Rotary feedthrough with ISO-K flange

This standard rotary feedthrough is designed to be mounted on an ISO-K flange and is available ex stock. The shaft is connected using parallel keys.

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
Pressure differential: up to 1 bar
Vacuum range: up to UHV
Housing: Stainless steel
Shaft: Stainless steel, magnetic
Magnetic fluid: Maintenance-free

Available options

  • Housing cooling
  • Customer-specific versions


ModelALMA-M-ISO-K-015-V-U
Part number 1020628
Weight (kg) 2.400
Dimensions (mm)
Shaft diameter, vacuum side 15g7
Shaft diameter, atmospheric side 15g7
Shaft length, vacuum side 35.0
Shaft length, atmospheric side 35.0
Total length 160.0
Length, atmospheric side 85.0
Length, vacuum side 75.0
Total housing length 90.0
Housing length, vacuum side 40.0
Housing length, atmospheric side 50.0
Housing diameter, vacuum side 60.0
Housing diameter, atmospheric side 70g7
Length of parallel-key groove 20.0
Distance from parallel-key groove to shaft end 5.0
Width of parallel-key groove 5N9
Flange diameter ISO-K DN63
Shaft specification
Max. rotational speed 9,000 min-1
Max. transmittable torque* 32.00 Nm
Friction torque 0.4 Nm
Max. axial load [Fa1]** 150 N
Max. axial load [Fa2]** 150 N
Max. radial load [Fr1]** 200 N
Max. radial load [Fr2]** 200 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.