Stainless-steel gearboxes

The HDV-series gearboxes are intended for the use in the food industry. They are based on our proven standard gearboxes from the range of single-stage bevel gearboxes (V series) and have therefore the same external dimensions.

They vary in the following features:
All outside parts are made of high-quality stainless steel.
The shaft seal rings installed in the type have an additional dust lip.
The housing and the flanges do not contain any bores or other dust pockets.

Required mounting bores will be drilled application-specifically according to your specifications.
The dimensions of the gearboxes are identical with those of the V-type gearboxes.
Etched type plate
No vent filters
Surface roughness < Ra 0.8

Type HDV – Hygiene-design bevel gearboxes

The material selection, the design, and the surface finish ensure optimum cleaning properties and maximum hygiene. The stainless-steel design of all external components efficiently prevents any form of corrosion and is additionally acid-proof and alkaline-resistant. The typical product qualities such as high running smoothness, high efficiency, robustness, running accuracy are guaranteed, and an excellent ability to supply goes without saying.

Hygienic-design gearboxes are our response to the requirements of the pharmaceutical and food-processing industries.

Product features

  • All parts made of VA steel
  • Corrosion-proof
  • hygienic, powerful
  • Housing made of 1.4305 stainless steel
  • Maintenance-free

Application examples

  • Medical engineering
  • Food sector
  • Offshore
  • Beverage and filling machines
  • Cosmetics


ATEK bevel gearboxes have gear sets with high-quality spiral toothing made of hardened carburised steel.
A gear set comprises one bevel pinion (small number of teeth / small diameter) and one bevel gear (large number of teeth / large diameter).
Gear sets with spiral toothing offer the advantage of very favourable engagement factors (high meshing ratio).
Therefore they are predestined for usage with high loads, combined with optimal running smoothness and high transmission accuracy.

Construction types

Due to the modular system, different gearbox construction types can be configured.
The construction types vary in

Construction type consists of:
A0 to E0 1 gear set
F0 to K0 1 gear set + 1 bevel pinion or bevel gear

The variants differ in type and number of the shafts, the rotational direction of the shafts and their support by bearings.

Threaded mounting holes

All 6 sides of the gearboxes are machined and may be used as mounting surfaces.
The standard version has no threaded mounting holes.
Threaded mounting holes will be drilled according to your requirements.
You have the following available ordering Options:

Order code Threaded mounting holes are located in the housing surfaces on the gearbox side Threaded mounting holes are located in the flanges on the gearbox side
1, 2, 3, 4, 5, 6 1, 2, 4, 3, 5, 6


HDV 065 HDV 090 HDV 120 HDV 140
Thread size M6 x 12 M8 x 14 M10 x 16 M10 x 20
Grid spacing (mm) 45 70 100 110

Installation position

The gearboxes can be used in all installation positions.
The recommended installation position is the position in which the shafts are horizontal.
These are the installation positions 1 and 2. The installation position is defined by the gearbox side directed downwards during operation and will be indicated by the corresponding gearbox side.
Please contact us for consultation if the angle of the gearbox side directed downwards deviates more than 15° from the horizontal position.

Shaft designation – allocation to the gearbox sides

The fast-rotating shaft has the speed n1 and is identified by N1.
The bevel pinion is located on this shaft.
The slowly rotating shaft has the speed n2 and is identified by N2.
The bevel gear is located on this shaft.
The gearbox sides are identified by the numerals 1 to 6 (see Figure 4.2.1-1 Gearbox sides)

Preferred direction of rotation

If the clockwise (CW) direction of rotation (viewing direction from shaft end face of the fast-rotating shaft towards the gearbox centre) is selected, a 1 to 2 dB(A) lower noise level is generated.


The achievable efficiency depends on rotational speed, torque, installation position, sealing, and lubricant type.


The HDV-series gearboxes have lifetime lubrication.

Vent filter

No venting is provided.

Low-backlash construction

For low-friction running, the tooth space in the gear set is manufactured larger than the tooth.
When the direction of rotation is changed, this results in a rotation angle until the counter-rotating tooth flanks contact each other.
This rotation angle is called circumferential backlash.

Circumferential backlash, measuring method

The circumferential backlash is measured after the drive shaft (N1) has been fixed.
A force of around 2% of the nominal torque is applied to the output shaft (N2) in both rotational directions.
A tooth backlash will result between the two final positions. This can be measured as rotation angle and is indicated in minutes of arc [arcmin].

Circumferential backlash, type

Ordering option Gear set 1:1 2:1 3:1 4:1 5:1 6:1
/0000 Standard <=30 arcmin <=30 arcmin
/S2 Standard <=10 arcmin <=10 arcmin
/S1 Standard <=6 arcmin a.A.
/S0 Special gear set <=4 arcmin a.A.

Corrosion protection

Housing, flanges and shafts are made of rust-proof stainless steel.