When designing high-performance packaging machinery, engineering teams are frequently forced to choose between a compact design footprint or robust shaft-loading capabilities required to handle heavy radial stress.

High-speed indexing, heavy timing belts, and continuous cycling place immense overhung load stresses on output bearings. Standard planetary gearheads often require stepping up to a larger frame size just to survive the radial force—adding unneeded weight, taking up valuable space, and altering your design architecture.

DieQua’s PHCH Premium Planetary Servo Gearhead eliminates this barrier by maximizing overhung load capabilities within a highly compact, drop-in footprint.

The High-Load Challenge in Packaging Applications

Packaging OEMs face demanding operating conditions that rapidly degrade standard motion control components:

  • High Radial Stress: Heavy belt-and-pulley systems and direct-drive mechanisms place constant bending stress on the output shaft.

  • Continuous Washdowns: Exposure to harsh cleaning agents requires robust environmental sealing.

  • Acoustic Restraints: High-speed planetary designs can become a primary source of factory noise if not engineered precisely.

Instead of over-sizing the entire gearhead to handle these stresses, a smarter approach relies on specialized internal bearing geometry.

PHCH Series - High OHL, Superior Torque

Engineering Advantages of the PHCH Series

The PHCH Series is engineered specifically as a high-torque, inline helical gear reducer that solves these specific integration and reliability pain points.

1. Best-in-Class Overhung Load Capacities

Unlike standard gearheads that utilize traditional ball bearings, the PHCH Series incorporates heavy-duty taper roller bearings. This internal layout delivers radial load capacities ranging from 3,600 N up to 11,380 N, alongside axial capacities up to 8,830 N. This allows design engineers to manage high bearing stress reliably without moving to a larger frame size.

2. High-Precision Helical Planetary Gearing

The series utilizes a caged planet carrier paired with a premium helical planetary gear set. Helical gears offer a continuous tooth engagement profile compared to straight spur gears, resulting in exceptionally high torque density (ranging from 37 Nm to 600 Nm) and quiet drive operation.

3. True Drop-In Integration Flexibility

Modifying an existing machine footprint to accommodate a new gearhead is costly and time-consuming. The PHCH Series features a modular design with a square servo interface accommodating motor frames from 60 mm through 220 mm. It delivers standard mounting compatibility, making it seamless to drop into existing configurations.

4. Zero-Maintenance, Washdown-Ready Enclosure

To ensure a long service life in demanding factory environments, every unit is:

  • Factory-Sealed for Life: Pre-filled with premium synthetic lubricant, removing maintenance requirements from the end-user.

  • IP65 Rated Protection: Fully sealed enclosure protects internal components against water ingress during washdown procedures.

Technical Configuration Overview

  • Standard Sizes: Available in 4 distinct sizes (70, 90, 115, and 155)

  • Output Shaft Diameters: Ranging from 16 mm through 40 mm

  • Ratios Available: 8 single-stage and up to 13 two-stage reduction ratios

   
Frame Size (mm) 70, 90, 120, 155
Ratio

8 – single stage; 

13 – double stage
Nominal Input Speed (rpm) 3,000 – 4,000
Max Input Speed (rpm) 5,000 – 8,000
Backlash (arc-min)

4-8 single stage; 

6-10 two stages

Select the Right Fit for Your Next Project

Balancing high radial loading with tight space constraints shouldn’t require a design compromise. By optimizing internal bearing configurations, the PHCH series gives engineers the freedom to design compact, high-throughput packaging systems that stand up to real-world industrial environments.

To review full dimensions, torque ratings, and exact ratio options, you can download the complete product documentation or contact our application engineering team today.