HELI-WORM GEAR BOX

BI-DIRECTIONAL

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0.16 H.P. to 5 H.P.

7.5:1 to 240:1 Ratio

Long Life

Precision Rollers

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Support & Assitance Provided

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On Time Deliveries

Overview

Gearboxes, also known as gear drives, are the arrangement of their shafts or the way that they mount to the driven equipment. However, it is important to realize that shaft arrangement and mounting are two different characteristics of the drive.

Therefore, it is important to know both aspects to successfully determine the best gearbox for your application. The shaft arrangement on a gear drive is the location of the high-speed and low-speed shaft extensions relative to each other.

This is dictated by the position of the motor and driven equipment and is sometimes constrained by the physical space of the application. The orientation of high and low-speed shafts as they relate to the naming of the different types of gear drives may seem very simple, but there are reasons why you would choose one over the others when determining the best gearbox for your application.

The primary determinant for selecting the type of gearbox is space limitations in a system. Because the shafts are oriented differently, your driving equipment, or motor, will be in a different location depending on which type of gear drive is selected.

Benefits & Uses:

Industries Applications
Agriculture Heavy duty bulk material handling
Automotive Heavy duty process specific
Cement Water treatment
Energy Aggregate & construction equipment
Forest Grain handling
Mining
Cement & Aggregate Light to medium duty conveying
Sand-Gravel Belt conveyors
Mining Classifiers
Grain Separators
Baggage/Package Handling
Pic-Pac-Retrieval
Energy
Metal Processing
Agriculture Conveying
Automotive Reclaimers/stackers
Cement & Aggregate Crushers
Energy Mills
Mining Feeders
Pumps
Dryers
Mixers/blenders
Agitators
Loaders/unloaders
Elevators
Agriculture Conveying
Food & Beverage Reclaimers/stackers
Cement Crushers
Forest Mills
Mining Feeders
Pumps
Dryers
Mixers/blenders
Agitators
Loaders/unloaders
Elevators

Specifications

Technical Specifications

Selection of Heli-Worm Gearbox (Input 1500 RPM)

