Recommended Air Gap; Maximum Fastening Torques / Wrench Sizes / Thickness Of Braun Nuts - Braun A5S1-n Series Manual

1.4.2.2

Recommended Air Gap

The recommended air gap between the sensor front surface and the rotating part must be
observed. It increases with the size of the profile: For cams or milled grooves with their width,
distance and depth, for a gear with its module (= diameter / number of teeth). The field between
grooves or cams must be at least as large as the specified width (W), the depth D = at least 3
mm. Thickness of a gear or length (T) of a milled recess of at least 5 mm (plus a possible axial
displacement).
The guideline values given below for the profile size (D / W / T) of a rotor are the minimum
dimensions, they may be exceeded in any direction. However, the maximum permissible air gap
between the sensor and the pole wheel will not increase.
T
W
Figure 3: Information on profile size
Air gap in dependency of profile size
Module of a Diametrical Pitch
gear wheel
m1
m1.5
m2
m3
m4
1.4.3

Maximum fastening torques / wrench sizes / thickness of BRAUN nuts

Nut
M12 x 1
M14 x 1
M14 x 1.5
3/4"-16
M16 x 1
M18 x 1
3/4"-20
M18 x 1.5
5/8"-18
M22 x 1
D
min. width W of a
approx. groove wheel
25.40 mm 3 mm
16.93 mm 3 mm
12.70 mm 3 mm
8.47 mm 3 mm
6.35 mm 3 mm
Maximum
fastening torque
12 Nm
25 Nm
25 Nm
25 Nm
35 Nm
50 Nm
50 Nm
50 Nm
50 Nm
75 Nm
A5S1-n-Manual_EN_Rev02
Profile size of a
grooved wheel
D = min. 3 mm
W = min. 3 mm
T = min. 5 mm
A5S1DS0...-n
A5S1DD0...-n
Recommended
air gap
0.5 – 0.8 mm
0.5 – 1.0 mm
0.8 – 1.5 mm
0.8 – 2.0 mm
1.0 – 2.5 mm
thickness
wrench size
(+/- 0.5 mm)
WS 19 6 mm
WS 22 4 mm
WS 22 7 mm
WS 28 10 mm
WS 24 8 mm
WS 26 9 mm
WS 24 6 mm
WS 26 9 mm
WS 24 10 mm
WS 30 6 mm
2021_JAN_19
A5S1DS3...-n and DS4...-n
A5S1DD3...-n and DD4...-n
Recommended
air gap
--
--
0.3 – 0.8 mm
0.3 – 1.2 mm
0.5 – 1.5 mm
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