www.hecogear.com distributor training session – planetary speed reducers
TRANSCRIPT
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Distributor Training Session – Planetary Speed Reducers
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Torque vs. Speed
Torque Multiplied
Speed Reduced
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Chain & Sprocket Reduction
Advantages– Single Reduction is
Common Low Cost– Common Components
Disadvantages– Safety Concerns– Maintenance– Life Span– Space Requirements
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Offset Gear Reducer
Single & Multiple ReductionHigh Ratios Available
Advantages• Through Shaft Mount• Readily Available• Low Cost
Disadvantages• Not in Line• Reversal of Rotation• High Shaft Bearing
Loads• Relatively Low
Efficiency
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Worm Gear Reducer
High RatiosAdvantages
– Self-Locking– Small Size
Disadvantages– Very Low Efficiency– Self-Locking
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AC Variable Speed Drive
Inverter Vector Servo
Advantages– Price, no power unit
Disadvantages– Hazardous Environments– Washdown Environment– Bearing Loads
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Planetary Gear Reducer
Single, Multiple, and Compound Reduction
High Ratios AvailableAdvantages
– 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
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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.
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Model 16 Single Reduction
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Model 20 Single Reduction
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Model 20D Double Reduction
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Model 50 Single Reduction
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Model 50D Double Reduction
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Model 52D Double Reduction
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Model 52T Triple Reduction
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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
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LSHT Hydraulic Motor Example
2000 Series Eaton Motor (in3/rev)
Model 16 Reducer
Equivalent Motor Size (in3/rev)
Torque (in.lbs)
Pressure(psi)
4.9
times 5.2:1 ratio
25.4 10,586 3000
6.2 32.2 13,577 3000
8.0 41.6 17,720 3000
9.6 49.9 20,942 3000
11.9 61.9 24,854 3000
14.9 77.5 22,093 2000
18.7 97.2 26,695 2000
24.0 124.8 27,439 1750
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LSHT Motor vs. High Speed Motor
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
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Heco’s Primary Competition
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
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Cost Comparison
Eaton 2000Eaton
with2000 Heco 16 Eaton 10,000
Cu.in/rev List-Price Cu.in/rev List-Price Cu.in/rev List-Price
4.9 $323 25.48 $1,228 20.65 $1,621 32%
6.2 $328 32.24 $1,233 29.22 $1,649 34%
8.0 $331 41.6 $1,236 40.55 $1,685 36%
11.90 $342 61.88 $1,247 57.36 $1,742 40%
Model 16 with Bearingless Motor vs 10,000 Series Eaton
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Electronics – RE Magnetic Pickups
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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
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Electronics – Application Ideas
RPM Measurement RPM Control and Feedback Product Counting with Data Acquisition Acceleration and Deceleration Ramp Control
with Feedback Verification of Operation
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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
Single Double
RPM Out
RPM Out
AGMA ISO SAE
0-25 0-40 5 220 90
25-100 3 100 80W
100-200
40-80 1 46 75W
200+ 80+ consult consult consult
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Sizing a Motor and Gear Reducer
Determine:– Required Torque– Required Output Speed– Available System Pressure
Example:– 33,000 in.lb. Output torque– 40 RPM output– 2,500 PSI available
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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.
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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
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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
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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
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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
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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.
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Competition Auburn
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Competition Fairfield
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Heco Product Differentiation
Continuous Torque Rating Ductile Iron Castings High Pressure Case Seals Removable Seal Carrier Planet Bearing Design Shaft Bearing Design
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Bearing Pre-Load
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Heco’s Hydraulic Torque Wrench
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Bearing Pre-Load vs. Bearing Life
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Planet Bearing
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Installation Drawings
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Installation Drawings
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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
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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
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Web Site – www.hecogear.com