Our explosion-proof servo gear units provide precision, performance and reliability in potentially explosive atmospheres. They reliably transfer high speeds and torques while absorbing high overhung loads.
Explosion-proof, low-backlash planetary servo gear units: compact and reliable
 
									Explosion protection with a compact design, high speeds and high torques: That’s what sets our ATEX-compliant planetary servo gear units apart.
Our planetary gear units reliably deliver precision and cost-effectiveness in potentially explosive atmospheres. The PS.F series offers torques from 25 Nm to 3000 Nm.
They feature a consistently low rotational clearance and high torsional rigidity. All gear ratios from i = 3 to i = 100 are integers and finely stepped. This means that these explosion-proof servo gear units in equipment category II are also especially suitable for use with controllers that require integer resolution ratios.
Only half the solution without a motor? Then use our sophisticated modular concept and combine the explosion-proof servo gear units of the PS.F series with the explosion-proof servomotor of your choice.
Get in touch with us.
- Our experts know your industry and its requirements.
- Our global network ensures we are close wherever and whenever you need us.
- We have the know-how and tools to provide optimum advice and support.
Your benefits
- 
High flexibilitywith direct motor mounting because there is no longer any need for an adapter with clamp coupling.
- 
Incredible performancethanks to the high operating speeds and efficiency levels.
- 
High reliabilitydue to the wear-free gearing and consistently low rotational clearance.
Features
- Low-backlash ATEX-compliant planetary servo gear units
- Designed for torque classes from 25 Nm to 3000 Nm
- Available in two output variants:- PSF: B5 output, flange, smooth solid shaft (without key)
- PSKF: B5 output, flange, solid shaft with key
 
Technical data
PS.F series explosion-proof planetary servo gear units
| Type | Size, single-stage | Size, two-stage | Torque class Nm | Gear ratio i 3) 1-stage | Gear ratio i 3) 2-stage | Rotational clearance ` 1-stage | Rotational clearance ` 2-stage | 
|---|---|---|---|---|---|---|---|
| PSF | 121 | 122 | 25 | 3 / 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 8 4) / 4 5) / 2 6) | 10 / 6 / 3 | 
| PSF | 221 | 222 | 55 | 3 / 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 6 / 3 / 1 | 8 / 4 / 2 | 
| PSF | 321 | 322 | 110 | 3 / 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 6 / 3 / 1 | 8 / 4 / 2 | 
| PSF | 521 | 522 | 300 | 3 / 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 6 / 3 / 1 | 8 / 4 / 2 | 
| PSF | 621 | 622 | 600 | 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 4 / 2 / 1 | 6 / 3 / 1 | 
| PSF | 721 | 722 | 1,000 | 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 4 / 2 / 1 | 6 / 3 / 1 | 
| PSF | 821 | 822 | 1,750 | 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 4 / 2 / 1 | 6 / 3 / 1 | 
| PSF | 921 | 922 | 3,000 | 4 / 5 / 7 / 10 | 15 / 16 / 20 / 25 / 28 / 35 / 40 / 49 / 70 / 100 | 4 / 2 / 1 | 6 / 3 / 1 | 
Areas of application
 
									- Applications in potentially explosive atmospheres with air/gas or air/dust mixtures according to directive 94/9/EC (ATEX), or as of April 20, 2016 of the EU Directive 2014/34/EU (ATEX)
- Applications with equipment categories II2GD
- Use with air mixtures - With gases (G): in zones 1 and 2
- With dusts (D): in zones 21 and 22
 
- Examples:- Packaging machines
- Machine tools
- Filling and metering units
- Labeling machines
- FFS machines
- Incremental launches
- Pick & place robots
- Robot travel axes
- Flying saw
- Processing machines
- Handling gantries
- Conveyor belts
- Feed, pivoting and auxiliary axes
- Travel axes, additional axes
- Wood processing centers