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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R165381420 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-020-FLS-C1-N-1
- Size 20
- Format FLS: Width = flange, length = long, 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 = 91.0 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
Product Features
- High Precision: Patented entry zone increases travel accuracy up to sixfold, ideal for applications demanding exact positioning.
- Robust Design: Carbon steel construction ensures durability under high loads and harsh conditions.
- Low Friction: Friction coefficient of 0.002–0.003 minimizes oscillations, enhancing efficiency in dynamic motion.
- Long-Term Lubrication: Pre-lubricated with Dynalub 510, supporting maintenance-free operation for years.
- Versatile Mounting: Attachments can be mounted from above or below, compatible with all SNS/SNO ball guide rails.
- Enhanced Rigidity: Preloaded O-arrangement and two central mounting screw holes improve stability under side and lift-off loads.
- Optional Measuring System: Supports an inductive, wear-free integrated measuring system for precise monitoring.
Engineered for versatility, the Rexroth R165381420 supports high torque loads and maintains consistent performance across all four loading directions. Its patented entry zone enhances travel accuracy by up to six times, making it a top choice for applications requiring pinpoint precision
Technical Specifications
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 20 mm (0.787 inches) | Defines the block’s compatibility with 20 mm guide rails, ensuring precise fit in linear systems. |
| Format | FLS – Flange, Long, Standard Height | Flanged design with extended length for enhanced stability and load distribution. |
| Material | Carbon Steel | High-strength material ensures durability and resistance to wear under heavy loads. |
| Preload Class | C1 – Low Preload | Minimizes internal forces, reducing friction for smoother motion in high-speed applications. |
| Accuracy Class | N – Normal | Standard precision suitable for most industrial applications, balancing cost and performance. |
| Dynamic Load Capacity C100 | 29,600 N (6,650 lbf) | Maximum load the block can handle during motion (100,000 m travel per DIN ISO 14728-1). |
| Static Load Capacity C0 | 41,800 N (9,395 lbf) | Maximum stationary load the block can withstand without deformation. |
| Dynamic Torsional Moment Mt100 | 380 Nm (280 ft-lb) | Resistance to twisting forces during motion, critical for stability in dynamic applications. |
| Static Torsional Moment Mt0 | 540 Nm (398 ft-lb) | Twisting resistance when stationary, ensuring structural integrity under load. |
| Maximum Acceleration amax | 500 m/s² (1,640 ft/s²) | Maximum acceleration the block can handle, supporting high-speed operations. |
| Maximum Linear Speed vmax | 5 m/s (16.4 ft/s) | Top speed for linear motion, ensuring efficiency in fast-moving systems. |
| Friction Coefficient μ | 0.002–0.003 | Low friction reduces energy loss, enhancing system efficiency and longevity. |
| Weight | 0.59 kg (1.3 lbs) | Lightweight design minimizes inertia, ideal for dynamic applications. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods | Operates reliably across a wide temperature range, with consultation needed for extreme cold. |
| Width of Runner Block | 63 mm (2.48 inches) | Provides a wide base for stability and load distribution. |
| Length of Runner Block | 91 mm (3.58 inches) | Extended length enhances contact area, improving rigidity. |
| Height of Runner Block | 25.35 mm (0.998 inches) | Compact height ensures compatibility with space-constrained systems. |
| Pitch T Guide Rail | 60 mm (2.36 inches) | Standard rail spacing for secure mounting and alignment. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | FLS – flange, long, 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] | 91 |
| 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] | 29600 |
| 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] | 0.59 |
| Dynamic load capacity C50 [N] | 37300 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 41800 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 480 |
| 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] | 380 |
| 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] | 540 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 430 |
| 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] | 340 |
| 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] | 490 |
| 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] | 91 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 65.6 |
| 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] | 19.8 |
| Dimension K2 (profiled rail systems) [mm] | 19.8 |
| 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 R165381420 linear bearing block?
The block features a C1 low preload class, which reduces internal forces for smoother motion in high-speed applications.
2. Can the R165381420 be used in high-temperature environments?
It operates reliably from -10 °C to +80 °C (14 °F to 176 °F), with short-term tolerance up to 100 °C (212 °F). Consult Bosch Rexroth for extreme conditions.
3. Is the block compatible with all Rexroth guide rails?
Yes, it is designed for use with all SNS/SNO ball guide rails, ensuring versatile integration.
4. How often does the block require lubrication?
The block is pre-lubricated with Dynalub 510, supporting long-term, maintenance-free operation for several years.
5. What is the dynamic load capacity of the R165381420?
The dynamic load capacity is 29,600 N (C100) for 100,000 m travel and 37,300 N (C50) for 50,000 m travel, per DIN ISO 14728-1.
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