt0 | 380 Nm | Resistance to twisting forces when stationary. |
| Maximum Acceleration amax | 500 m/s² (1640 ft/s²) | Maximum acceleration rate, reduced to 50 m/s² under specific combined loads. |
| Maximum Linear Speed vmax | 5 m/s (16.4 ft/s) | Fastest permissible speed for safe and efficient operation. |
| Friction Coefficient μ | 0.002–0.003 | Low friction ensures energy efficiency and reduced wear. |
| 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 | 0.45 kg (0.99 lbs) | Lightweight design for easy integration into motion systems. |
| Width of Runner Block | 63 mm (2.480 inches) | Width dimension for mounting and rail compatibility. |
| Length of Runner Block | 75 mm (2.953 inches) | Length dimension for system design and rail interaction. |
| Height of Runner Block | 25.35 mm (0.998 inches) | Height dimension for vertical clearance in assemblies. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | FNS – flange, normal, standard height |
| 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] | 63 |
| Length of runner block [mm] | 75 |
| Height of runner block [mm] | 25.35 |
| Height runner block with guide rail [mm] | 30 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C100 [N] | 23400 |
| 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] | 0.45 |
| Dynamic load capacity C50 [N] | 29500 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 29800 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 380 |
| 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] | 300 |
| 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] | 380 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 250 |
| 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] | 200 |
| 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] | 260 |
| Pitch T guide rail [mm] | 60 |
| Dimension A (profiled rail systems) [mm] | 63 |
| Dimension A1 (profiled rail systems) [mm] | 31.5 |
| Dimension A2 (profiled rail systems) [mm] | 20 |
| Dimension A3 (profiled rail systems) [mm] | 21.5 |
| Dimension B (profiled rail systems) [mm] | 75 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 49.6 |
| Dimension E1 [mm] | 53 |
| Dimension E2 (profiled rail systems) [mm] | 40 |
| Dimension E3 (profiled rail systems) [mm] | 35 |
| Dimension E8 (profiled rail systems) [mm] | 32.5 |
| Dimension E9 (profiled rail systems) [mm] | 7.3 |
| Dimension H [mm] | 30 |
| Dimension H1 (profiled rail systems) [mm] | 25.35 |
| 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] | 11.8 |
| Dimension K2 (profiled rail systems) [mm] | 11.8 |
| Dimension K3 (profiled rail systems) [mm] | 3.35 |
| Dimension K4 (profiled rail systems) [mm] | 3.35 |
| Dimension N1 (profiled rail systems) [mm] | 7.7 |
| Dimension N2 (profiled rail systems) [mm] | 5.2 |
| Dimension N6 (profiled rail systems) [mm] | 13.2 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S1 (profiled rail systems) [mm] | 5.3 |
| Dimension S2 (profiled rail systems) | M6 |
| 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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