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Custom Planetary Gear

HM Manufacturing is a leading producer of simple and complex planetary gear systems. At HM, we work with all three planetary gear structures; meshed-planet, stepped-planet and multi-stage. Custom helical internal rings can be included in any of our planetary gear systems. Planetary gearheads are high precision, tight tolerance, motion control devices that generate substantial torque for their size, while maintaining low backlash — making them suited for wide ranging tasks. 

​Planetary gearboxes operate smoothly and powerfully for servo system applications in which accurate and repeatable motion is essential. ​With its inherent in-line shafting and cylindrical casing, planetary gearing is often recognized as the compact alternative to standard pinion and gear reducers.
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With our in-house gear shaping, milling, hobbing, turning and grinding machines, HM produces the highest quality custom planetary gears, suitable for your specific project.​ Let HM manufacture assemble and deliver complete planetary gear systems for your blanket order needs.
Planetary Gear Types
Simple
Simple planetary gears have one sun, one ring, one carrier and one planet set. In a simple planetary setup, input power turns the sun gear at high speed. As the planet carrier turns, it delivers low-speed, high-torque output.

Compound
Compound planetary gear systems or trains have at least two planet gears attached in line to the same shaft, rotating and orbiting at the same speed while meshing with different gears. Compounded planets can have varied tooth numbers, as can the gears they mesh with. The wide variety allows for many mechanical possibilities and more reduction per stage. With compound planetary systems, the planets can mesh with or revolve around both fixed and rotating external gears simultaneously.

Meshed
​Meshed planetary gear system contains at least two or more planet gears that mesh with each other and work together in the planet train.

Stepped
Stepped planetary gear system has a shaft connection between two planets in each planet train.

Multi-Stage 
A multi stage planetary gear system has two or more planet sets to create one large compounded system. 

Helical Internal Rings 
Helical internal rings are used in the planetary system as the main component holding the system with the other planet gears together. Helical gears can be used for heavy load capacity due to the comparable gear sizes and numbers of planets. Since helical gears are angled, not straight toothed, even more teeth mesh at once. The helix shape included in system allows for higher torque-to-weight ratio, larger reduction ratio, and more flexible configurations.
 
HM Manufacturing Order Processing Advantages 
We encourage our customers to place 12 month blanket purchase orders to accommodate for annual requirements. This in turn allows us to hold materials exclusively for our customer and can usually be dispatched within one business day.
  • Blanket custom planetary gears purchase orders eliminate lead times.
  • A single planetary gear purchase order is far economical than many purchase orders.
  • Costs associated with Shelf-space or storage space can be avoided by our customers.
  • Cost certainty, as product price remains fixed throughout the term
HM Manufacturing Order Processing Advantages
We encourage our customers to place 12 month blanket purchase orders to accommodate for annual requirements. This in turn allows us to hold materials exclusively for our customer and can usually be dispatched within one business day.
  • Blanket orders for Custom Timing Belt Pulleys eliminate lead times.
  • A single pulley purchase order is far more economical than many purchase orders.
  • Costs associated with shelf-space or storage space can be avoided by our customers.
  • We want to help you with cost certainty as product price remains fixed throughout the term.
​Timing Belt Pulley Materials
​Steel for Timing Pulley
  1018 (HR, CF)
  1045 (HR, CF, TG&P)
  1117 (HR, CF)
  1141 (CF, Q&T)
  1144 (HR, CF, Q&T)

Stressproof A311 Timing Pulley
  1215 (CF)
  
Fatigueproof Timing Pulley
  E.T.D. 150

Alloy Timing Pulley 
  4140 (HR/CF Annealed, Q&T, TG&P) 
  4150 (Q&T)
  8620 (HR)
  9310 (Aircraft grade) 

Bronze Timing Pulley 
  954 Aluminum Bronze  
​Stainless Steel for Timing Pulley  
  303
  304 
  316
  17-4

Aluminum Timing Pulley 
  2024-T351
  6061-T651
  7075-T651
    
Plastic Timing Pulley 
  Ketron (Food Grade)
  Delrin 
  Nylatron GSM (All colors)
  Nylatron LFG
  Nyloil
  Nylon (All colors)
  PEEK 1000 (Food Grade)
  UHMW-PE
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Contact us today for information and inquires about our Custom Planetary Gears
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1200 Henri Drive
​Wauconda IL 60084  
​Phone: (847) 487-8700
Fax:  (847) 487-8707  

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  • Products
    • Timing Belt Pulleys
    • Gears
    • Planetary Gears
    • V-Belt Sheaves
    • Shafts
    • Splines
  • Capabilities
    • Assembly
    • Broaching
    • Grinding
    • Hobbing
    • Milling
    • Turning
  • Industries
    • Food & Beverage
    • Aerospace
    • Marine
    • Packaging Equipment
    • Medical
  • Catalog
    • MXL Pulley Stock
    • XL Pulley Stock
    • L Pulley Stock
    • H Pulley Stock
    • 3M HTD Pulley Stock
    • 3M POWER GRIP GT
    • 5M HTD Pulley Stock
    • 5M POWER GRIP GT
    • 8M HTD Pulley Stock
    • 8M POWER GRIP GT
    • 8M RPP Pulley Stock
    • T5 Pulley Stock
    • AT5 Pulley Stock
    • T10 Pulley Stock
    • AT10 Pulley Stock
  • News
    • Media >
      • Podcasts
      • In The News
      • Press Kit
    • Blog
    • Affiliations
  • About
    • History
    • Management Team
    • Quality
    • Certifications
  • Contact
    • RFQ