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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R165181320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-020-FNS-C1-H-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 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 = 75.0 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
Key Product Features
- High Rigidity: Supports applications with a single runner block per rail, thanks to its robust O-arrangement preload.
- Low Friction: Friction coefficient of 0.002–0.003 ensures smooth operation under external loads.
- Dynamic Performance: Dynamic load capacity of 23,400 N (5,260 lbf) and static load capacity of 29,800 N (6,700 lbf).
- Flexible Mounting: Attachments can be mounted from above or below, with metal-threaded lube fittings on all sides.
- Long-Term Lubrication: Factory pre-lubrication supports years of maintenance-free operation.
- Optional Measuring System: Inductive, wear-free integrated system for precise monitoring.
Technical Specifications
| Parameter | Value | Explanation |
|---|---|---|
| Nominal Size | 20 mm (0.787 in) | Standard size for compatibility with R1605_ and R1607_ guide rails. |
| Width of Runner Block (A) | 63 mm (2.480 in) | Flange width for stable mounting and load distribution. |
| Length of Runner Block (B) | 75 mm (2.953 in) | Normal length ensures compact yet robust design. |
| Height of Runner Block (H1) | 25.35 mm (0.998 in) | Standard height for consistent rail alignment. |
| Height with Guide Rail (H) | 30 mm (1.181 in) | Total height including rail for system integration. |
| Dynamic Load Capacity (C100) | 23,400 N (5,260 lbf) | Load capacity for 100,000 m travel per DIN ISO 14728-1. |
| Static Load Capacity (C0) | 29,800 N (6,700 lbf) | Maximum static load the block can withstand. |
| Dynamic Torsional Moment (Mt100) | 300 Nm (221 ft-lbf) | Torsional resistance for 100,000 m travel. |
| Static Torsional Moment (Mt0) | 380 Nm (280 ft-lbf) | Static torsional load capacity. |
| Maximum Acceleration (amax) | 500 m/s² (1,640 ft/s²) | Maximum acceleration under standard conditions. |
| Maximum Linear Speed (vmax) | 5 m/s (16.4 ft/s) | Top speed for linear motion applications. |
| Friction Coefficient (μ) | 0.002–0.003 | Low friction for efficient energy use and smooth motion. |
| Weight | 0.45 kg (0.992 lb) | Lightweight for easy integration and handling. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F) | Operating range, with 100 °C (212 °F) for short durations. |
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 | 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] | 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 |
FAQ
1. What is the preload class of the Rexroth R165181320 linear bearing block?
The R165181320 features a C1 low preload class, ensuring smooth motion with minimal resistance.
2. Can this linear bearing block be used with different guide rails?
Yes, it is interchangeable with all SNS/SNO ball guide rails, offering flexibility in system design.
3. What is the maximum operating temperature for the R165181320?
It operates from -10 °C to +80 °C (14 °F to 176 °F), with short-term tolerance up to 100 °C (212 °F).
4. How often does the R165181320 require lubrication?
Pre-lubricated with Dynalub 510, it supports long-term lubrication for several years, reducing maintenance.
5. What applications is the R165181320 best suited for?
It is ideal for CNC machining, automated assembly, and robotics requiring high rigidity and precision.
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