80
10
0
L=2
x
S+H+360
200
80
80
40
10
0
S
H
S
x
y
z
Fz
Fy
Fx
Mz
Mx
My
4
Operating parameters
Load Specifications
KRF
M
x max
[Nm]
M
y max
[Nm]
M
z max
[Nm]
F
y max
[N]
F
z max
[N]
50
175
175
2,500
2,500
|M
x
|
____
M
x max
+
|M
y
|
____
M
y max
+
|M
z
|
____
M
z max
+
|F
y
|
___
F
y max
+
|F
z
|
___
F
z max
≤1
Eight rollers, arranged play-free in a criss-cross pattern, ensure maximum load-carrying capacity with compact size.
Simplified method for determining the maximum permis-
sible load for the Roller Guides of a KRF:
Transmissible drive torque:
M
Amax
= 23 Nm
Operating load:
F
max
= 1000 N
Max. speed:
v
max
= 10 m/s
Max. acceleration:
a
max
= 10 m/s²
System-related frictional moment: M
frictional
= 2 Nm
Effective radius of pulley
r
W
= 23.1 mm
Tightening torque for the screws used:
M3 - 1.5 Nm
M5 - 6 Nm
M6 - 10 Nm
M8 - 25 Nm
The special Timing Belt:
Gearing type: AT profile, 5 mm pitch
Belt width: 25 mm +0/-0.5 mm
Special belt with 0.9 mm steel wires for high positioning accuracy
Wire strength: 4000 N
Specific spring rate: 0.998 x 10^6 N
Polyamide coating on teeth side, colour: grey/anthracite
Max. load capacity of Timing Belt: 1000 N limited by the tooth stability of the Timing Belt
Caution!
Timing Belt pretensioning:
max. 1‰
of the Timing Belt length
Linear Unit KRF 8 80 x40 ZR
0.0.641.21
L
min
400 mm
S
min
20 mm
H
max
5,760 mm
m
1
(basic unit)
6 kg
m
2
(per add. mm travel)
4.4 g/mm
