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When Timing is Everything

Precision Helical Planetary Gearbox

Precision Helical Planetary Gearbox

Quick Facts

  • 33% more tooth contact with helical gear technology
  • Low backlash with up to 3 precision classes available
  • Ratios from 3:1 up to 100:1
  • Metric and NEMA models for virtually any type of motor
  • IP65 rated for washdown duty applications
  • Stainless steel model available
  • Drop-in units for a number of competitors
  • 5-year product warranty

Product Overview

This series features helical planetary gear technology that provides maximum gear-to-gear tooth contact for high-torque, low-backlash applications. Up to three different precision classes are available, with the highest class achieving less than 1 arc minute backlash. In-line and right-angle units are available with motor adaptor housings to accommodate virtually any type of metric or NEMA motor.

Series Frame Sizes Output Torque Backlash Ratios – 1-Stage Ratios – 2-Stage
thumb-cbCB 42mm-220mm 14 Nm-2000 Nm <1, <3, <5 3, 4, 5, 6, 7, 8, 9, 10 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cbrCBR 42mm-220mm 14 Nm-2000 Nm <1, <3, <5 3, 4, 5, 6, 7, 8, 9, 10, 14, 20 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-ceCE 42mm-220mm 14 Nm-2000 Nm <1, <3, <5 3, 4, 5, 6, 7, 8, 9, 10 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cerCER 42mm-220mm 14 Nm-2000 Nmm <1, <3, <5 3, 4, 5, 6, 7, 8, 9, 10, 14, 20 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cfCF 42mm-220mm 4 Nm-2000 Nm <1, <3, <5 3, 4, 5, 6, 7, 8, 9, 10 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cfrCFR 42mm-220mm 14 Nm-2000 Nm <1, <3, <5 3, 4, 5, 6, 7, 8, 9, 10, 14, 20 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cdCD 42mm-220mm 14 Nm-2000 Nm <1, <3, <5 4, 5, 7, 10 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cdsCDS 42mm-220mm 14 Nm-2000 Nmm <1, <3, <5 4, 5, 7, 10 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
thumb-cdrCDR 42mm-220mm 14 Nm-2000 Nmm <1, <3, <5 4, 5, 7, 10, 14, 20 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100
cnCN  NEMA 23 & 24 40 Nm-160 Nm <2, <4, <6 5, 10 25, 50, 100
cnrCNR  NEMA 23 & 34 40 Nm-150 Nm <2, <4, <6 5, 10 25, 50, 100, 200

 

Design Highlights

Candy Controls Precision Helical Planetary Gearbox - design highlights

Helical gears provide 33% more gear contact compared to spur gears, while the helix angle provides for a smooth mesh reducing both noise and backlash.

High performance is achieved by easing off the tooth profile and crowning the lead edge of each gear tooth. The result is superior gear mesh alignment and tooth contact.

This process provides a consistent tooth surface hardness of 840Hv for superior wear resistance and a core hardness of 30 HRc for durability.

This patented design places the sun gear bearing directly into the planet carrier, minimizing gear misalignment resulting in greater accuracy. This design also provides maximum radial load capacity, increasing design reliability and stiffness.

Each planet gear rotates on uncaged needle roller bearings optimizing contact points to increase design stiffness and torque capacity.

Each unit is factory lubricated with Nyogel 792D synthetic grease and sealed to IP65 standards. Food grade grease is available upon request.

This patented system reduces break-away torque and heat via a special coating on all sealing surfaces. The coating achieves a hardness of 3700Hv and is then ground to reduce wear and erosion. This technology prevents leaks and results in a service life greater than 20,000 hours.

The design features a triple split collet that provides a backlash free connection with 100% concentricity. This balanced design ensures smooth operation at high speeds.

These units are designed for assembly in a variety of NEMA and metric housings to provide dimensional drop-ins to several competitive units where higher quality and lower cost is required.