PH planetary gearbox with rotating flange shaft and safety brake in the MB adapter. Gear ratios from 4:1 to 100:1. Maximum torque: 144 – 7,500 Nm. Brake rated torque: 8 – 160 Nm. Backlash: 1 – 3 arcmin. Efficiency: 93 – 96%. Safe braking in the event of power failure. Optional manual brake release, reduced backlash, servo motor, and ATLANTA rack and pinion.

Features of PH-MB Planetary Gearboxes with Brake

• High-performance servo gearboxes with increased torsional and radial rigidity.
• Output shaft: rotating flange shaft.
• Precision design with standard or reduced backlash.
• No positioning errors due to fractional gear ratios.
• Maintenance-free, with no oil changes or servicing required.
• Low-noise operation thanks to helical gears, max. 59 to 64 dB.
• Radial shaft seals: FKM on the input shaft and NBR on the output shaft.
• Low moments of inertia.
• Rigid output bearing due to preload.
• Continuous operation without additional cooling.
• Ambient temperature range from 0°C to 40°C (other temperature ranges available on request).
• Maximum gearbox housing temperature ≤ 90°C.
• Protection class IP65.
• Suitable for any mounting position.
• Synthetic gearbox oil, CLP HC ISO VG 150.
• Single primer paint coating in RAL7001 or RAL9005.

Optional Versions of PH-MB Planetary Gearboxes with Brake

• Manual brake release.
• Reinforced axial and radial output shaft bearings for sizes PH3 to PH5.
• Double sealing of the servo motor adapter.
• FKM (VITON) seals for high-temperature applications.
• Reduced backlash.
• Non-toxic special oils for the food industry upon customer request.
• Two or more paint coats in any RAL color.
• Washdown corrosion-resistant version.
• Protection class IP66.
• Modified oil quantity for bidirectional operation within a motion range of ±20° to ±90°.
• Cyclic reversing operation ≤ ±20° available on request.
• ZR-PH-ME / ZTR-PH-ME planetary rack-and-pinion drive with ATLANTA helical pinion.
• EZ / LM servo motors from Stober.
• PH-MB-EZ planetary servo gearmotor with two safety brakes.

Features of MB Adapters for PH Planetary Gearboxes

• Brake adapter integrated with the planetary gearbox.
• Functions as a holding brake.
• Braking from full speed, for example in the event of voltage loss or emergency stop situations.
• Can operate as a standalone brake or together with the motor brake as a redundant braking system.
• Electrically released spring-applied brake designed for dry operation.
• Equipped with a backlash-free plug-in coupling (jaw coupling), allowing easy motor removal while the braked axis remains in any position.
• Electrical release monitoring in the terminal box using a non-contact, wear-free proximity switch.
• Manual wear monitoring via air-gap inspection using a feeler gauge.
• Radial shaft seals made of FKM with dual sealing lips.
• Four oil drain openings protecting the brake from oil contamination in case of leakage.
• Differential-redundant system compliant with EN ISO 13849-1.
• Electrical connection via terminal box as standard, optionally with plug connector (not available together with release monitoring).
• In the de-energized state, braking is performed by spring force.
• The brake is released by a DC electromagnetic coil before the motor is started.
• Motor connectors or the motor adapter terminal box/plug connector are mounted in the 270° position as standard.
• Combined with the motor brake, it provides a dual-brake solution with exceptionally compact dimensions.