Model HW-50 HW-60 HW-70 HW-80 HW-90 HW-110 HW-130 HW-150
Gear Output Capacity
Ratio I1 I2 RPM
75 3 25 20 HP1 0.70 1.13 1.48 1.90 2.72 4.44 5.94 8.64
KW1 0.53 0.85 1.11 1.43 2.04 3.33 4.46 6.48
T2 185 299 392 503 720 1175 1573 2287
DE 74 74 74 74 74 74 74 74
M-HP1 0.33 0.5 0.75 1 1.5 2 3 5
M-KW1 0.2475 0.375 0.5625 0.75 1.125 1.5 2.25 3.75
M-T2 87 132 199 265 397 529 794 1324
SF 2.12121 2.26 1.9733 1.9 1.81333 2.22 1.98 1.728
90 3 30 16.67 HP1 0.59 0.84 1.32 1.66 2.42 3.99 5.35 8.10
KW1 0.44 0.63 0.99 1.25 1.82 2.99 4.01 6.08
T2 187 267 419 527 769 1268 1700 2573
DE 74 74 74 74 74 74 74 74
M-HP1 0.33 0.5 0.75 1 1.5 2 3 4
M-KW1 0.2475 0.375 0.5625 0.75 1.125 1.5 2.25 3
M-T2 105 159 238 318 477 635 953 1271
SF 1.78788 1.68 1.76 1.66 1.61333 1.995 1.783333 2.025
120 3 40 12.5 HP1 0.43 0.68 1.08 1.31 1.81 3.25 4.10 6.48
KW1 0.32 0.51 0.81 0.98 1.36 2.44 3.08 4.86
T2 172 272 433 525 725 1302 1643 2596
DE 70 70 70 70 70 70 70 70
M-HP1 0.25 0.33 0.5 0.75 1 1.5 1.5 2
M-KW1 0.1875 0.2475 0.375 0.5625 0.75 1.125 1.125 1.5
M-T2 100 132 200 301 401 601 601 801
SF 1.72 2.0606 2.16 1.74667 1.81 2.1666667 2.733333 3.24
150 3 50 10 HP1 0.34 0.51 0.84 1.13 1.33 2.51 3.50 5.13
KW1 0.26 0.38 0.63 0.85 1.00 1.88 2.63 3.85
T2 165 248 409 550 647 1221 1703 2496
DE 68 68 68 68 68 68 68 68
M-HP1 0.25 0.25 0.33 0.5 0.5 1 2 2
M-KW1 0.1875 0.1875 0.2475 0.375 0.375 0.75 1.5 1.5
M-T2 122 122 161 243 243 487 973 973
SF 1.36 2.04 2.5455 2.26 2.66 2.51 1.75 2.565
180 3 60 8.33 HP1 0.27 0.40 0.65 1.00 1.10 2.14 3.13 4.32
KW1 0.20 0.30 0.49 0.75 0.83 1.61 2.35 3.24
T2 148 220 357 550 604 1176 1720 2374
DE 64 64 64 64 64 64 64 64
M-HP1 0.25 0.25 0.33 0.5 0.5 1 1.5 2
M-KW1 0.1875 0.1875 0.2475 0.375 0.375 0.75 1.125 1.5
M-T2 137 137 181 275 275 550 824 1099
SF 1.08 1.6 1.9697 2 2.2 2.14 2.086667 2.16
210 3 70 7.14 HP1 0.22 0.38 0.59 0.83 0.87 1.85 2.79 3.64
KW1 0.17 0.29 0.44 0.62 0.65 1.39 2.09 2.73
T2 132 228 355 499 523 1112 1677 2188
DE 60 60 60 60 60 60 60 60
M-HP1 0.25 0.25 0.33 0.33 0.33 1 1.5 2
M-KW1 0.1875 0.1875 0.2475 0.2475 0.2475 0.75 1.125 1.5
M-T2 150 150 198 198 198 601 902 1202
SF 0.88 1.52 1.7879 2.51515 2.63636 1.85 1.86 1.82
240 3 80 6.25 HP1 0.16 0.26 0.39 0.57 0.74 1.07 1.71 2.45
KW1 0.12 0.20 0.29 0.43 0.56 0.80 1.28 1.84
T2 104 170 254 372 483 698 1116 1599
DE 57 57 57 57 57 57 57 57
M-HP1 0.25 0.25 0.25 0.25 0.25 0.33 0.5 0.75
M-KW1 0.1875 0.1875 0.1875 0.1875 0.1875 0.2475 0.375 0.5625
M-T2 163 163 163 163 163 215 326 489
SF 0.64 1.04 1.56 2.28 2.96 3.2424242 3.42 3.266667

Features

Salient Features

Speed Variations:

By feeding fixed speed to Variator, steeples speed variation can be obtained from

  • Max. Speed = 1.7 x Input speed to
  • Min. Speed = 1/7 x input speed
  • Max.Speed/Min.Speed = 12:1 to 3:1 depending upon selection

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Torque Multiplier:

When speed is reduced, Variators can replace Gear Boxes.

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Speed Multiplier:

Up to 1.7 times input speed without necessity of speed increasing gear.

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High Output Torque – Over Load Capacity:

Up to the standstill of an electric motor of the same power acting as a mechanical clutch.

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High Efficiency:

Overall 85% throughout full speed range ideally used for constant power transmission applications in all types of Industries.

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Speed Holding:

Quite stable with uniform load and within 0.25% with Max. Load.

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Reliability:

Drive is highly reliable with long life as load is equally distributed on number of conical Rollers, which are hardened, and ground to close tolerance.

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Simple Design:
Can be attended by skilled fitter as no electronic/electrical parts/circuits are involved.

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Compactness:
High Power Transmission capacity with small dimensions.

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Speed Control:
Quick and simple. By rotating control knob in running condition only.

