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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R166581320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-020-FKS-C1-H-1
- Size 20
- Format FKS: Width = flange, length = short, height = standard
- Runner block body made of unalloyed steel CS
- Preload class C1: Low 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 = 57.3 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
Key Product Features
- High Precision: Patented entry zone enhances travel accuracy by up to six times, ensuring exact positioning in linear guides.
- Low Friction: Friction coefficient of 0.002–0.003 minimizes oscillations, ideal for smooth operation in linear bearing applications.
- Long-Term Lubrication: Pre-lubricated with Dynalub 510 grease, supporting maintenance-free operation for years.
- Robust Design: High rigidity in all load directions allows single-block-per-rail setups, enhancing system stability.
- Versatile Mounting: Attachments can be mounted from above and below, with metal-threaded lube fittings on all sides for easy access.
- Interchangeability: Compatible with all SNS/SNO ball guide rails, offering flexibility in linear motion setups.
Technical Specifications
The R166581320 linear bearing block is designed to meet stringent performance requirements. Below is a detailed comparison of its technical parameters:
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 20 mm (0.787 in) | Defines the standard size for compatibility with linear guide rails, ensuring precise fitment. |
| Width of Runner Block (A) | 63 mm (2.480 in) | Provides sufficient surface area for stable load distribution in linear motion systems. |
| Length of Runner Block (B) | 57.3 mm (2.256 in) | Compact length suits applications with limited longitudinal space. |
| Height of Runner Block (H1) | 25.35 mm (0.998 in) | Standard height ensures alignment with guide rails for smooth operation. |
| Height with Guide Rail (H) | 30 mm (1.181 in) | Total height when paired with a rail, critical for system design clearance. |
| Dynamic Load Capacity (C100) | 15400 N (3462 lbf) | Maximum dynamic load for 100,000 m travel, indicating robust performance under motion. |
| Dynamic Load Capacity (C50) | 19400 N (4361 lbf) | Higher load capacity for 50,000 m travel, offering flexibility for shorter travel distances. |
| Static Load Capacity (C0) | 16500 N (3709 lbf) | Maximum static load the block can withstand without deformation. |
| Dynamic Torsional Moment (Mt100) | 200 Nm (147.5 ft-lb) | Measures resistance to twisting forces during 100,000 m travel, ensuring stability. |
| Static Torsional Moment (Mt0) | 210 Nm (154.9 ft-lb) | Static resistance to torsional forces, critical for stationary applications. |
| Dynamic Longitudinal Moment (ML100) | 83 Nm (61.2 ft-lb) | Resistance to longitudinal forces during 100,000 m travel, enhancing durability. |
| Static Longitudinal Moment (ML0) | 89 Nm (65.6 ft-lb) | Static resistance to longitudinal forces, ensuring reliability under load. |
| Maximum Acceleration (amax) | 500 m/s² (1640 ft/s²) | Indicates the block’s ability to handle rapid speed changes in dynamic systems. |
| Maximum Linear Speed (vmax) | 5 m/s (16.4 ft/s) | Maximum allowable speed for safe and efficient linear motion. |
| Friction Coefficient (μ) | 0.002–0.003 | Low friction ensures energy efficiency and smooth operation in linear bearings. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods | Wide temperature range supports diverse industrial environments. |
| Weight | 0.3 kg (0.661 lb) | Lightweight design reduces system inertia, ideal for high-speed applications. |
| Pitch T Guide Rail | 60 mm (2.362 in) | Distance between mounting holes on the rail, critical for installation accuracy. |
| Seal Type | SS – Standard Seal | Protects against contaminants, extending the lifespan of the linear bearing block. |
| Lubrication | Initial lubrication with Dynalub 510 | Pre-lubricated for immediate use, reducing setup time and maintenance needs. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | FKS – flange, short, standard height |
| Model | High-precision ball runner block |
| Material | Carbon steel |
| Preload class | C1 – Low 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] | 63 |
| Length of runner block [mm] | 57.3 |
| 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] | 15400 |
| 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] | 0.3 |
| Dynamic load capacity C50 [N] | 19400 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 16500 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 250 |
| 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] | 200 |
| 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] | 210 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 110 |
| 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] | 83 |
| 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] | 89 |
| 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] | 57.3 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 31.9 |
| Dimension E1 [mm] | 53 |
| 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] | 22.95 |
| Dimension K2 (profiled rail systems) [mm] | 22.95 |
| 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 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 |
FAQ
1. What is the primary application of the Rexroth R166581320 linear bearing block?
It is designed for linear motion applications in restricted longitudinal spaces, such as CNC machines, automated assembly lines, and medical equipment.
2. What are the load capacities of the R166581320 ball runner block?
The dynamic load capacity is 15400 N (3462 lbf) for 100,000 m travel and 19400 N (4361 lbf) for 50,000 m travel, with a static load capacity of 16500 N (3709 lbf).
3. How does the R166581320 ensure long-term performance?
It features initial lubrication with Dynalub 510 grease, integrated all-round sealing, and a design that supports maintenance-free operation for several years.
4. Is the R166581320 compatible with other linear guide rails?
Yes, it is fully compatible with all SNS/SNO ball guide rails from Bosch Rexroth, offering flexibility in system design.
5. What is the operating temperature range for this linear bearing block?
It operates between -10 °C to +80 °C (14 °F to 176 °F), with short-term tolerance up to 100 °C (212 °F).
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