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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R166221420 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK SUPER CARBON STEEL KWD-025-SKS-C1-N-1
- Size 25
- Format SKS: Width = slimline, length = short, height = standard
- Runner block body made of carbon steel CS
- Preload class C1: Low preload
- 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.
R166221420 Original Rexroth Linear Bearing Block Specifications
| Parameter | Value | Explanation |
|---|---|---|
| Nominal Size | 25 mm | Standard size for the linear bearing block, ensuring compatibility with corresponding guide rails. |
| Format | SKS (Slimline, Short, Standard Height) | Compact design for space-limited applications, balancing width, length, and height. |
| Material | Carbon Steel | High-strength material for durability and resistance to wear in industrial settings. |
| Preload Class | C1 (Low Preload) | Moderate preload reduces internal clearance, improving rigidity without excessive friction. |
| Accuracy Class | N (Normal) | Standard precision suitable for general industrial applications. |
| Dynamic Load Capacity (C100) | 11,400 N | Maximum dynamic load based on 100,000 m travel, per DIN ISO 14728-1. |
| Dynamic Load Capacity (C50) | 14,400 N | Dynamic load capacity based on 50,000 m travel, offering higher capacity for shorter strokes. |
| Static Load Capacity (C0) | 21,200 N | Maximum static load the block can withstand without deformation. |
| Maximum Dynamic Load (Fmax) | 4,400 N | Peak dynamic load for short-term operation under optimal conditions. |
| Maximum Torsional Moment (Mt max) | 65 Nm | Maximum permissible torsional moment for stable operation. |
| Dynamic Torsional Moment (Mt100) | 170 Nm | Torsional moment capacity based on 100,000 m travel. |
| Dynamic Torsional Moment (Mt50) | 210 Nm | Torsional moment capacity based on 50,000 m travel. |
| Maximum Acceleration (amax) | 500 m/s² (50 m/s² if Fcomb > 2.8 • Fpr) | High acceleration capacity for dynamic applications, with limits under combined loads. |
| Maximum Linear Speed (vmax) | 5 m/s | Maximum permissible speed for smooth and safe operation. |
| Friction Coefficient (μ) | 0.002 – 0.003 | Low friction ensures energy efficiency and smooth motion, excluding seal friction. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods | Wide temperature range for versatile industrial use; consult for negative temperatures. |
| Weight | 0.4 kg (0.88 lbs) | Lightweight design minimizes system inertia. |
| Width of Runner Block | 48 mm (1.89 inches) | Compact width for space-efficient installations. |
| Length of Runner Block | 67 mm (2.64 inches) | Short length optimizes space in constrained setups. |
| Height of Runner Block | 29.9 mm (1.18 inches) | Standard height ensures compatibility with SNS rails. |
| Height with Guide Rail | 36 mm (1.42 inches) | Total height when paired with a standard guide rail. |
| Pitch T Guide Rail | 60 mm (2.36 inches) | Standard pitch for mounting holes on the guide rail. |
| Lubrication | Initial lubrication with Dynalub 510 grease | Pre-lubricated for immediate use, with metal-threaded fittings for relubrication. |
| Seal Type | SS (Standard Seal) | Standard seal protects against contaminants without increasing friction. |
Technical Attributes
| Product 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 | C1 – Low preload |
| 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] | 0.4 |
| 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 |
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