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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R166229420 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK SUPER CARBON STEEL KWD-025-SKS-C0-N-1
- Size 25
- Format SKS: Width = slimline, length = short, height = standard
- Runner block body made of carbon steel CS
- Preload class C0: Preload-free
- Accuracy class N: Normal
- 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 = 67.0 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
Product Features
The Rexroth R166229420 linear bearing block is engineered for seamless integration and long-term performance. Key features include:
- Self-Alignment: Compensates misalignments up to 10 arc minutes, reducing setup complexity.
- Compact Design: Slimline, short, and standard height (SKS) for space-constrained applications.
- High Load Capacity: Dynamic load capacity of 11,400 N (C100) and 14,400 N (C50), supporting heavy-duty operations.
- Low Friction: Friction coefficient of 0.002–0.003 ensures smooth motion and energy efficiency.
- Interchangeability: Compatible with all SNS ball guide rails within the same accuracy class, offering design flexibility.
- Maintenance-Friendly: Pre-lubricated with Dynalub 510 grease and equipped with metal-threaded lube fittings for easy re-lubrication.
Technical Specifications
The Rexroth R166229420 linear bearing block is designed to meet stringent industrial standards. Below is a detailed comparison of its technical parameters, with metric and imperial conversions for clarity.
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 25 mm (0.984 in) | Defines the standardized size for compatibility with guide rails. |
| Width of Runner Block | 48 mm (1.89 in) | Determines the lateral footprint, critical for compact installations. |
| Length of Runner Block | 67 mm (2.638 in) | Affects stability and load distribution along the rail. |
| Height of Runner Block | 29.9 mm (1.177 in) | Ensures proper alignment with guide rail height. |
| Dynamic Load Capacity C100 | 11,400 N (2,563 lbf) | Maximum load supported over 100,000 m travel, per DIN ISO 14728-1. |
| Dynamic Load Capacity C50 | 14,400 N (3,237 lbf) | Load capacity for 50,000 m travel, offering higher values for shorter distances. |
| Maximum Acceleration (amax) | 500 m/s² (1,640 ft/s²) | Indicates the block’s ability to handle rapid motion changes. |
| Maximum Permissible Linear Speed (vmax) | 5 m/s (16.4 ft/s) | Defines the top speed for safe and stable operation. |
| Permissible Ambient Temperature | -10°C to +80°C (14°F to 176°F), 100°C (212°F) short-term | Ensures reliability across a wide range of operating conditions. |
| Friction Coefficient (μ) | 0.002–0.003 | Low friction enhances efficiency and reduces wear. |
| Weight | 0.35 kg (0.772 lb) | Lightweight design minimizes system inertia. |
| Pitch T Guide Rail | 60 mm (2.362 in) | Spacing between mounting holes on the guide rail. |
| Maximum Torsional Moment (Mt max) | 65 Nm (47.94 ft-lb) | Measures resistance to twisting forces, critical for stability. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 25 |
| Format | SKS – slimline, short, standard height |
| Model | Super ball runner block |
| Material | Carbon steel |
| Preload class | C0 – Without preload (clearance) |
| Accuracy class | N – Normal |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Self-aligning for compensation of misalignments | With self-alignment |
| Width of runner block [mm] | 48 |
| Length of runner block [mm] | 67 |
| Height of runner block [mm] | 29.9 |
| Height runner block with guide rail [mm] | 36 |
| Lubrication | With initial lubrication and preservation |
| Maximum dynamic load Fmax [N] | 4400 |
| Dynamic load capacity C100 [N] | 11400 |
| 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 |
| Maximum permissible torsional moment Mt max [Nm] | 65 |
| 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] | 0.35 |
| Dynamic load capacity C50 [N] | 14400 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Dynamic torsional moment load capacity Mt50 [Nm] | 210 |
| 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] | 170 |
| 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. |
| Pitch T guide rail [mm] | 60 |
| Dimension A (profiled rail systems) [mm] | 48 |
| Dimension A1 (profiled rail systems) [mm] | 24 |
| Dimension A2 (profiled rail systems) [mm] | 23 |
| Dimension A3 (profiled rail systems) [mm] | 12.5 |
| Dimension B (profiled rail systems) [mm] | 67 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 38.6 |
| Dimension E1 [mm] | 35 |
| 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] | 25.35 |
| Dimension K2 (profiled rail systems) [mm] | 26.5 |
| Dimension K3 (profiled rail systems) [mm] | 5.5 |
| Dimension K4 (profiled rail systems) [mm] | 5.5 |
| Dimension N3 (profiled rail systems) [mm] | 9 |
| Dimension N6 (profiled rail systems) [mm] | 15.2 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S2 (profiled rail systems) | M6 |
| 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 |
FAQ
1. What is the preload class of the Rexroth R166229420 linear bearing block?
The R166229420 features a C0 preload class, meaning it operates without preload (clearance), ideal for applications requiring smooth motion without additional tension.
2. Can the R166229420 be used with other guide rails?
Yes, it offers limitless interchangeability with all SNS ball guide rails within the same accuracy class, providing design flexibility.
3. What is the maximum operating temperature for this linear bearing block?
The permissible ambient temperature ranges from -10°C to +80°C (14°F to 176°F), with short-term operation up to 100°C (212°F).
4. How does the self-aligning feature benefit my application?
The self-aligning mechanism compensates for alignment errors up to 10 arc minutes, reducing setup complexity and ensuring smooth operation in structures with tolerances.
5. What maintenance is required for the R166229420?
The block comes pre-lubricated with Dynalub 510 grease and features metal-threaded lube fittings for easy re-lubrication, minimizing maintenance needs.
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