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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.
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R165181320 Original Rexroth Linear Bearing Block 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

 

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