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R165121320 Original Rexroth Linear Bearing Block

BALL RUNNER BLOCK CARBON STEEL KWD-025-FNS-C1-H-1

  • Size 25
  • 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 = 86.2 mm
  • Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
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R165121320 Original Rexroth Linear Bearing Block Specifications

The following table outlines the key technical parameters of the Rexroth R165121320 linear bearing block, providing a clear comparison of its capabilities:

Parameter Value Explanation
Nominal Size 25 mm (0.98 inches) Defines the standard size for compatibility with guide rails.
Width of Runner Block 70 mm (2.76 inches) Determines the block’s footprint for mounting purposes.
Length of Runner Block 86.2 mm (3.39 inches) Overall length affects stability and load distribution.
Height of Runner Block 29.9 mm (1.18 inches) Height impacts the block’s integration into compact systems.
Height with Guide Rail 36 mm (1.42 inches) Total height when paired with a compatible rail.
Dynamic Load Capacity C100 28,600 N Maximum load the block can handle during motion (100,000 m travel).
Static Load Capacity C0 35,900 N Maximum load the block can withstand when stationary.
Dynamic Torsional Moment Mt100 410 Nm Resistance to twisting forces during dynamic operation.
Static Torsional Moment Mt0 510 Nm Resistance to twisting forces when stationary.
Maximum Acceleration (amax) 500 m/s² Maximum acceleration for high-speed applications.
Maximum Linear Speed (vmax) 5 m/s Top speed for linear motion without compromising performance.
Friction Coefficient (μ) 0.002 – 0.003 Low friction ensures energy-efficient operation.
Permissible Ambient Temperature -10 °C to +80 °C (14 °F to 176 °F), 100 °C (212 °F) for short periods Operating temperature range for reliable performance.
Weight 0.65 kg (1.43 lbs) Lightweight design for easy integration.
Material Carbon Steel Durable material for long-term reliability.
Seal Type SS – Standard Seal Protects against dust and debris.
Preload Class C1 – Low Preload Minimizes internal forces for smoother motion.
Accuracy Class H – Highly Accurate Ensures precise positioning and repeatability.

Technical Attributes

Version Ball rail system
Nominal size [mm] 25
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] 70
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] 0.65
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] 70
Dimension A1 (profiled rail systems) [mm] 35
Dimension A2 (profiled rail systems) [mm] 23
Dimension A3 (profiled rail systems) [mm] 23.5
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] 57
Dimension E2 (profiled rail systems) [mm] 45
Dimension E3 (profiled rail systems) [mm] 40
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] 12.45
Dimension K2 (profiled rail systems) [mm] 13.6
Dimension K3 (profiled rail systems) [mm] 5.5
Dimension K4 (profiled rail systems) [mm] 5.5
Dimension N1 (profiled rail systems) [mm] 9.3
Dimension N2 (profiled rail systems) [mm] 7
Dimension N6 (profiled rail systems) [mm] 15.2
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 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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