Linear Unit KRF

Linear Unit KRF

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1 5.760
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Technical Data

item products are based on different modular dimensions and their associated system grooves.Profiles from Lines 5, 6, 8, 10 and 12 each need corresponding sizes of fasteners.The profiles in Line X feature a Line 8 system groove but have a particularly flat surface withminimum curve radii that make them ideal for building sealed constructions.All substances are registered according to the REACH regulation.REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) ensures that usershave accurate information on the type and properties of operating materials, lubricants, etc.that they might come into contact with.Components that are RoHS-compliant contain no dangerous substances such as lead or cadmium.EC Directive 2002/95/EC (RoHS 1) restricts the use of certain substances in electronic devices and components.These include batteries, etc.


Article number 0.0.648.69
Line line 8
ESD-safe No
Cross-sectional area A = 15,58 cm2
Moment of Inertia, torsional It = 18,31 cm4
Moment of Inertia, x-axis Ix = 95,62 cm4
Moment of Inertia, y-axis Iy = 22,3 cm4
Total mass m = m1 + H * m2
Maximum operating load Fx max = 1.000 N
Maximum force in direction y Fy max = 2.500 N
Maximum force in direction z Fz max = 2.500 N
Weight m = 5,09 kg
Weight spec. length [g/mm] m = 4,699 g/mm
Weight, spec. Length m = 4,699 kg/m
Weight per length of the drive medium (timing belt, chain) mlz = 0,119 kg/m
Efficiency . = 1
Delivery unit 1 pce.
Basic mass (when stroke length = 0 mm) m1 = 5,09 kg
Mass per mm of stroke m2 = 4,699 g/mm
Max. acceleration amax  = 10 m/s2
Max. speed Vmax = 10 m/s
Repeat accuracy . = 0.1 mm
Mass moment of inertia when stroke length = 0 mm J0 = 1.123 kg mm2
Mass moment of inertia per kg of payload JN = 532,6 kg mm2/kg
Mass moment of inertia per m of stroke JH = 127 kg mm2/m
Stroke max. Hmax = 5.760 mm
max. drive torque . = 23 Nm
Maximum moment around the x axis Mx max = 50 Nm
Maximum moment around the y axis My max = 140 Nm
Maximum moment around the z axis Mz max = 140 Nm
Frictional moment . = 2 Nm
Safety clearance smin = 20 mm
Support width when Fy max. .  = 500 mm
Support width when Fz max. .  = 1.100 mm
Stroke h = 145 mm/r
Resistance Moment, x-axis Wx = 22,82 cm3
Resistance Moment, y-axis Wy = 11,15 cm3


Thanks to its criss-crossed roller guide and high-strength steel tracks, Linear Unit KRF is ideal for demanding applications.
Two Linear Units KRF can work in parallel via a synchronous drive, with Linear Unit KRF 8 80x40 ZR, synchronous drive responsible for guidance. As the shaft on the drive side passes straight through, a synchroniser shaft can be connected to it. Synchronising Set KRF 8 80 ZR (0.0.648.58) is used to make this connection.
Complete Linear Units with variable stroke length (H), Drive Unit and Reverse Unit, support profile with integrated Roller Guide on guide tracks, preset free of play. Timing-belt tensioning device integrated into Reverse Unit, ball-bearing-mounted pulleys.
Guide slide with eight-piece roller-bearing mounting, oil-lubricated roller contact (re-lubrication every 6 months or every 2500 km)
Acceleration: max. 10 m/s²
Stroke velocity: max. 10 m/s
Linear Unit KRF boasts exceptional precision and low-vibration linear movement. Repeat accuracy is ± 0.1 mm.
The mass of a Linear Unit KRF can be determined from the stroke length (without payload):
m = m1 + H x m2
Profile deflection
The maximum deflection, fmax of the system is governed by the dimension of the profile cross-section, the free profile length and the force applied. It should not exceed 1mm/m. The KRF profile must be given appropriate support if the linearity of movement has to be very precise.
h = horizontal orientation
v = vertical orientation
Maximum possible acceleration in relation to moved mass and installation orientation
Travel speed v in relation to input speed n (timing-belt drive)
Operational force Fx dependent on input torque M (timing-belt drives Fx > 500N)

Assembly Instructions


Load Calculation


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eCl@ss 11.0
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