Rotary feedthroughs with ALMA flange and long solid shaft

For high rotational speeds High level of positional accuracy

These rotary feedthroughs are equipped with the ALMA flange and provide the user with a large degree of freedom during installation.

The recipient can be designed to exactly suit the individual installation requirements. Another advantage is the higher installation and positional accuracy of the rotary feedthroughs in recipients ensured by the ALMA flange. No additional components are required for centering and exact positioning.

Technical data

Leakage rate: < 1 x 10^-8 mbar x l/s
Operating temp., non-cooled: -20 bis 90 °C
Operating temperature, cooled: > 90 °C
Rotational speed: up to 10,000 rpm
Torque: up to 32 Nm
Pressure differential: up to 1 bar
Vacuum range: up to UHV
Shaft diameter: up to 15 mm
Flange diameter: up to 80 mm
Radial load: up to 200 N
Axial load: up to 150 N
Housing: Stainless steel
Shaft: Stainless steel, magnetic
Magnetic fluid: Maintenance-free

Available options

• Housing cooling
• Customer-specific versions

Model	ALMA-M-AF-008-V-U
Part number	1020632
Weight (kg)	0.300
Dimensions (mm)
Shaft diameter, vacuum side [Lg7]	8.0
Shaft diameter, atmospheric side [Lg7]	8.0
Shaft length, vacuum side [F]	30.0
Shaft length, atmospheric side [G]	23.0
Total length [A]	95.0
Length, atmospheric side [C+G]	57.0
Length, vacuum side [B+F]	38.0
Total housing length [B+C]	42.0
Housing length, vacuum side [B]	8.0
Housing length, atmospheric side [C]	34.0
Housing fit diameter, vacuum side [Tg7]	28.0
Housing diameter, vacuum side [R]	–
Housing diameter, atmospheric side [Pg7]	28.0
Length of parallel-key groove [H]	–
Distance from parallel-key groove to shaft end [I]	–
Width of parallel-key groove [JN9]	–
Flange diameter [M]	48.0
Flange length [E]	10.0
O-ring diameter [U]	34.0
Pitch circle diameter [N]	40±0,10
Through-hole diameter [S]	3.4 (6x)
Shaft specification
Max. rotational speed	10,000 min-1
Max. transmittable torque*	5.00 Nm
Friction torque	0.25 Nm
Max. axial load [Fa1]**	30.00 N
Max. axial load [Fa2]**	30.00 N
Max. radial load [Fr1]**	30.00 N
Max. radial load [Fr2]**	30.00 N

ALMA-M-AF-010-V-U
1020631
0.550
10.0
10.0
30.0
27.0
115.0
73.0
42.0
58.0
12.0
46.0
30.0
–
38.0
17.0
4.0
3.0
55.0
12.0
41.0
48±0,10
4.5 (6x)
10,000 min-1
9.00 Nm
0.3 Nm
50.00 N
50.00 N
75.00 N
75.00 N

ALMA-M-AF-012-V-U
1020630
0.950
12.0
12.0
35.0
30.0
150.0
85.0
65.0
85.0
30.0
55.0
37.0
36.0
45.0
20.0
5.0
4.0
66.0
12.0
47.0
56±0,10
5.5 (6x)
7,500 min-1
16.00 Nm
0.3 Nm
50.00 N
50.00 N
75.00 N
75.00 N

ALMA-M-AF-015-V-U
1020629
1.600
15.0
15.0
35.0
35.0
160.0
85.0
75.0
90.0
40.0
50.0
50.0
49.0
57.0
20.0
5.0
5.0
80.0
12.0
60.0
70±0,10
5.5 (6x)
9,000 min-1
32.00 Nm
0.4 Nm
150.00 N
150.00 N
200.00 N
200.00 N

*   The torque calculation is based on mean calculated values.
** The load calculation is based on assumed values, which cover 95 % of applications.
    Individual calculations can be made for borderline applications.