The ball runner block is highly precise and characterized by the following product features:
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.

  • Area of application: For high rigidity requirements
  • Excellent dynamic characteristics
  • Significantly reduced frictional oscillations and low friction force level, particularly under external load
  • Maximum precision
  • Patented entry zone increases the travel accuracy up to a factor of six
  • Attachments on the ball runner block can be mounted from above and below
  • Lube fittings with metal threads on all sides
  • End-face fastening thread for all attachments
  • Integrated all-round sealing
  • High torque load capacity
  • Different preload classes
  • High rigidity in all load directions – permits applications with just one runner block per rail
  • Improved rigidity under lift-off and side loading conditions due to two additional mounting screw holes at the center of the ball runner block
  • Maximum system rigidity due to preloaded O-arrangement
  • Optional integrated, inductive and wear-free measuring system
  • Ball runner block pre-lubricated at the factory
  • Can be used on all SNS/SNO ball guide rails
  • Long-term lubrication is possible over several years
  • The same high load ratings in all four main directions of loading

Product attributes

Nominal size [mm]

20

Format

FNS - flange, normal, standard height

Type of construction

High-precision ball runner block

Ball chain

Without ball chain (standard)

Material (profiled rail systems)

Carbon steel

Preload class

C1 - Low preload

Accuracy class

H - Highly accurate

Seal

SS - Standard seal

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 C [N]

23400

Footnote dynamic load capacity C

Determination of the dynamic load capacities and load moments is based on a 100 000 m travel as per DIN ISO 14728-1. Often only 50 000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.26.

Static longitudinal moment load capacity ML0 [Nm]

260

Static torsional moment load capacity Mt0 [Nm]

380

Max. acceleration 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

Dynamic torsional moment load capacity Mt [Nm]

300

Dynamic torsional moment load capacity Mt footnote

Determination of the dynamic load capacities and load moments is based on a 100 000 m travel as per DIN ISO 14728-1. Often only 50 000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.26.

Dynamic longitudinal moment load capacity ML [Nm]

200

Dynamic longitudinal moment load capacity ML footnote

Determination of the dynamic load capacities and load moments is based on a 100 000 m travel as per DIN ISO 14728-1. Often only 50 000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.26.

Static load capacity C0 [N]

29800

Version

Ball rail system

Permissible ambient temperature

- 10 °C ... + 80 °C

Footnote 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

Footnote friction coefficient μ

Without friction of seal

Weight [kg]

0.45

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 (profiled rail systems) [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 (profiled rail system) [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 (profiled rail systems) [mm]

13

Dimension V1 [mm]

6

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