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Distributor Training Session – Planetary Speed Reducers

Distributor Training Session – Planetary Speed Reducers. Torque vs. Speed. Torque Multiplied Speed Reduced. Chain & Sprocket Reduction. Advantages Single Reduction is Common Low Cost Common Components Disadvantages Safety Concerns Maintenance Life Span Space Requirements.

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Distributor Training Session – Planetary Speed Reducers

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  1. Distributor Training Session – Planetary Speed Reducers

  2. Torque vs. Speed • Torque Multiplied • Speed Reduced

  3. Chain & Sprocket Reduction • Advantages • Single Reduction is Common Low Cost • Common Components • Disadvantages • Safety Concerns • Maintenance • Life Span • Space Requirements

  4. Offset Gear Reducer Single & Multiple Reduction High Ratios Available Advantages • Through Shaft Mount • Readily Available • Low Cost Disadvantages • Not in Line • Reversal of Rotation • High Shaft Bearing Loads • Relatively Low Efficiency

  5. Worm Gear Reducer High Ratios Advantages • Self-Locking • Small Size Disadvantages • Very Low Efficiency • Self-Locking

  6. AC Variable Speed Drive • Inverter • Vector • Servo • Advantages • Price, no power unit • Disadvantages • Hazardous Environments • Washdown Environment • Bearing Loads

  7. Planetary Gear Reducer Single, Multiple, and Compound Reduction High Ratios Available Advantages • High Efficiency • Output Rotation Same as Input Rotation • Readily Available • Low Cost per in.lb Torque • Compact Size • High Shaft Bearing Loads • Balanced Design Disadvantages • Through Shaft Not Available

  8. Reasons to Sell Reducers • Profitable • Selling reducers is profitable • Sell the Complete System • When you work on the design and specifications, why let someone else sell the reducer. • Reducers Help Solve Application Problems • The use of the HECO reducer can solve application problems such a cogging, side load, high torque requirements, and space limitations • Offer Customers a Single Product Source • If your customer has to look to someone else to supply products, you open the door to competition.

  9. Model 16 Single Reduction

  10. Model 20 Single Reduction

  11. Model 20D Double Reduction

  12. Model 50 Single Reduction

  13. Model 50D Double Reduction

  14. Model 52D Double Reduction

  15. Model 52T Triple Reduction

  16. LSHT Hydraulic Motor Input • Low Speed – High Torque (LSHT) • Single Stage Reduction and LSHT Motor Delivers Efficient Low Speed – High Torque Output • Wide Variety of Motor Displacements and Efficiencies to Suit Application • Low Motor Cost • Bearingless Motors Available

  17. LSHT Hydraulic Motor Example

  18. LSHT Motor Single Reduction Low Speed, Single Reduction Keeps Heat Low and Efficiency High LSHT Motors are Usually Low Cost Single Reduction and LSHT Motor Equals Efficiency of High Speed Motor with Double Reduction High Speed Motor Multiple Reduction High Speeds and Complex Gearing Develop More Heat and Efficiency Loss through Multiple Reductions High Speed Motors are Usually Expensive High Speed Motor is More Efficient, Double Reduction Reduces Efficiency LSHT Motor vs. High Speed Motor

  19. HECO with Hydraulic Motor Inherently Variable Speed Small Package at Point of Use Control of Acceleration to Maximize Component Life and Minimize Horsepower Can be Used in Hostile Environments with No Special Precautions Electric Motor Gearbox Complex and Expensive Speed Variation Large Total Package Size at Point of Use Electric Motor Requires High Horsepower to go from Zero to Full RPM in a Short Time Special Motor Required for Wet or Explosive Environments Heco’s Primary Competition

