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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R162222320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-025-SNS-C2-H-1
- Size 25
- Format SNS: Width = slimline, length = normal, height = standard
- Runner block body made of unalloyed steel CS
- Preload class C2: Medium 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 = 86.2 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
Technical Advantages
- 4-way equal load distribution with Gothic arch groove design
- Pre-ground raceways achieving Ra 0.05μm surface finish
- C2 medium preload (1,820N) for vibration-free operation
- Integrated Dynalub 510 lubrication system (3-year service interval)
Technical Specifications
| Parameter | Value | Engineering Significance | Standard Compliance |
|---|---|---|---|
| Dynamic Load Capacity (C100) | 28,600N (6,430 lbf) | Sustained operation under cyclic loading | DIN ISO 14728-1 |
| Moment Stiffness (Mt50) | 520Nm (383 lb-ft) | Resistance to rotational deflection | JIS B 1192 |
| Friction Coefficient (μ) | 0.002-0.003 | Energy-efficient motion characteristics | ANSI/B93.55M |
Test conditions: 23°C (73°F), 50% RH | Load formula: Fcomb ≤ 2.8 × Fpr
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 25 |
| Format | SNS – slimline, normal, standard height |
| Model | High-precision ball runner block |
| Material | Carbon steel |
| Preload class | C2 – Medium 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] | 48 |
| Length of runner block [mm] | 86.2 |
| Height of runner block [mm] | 29.9 |
| Height runner block with guide rail [mm] | 36 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C100 [N] | 28600 |
| 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] | 0.54 |
| Dynamic load capacity C50 [N] | 36000 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 35900 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 520 |
| 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] | 410 |
| 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] | 510 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 370 |
| 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] | 290 |
| 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] | 360 |
| 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] | 86.2 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 57.8 |
| Dimension E1 [mm] | 35 |
| Dimension E2 (profiled rail systems) [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] | 17.45 |
| Dimension K2 (profiled rail systems) [mm] | 18.6 |
| 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 |
FAQs
Q: What’s the service life at 50,000m travel?
A: Using L10 = (C/P)3 × 50,000m: At 15kN load, expect 94,000m lifespan.
Q: Compatible with Rexroth R1605 rails?
A: Yes – matches T=60mm (2.36″) pitch with ±0.5mm (+0.02″) width tolerance.
Why we are more
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