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Free From Noise And Vibrations:
No moving parts like Chins, Belts, etc. Drive is through rolling action of PRECISION ROLLERS, which are continuously lubricated. All components are well balanced.

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Bi-directional Rotation Of Output Shaft:
Clockwise/Anti Clockwise depending upon Input shaft rotation, viz. Anti Clockwise/Clockwise respectively.
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Totally Enclosed Unit:
Ideal for hazardous zones.
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Maintenance:
Practically maintenance free. Only ensure proper lubrication.
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Collinear Input & Output Shaft:
In-Line Input and Output Shafts.
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Before Selecting the Variator Consider Following:

Load Factors:

  • Uniform load: 1
  • Medium shock load: 1.5
  • Heavy shock load: 2

Service factors:

  • 8 Hours running – 1
  • 16 Hours running – 1.25
  • 24 Hours running – 1.5

Efficiencies of various driving elements used in drive system.

For frequent start/stop, reversal operation, and high moment of inertia load consult us

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For Further Reduction Use At The Output Shaft Of The Variator:

  • Chain drive (positive)
  • Belt drive (slip occurs) For reduction up to 4:1
  • Suitable reduction gear boxes (worm/helical) by Elmrad

Uses

Heli Worm Gear Box Uses and Applications

We shall use fA to designate the application factor (Ca or Ka in AGMA standards and Ka in ISO standards) pr external overload factor deriving from the operating characteristics of the driving and driven engines are defined according to uniform operation. Operation with light shocks and operation with medium shocks: also three classes of driven machine are defined according to uniform loads, medium shock loads, or heavy shock loads. Consult Table 1 for a general explanation.
Table 1 :-
Driven Machine
U M S
Uniform Operation Electric Motors, Turbines, Hydraulic Motors 1 1.25 1.75
Operation With Light Shocks Combustion engine with 4-6 cylinders 1.25 1.5 2
Operation With Medium Shocks Combustion engine with 1-6 cylinders 1.5 1.75 2.25
U = Machine with Uniforms Load
M = Machine with Medium Shock Load
S = Machine with Heavy Shock Load
Application Factors:
Load Factor Application Sector
U
M
AGITATORS
Uniform Product Density
Variable Product Density
U
M
ALIMENTARY
Mashers, Boilers, Screw feeders,
Blenders, Peelers, Cartoners
(1) U, M
M
S
WINCHES
Lifting
Dragging
Reel Winders
U
M
S
PEPER MILLS
Winders, Dryers, Couch Rolls,
Mixers, Extruders, Thickeners,
Cutters, Glazing Cylinders
M
S
CHEMICAL
Extruders, Printing Presses
Mixers
U
M
M
COMPRESSORS
Centrifugal
Rotating
Axial Piston
M
S
DREDGES
Conveyors
Extractors, Cutter Head Drives
M
M
S
BUILDING
Cement Mixers, Screw Feeders
Crushers, Batchers
Stone Breakers
U
M
M
ELEVATORS
Belt Type, Escalators
Bucket Conveyors, Hoists, Skip Hoists
Public Lifts, Mobile Scaffolding
M
M
(1) U, M
CRANES
Translation
Slew
Lifting
M
M
M
WOOD
Stackers
Transporters
Saws, Thicknessers, Routers
M
M
S
MACHINE TOOLS
Boring Machines, Broaching Machines, Shearing Machines
Bending Machines, Press Forgers
Power Hammers, Rolling Mills
U
M
MIXERS
Uniform Density Product
Variable Density Product
S
M
EARTH MOVING MACHINERY
Rotating Shovel Excavators
Transporters
U
M, S
M, S
PUMPS
Centrifugal
Double Acting Volumetric
Single Acting Volumetric
U
M
CONVEYORS
On rails
Belts
M
M
U
WATER TREATMENT
Screw Feeders, Disintegrators
Mixers, Settlers
Oxygenators
U
M
FAN UNITS
Small
Large

Mounting Dimensions

Mounting Dimensions

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