  20. Cost Comparison Model 16 with Bearingless Motor vs 10,000 Series Eaton

  21. Electronics – RE Magnetic Pickups

  22. Electronics - Features & Benefits • Enclosed Pick-up Point • Eliminates false signals and clogged signal points • Integral Mounting • Eliminates the need for belt drives and sprockets • Self Powered • Eliminates the need to run power to tach generation in many applications • Signal Amplifier Available • Amplifier available for low speed or high resolution applications • Adjustable Time Base • Allows direct readout in units of customers choosing

  23. Electronics – Application Ideas • RPM Measurement • RPM Control and Feedback • Product Counting with Data Acquisition • Acceleration and Deceleration Ramp Control with Feedback • Verification of Operation

  24. Lubrication Instructions • Unit must be filled with proper type and amount of lubrication before startup • Fill to ½ capacity for horizontal operation • Maximum oil temperature – 140oF continuous, 170oF intermittent

  25. Sizing a Motor and Gear Reducer • Determine: • Required Torque • Required Output Speed • Available System PressureExample: • 33,000 in.lb. Output torque • 40 RPM output • 2,500 PSI available

  26. Sizing a Motor and Gear Reducer • Calculate Total Displacement • Total Displacement = (torque * 2 pi) / pressure • Total Displacement = (33,000 * 6.28) / 2500 • Total Displacement = 82.9 in3/Rev.

  27. Sizing a Motor and Gear Reducer • Calculate Flow Required • Flow = (In3/Rev * Rev/Min) / In3/Gal • Flow = (82.9 * 40) / 231 • Flow = 14.35 Gal Theoretical • Assume 85% Volumetric Efficiency 14.35 / .85 = 16.88 Gal

  28. Sizing a Motor and Gear Reducer • Select Motor • Total Displacement / Gear Ratio = Motor Displacement • 82.9 / 4.8 = 17.27 in3/Rev • 82.9 / 6 = 13.82 in3/Rev • 82.9 / 24.96 = 3.32 in3/Rev • 82.9 / 31.2 = 2.66 in3/Rev

  29. Sizing a Motor and Gear Reducer • Select Motor • Assume 90% mechanical efficiency of the motor and gear box combination and the displacements would become: • 17.27 = 19.2 • 13.82 = 15.35 • 3.32 = 3.69 • 2.66 = 2.95

  30. Sizing a Motor and Gear Reducer • Single or Double Reduction • 40 RPM * 24.98:1 or 31.2:1 would result in motor speeds at or in excess of 1,000 RPM – beyond the range of most LSHT motors and at the low efficiency end of the high speed motor range. • 40 RPM * 4.8:1 or 6:1 would require motor speeds of 240 RPM and 192 RPM respectively which is in the best operating range of most LSHT Gerotor type motors

  31. Sizing a Motor and Gear Reducer • Sizing Summary • Select a Model 20 Single Reduction • with a 6:1 Ratio • and use a 19 in3/Rev (approx.) LSHT motor • that is rated for 17 GPM • and 2500 PSI.

  32. Competition Auburn

  33. Competition Fairfield

  34. Heco Product Differentiation • Continuous Torque Rating • Ductile Iron Castings • High Pressure Case Seals • Removable Seal Carrier • Planet Bearing Design • Shaft Bearing Design

  35. Bearing Pre-Load

  36. Heco’s Hydraulic Torque Wrench

  37. Bearing Pre-Load vs. Bearing Life

  38. Planet Bearing

  39. Installation Drawings

  40. Installation Drawings

  41. Heco Packaged Drives • Custom Power Unit Sized for Your Application Requirement • Design Specifications, Pricing Configurator, and Installation Drawings Online • 2-4 Week Lead-time for Standard Configuration

  42. Heco Success Factors • Distribution Background – Understand, Respect, and Support the Value Distributors Provide • Priced for High Distributor Margins • Customer Application Focus • Solution Oriented – Customized Products • Inventory Investment – Keep Lead-times Short • Responsive – Production Flexibility for Quick Shipments • Technology – Web Site Self-Service Tools

  43. Web Site – www.hecogear.com

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