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R167121320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-025-BNS-C1-H-1
- Size 25
- Format BNS: Width = wide, 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 = 105.0 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
- High-Quality Linear Bearing Blocks
- 100% HIWIN Original, Offical, No Fake
- This Model Is In Stock
R167121320 Original Rexroth Linear Bearing Block Specifications
The Bosch Rexroth R167121320 is engineered for precision and reliability. Below is a detailed comparison of its key technical parameters, including metric and imperial conversions for global applicability.
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Size | 25/70 | Nominal size of the linear bearing block, indicating compatibility with 25 mm (0.984 in) wide rails and 70 mm (2.756 in) overall width. |
| Width of runner block (A) | 120 mm (4.724 in) | Total width, ensuring stable load distribution across the rail. |
| Height of runner block (H) | 35 mm (1.378 in) | Vertical height, contributing to a compact yet robust design. |
| Length of runner block (B) | 105 mm (4.134 in) | Overall length, balancing stability and dynamic performance. |
| Dynamic load capacity (C) | 36200 N | Maximum load the block can handle during motion, based on 100,000 m travel (multiply by 1.26 for 50,000 m comparison). |
| Static load capacity (C0) | 50200 N | Maximum load the block can withstand when stationary, ensuring structural integrity. |
| Dynamic torsional moment load capacity (Mt) | 1350 Nm | Ability to resist twisting forces during dynamic operation, critical for high-torsion applications. |
| Static torsional moment load capacity (Mt0) | 1870 Nm | Resistance to twisting forces when stationary, enhancing system stability. |
| Dynamic longitudinal moment load capacity (ML) | 490 Nm | Capacity to handle longitudinal moments during motion, ensuring smooth performance. |
| Static longitudinal moment load capacity (ML0) | 680 Nm | Longitudinal moment resistance when stationary, supporting heavy loads. |
| Friction coefficient (μ) | 0.002 … 0.003 | Low friction ensures energy-efficient motion and reduced wear. |
| Maximum acceleration (amax) | 500 m/s² | Supports high-speed applications with rapid acceleration, limited to 50 m/s² under combined loads. |
| Maximum permissible linear speed (vmax) | 5 m/s | Ensures high-speed operation without compromising stability. |
| Permissible ambient temperature | -10 °C to +80 °C (14 °F to 176 °F), up to 100 °C (212 °F) for short periods | Wide temperature range supports diverse industrial environments. |
| Weight | 1.350 kg (2.976 lbs) | Lightweight yet durable, balancing ease of installation with strength. |
| Material | Carbon steel | High-strength material ensures durability and resistance to wear. |
| Seal type | SS – Standard seal, without ball chain | Protects internal components from contaminants, enhancing longevity. |
| Preload class | C1 – Low preload | Reduces internal forces, ensuring smooth motion and minimal wear. |
| Accuracy class | H – Highly accurate | Delivers precise positioning for high-precision applications. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 25/70 |
| Format | BNS – wide, normal, standard height |
| Model | Wide 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] | 120 |
| Length of runner block [mm] | 105 |
| Height of runner block [mm] | 29.75 |
| Height runner block with guide rail [mm] | 35 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C100 [N] | 36200 |
| 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] | 1.35 |
| Dynamic load capacity C50 [N] | 45600 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 50200 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 1700 |
| 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] | 1350 |
| 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] | 1870 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 620 |
| 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] | 490 |
| 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] | 680 |
| Pitch T guide rail [mm] | 80 |
| Dimension A (profiled rail systems) [mm] | 120 |
| Dimension A1 (profiled rail systems) [mm] | 60 |
| Dimension A2 (profiled rail systems) [mm] | 69 |
| Dimension A3 (profiled rail systems) [mm] | 25.5 |
| Dimension B (profiled rail systems) [mm] | 105 |
| Dimension B1 [mm] | 76.5 |
| Dimension E1 [mm] | 107 |
| Dimension E2 (profiled rail systems) [mm] | 60 |
| Dimension E8 (profiled rail systems) [mm] | 35 |
| Dimension E8.1 (profiled rail systems) [mm] | 83.5 |
| Dimension E9 (profiled rail systems) [mm] | 4.9 |
| Dimension E9.1 (profiled rail systems) [mm] | 11.3 |
| Dimension H [mm] | 35 |
| Dimension H1 (profiled rail systems) [mm] | 29.75 |
| Dimension H2 (profiled rail systems) [mm] | 23.55 |
| Dimension K1 (profiled rail systems) [mm] | 15.4 |
| Dimension K2 (profiled rail systems) [mm] | 15.5 |
| Dimension K3 (profiled rail systems) [mm] | 5.2 |
| Dimension K4 (profiled rail systems) [mm] | 5.2 |
| Dimension N1 (profiled rail systems) [mm] | 9.35 |
| Dimension N2 (profiled rail systems) [mm] | 7.05 |
| Dimension N6 (profiled rail systems) [mm] | 14.4 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S1 (profiled rail systems) [mm] | 6.7 |
| Dimension S2 (profiled rail systems) | M8 |
| Dimension S5 (profiled rail system) [mm] | 7 |
| Dimension S9 | M3x2 mm |
| Dimension S9 thread diameter (profiled rail systems) | M3 |
| Dimension S9 thread diameter x lead with tolerance (profiled rail systems) [mm] | +4.5 |
| Dimension S9 lead [mm] | 2 |
| Dimension T1 min [mm] | 10 |
| Dimension V1 [mm] | 7.5 |
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