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December 17, 2019

Double Worm Gearing
The exclusive use of the involute helicoid thread form on the worm and gear provides for high efficiencies and lengthy service existence. The hardened, ground and polished alloy metal worm develops a simple, work hardened surface on the bronze equipment. For this reason, the worm gears use in and improve with extented service while additional gears are wearing out.
Product Features
Single,Double and Triple Reductions Ratios of 5:1 to 175,000:1
Center distances of 2″ to 20″
Drywell construction upon vertical units
Multi-mounting configurations
Solid shaft and hollow shaft designs
Fan cooled Oil level sight glass
30,000 PSI gray cast iron housings High-strength alloy steel on input and output shafts
Centrifugally cast phosphorous bronze gears
High-shock load capacity “C” Face motor flanges
Motor scoops
ouble Reduction Worm Gearbox
Ever-Power Double Decrease Worm Gearboxes are two stage worm reduction units.
A specifically designed primary worm decrease device is integrally mounted upon a standard single decrease Ever-Power worm gearbox which forms the second stage. The composite products provide the most small and rigid set up for large reduction of speed necessary for gradual shifting machinery. A wide selection of ratios up to 4900:1 is available.
Double Decrease Worm Gear Container Sizes Available around are 40, 50, 60, 75, 85, 100, 125, 150, 175, 200, 250, 300, 350, 430.
Nominal Gear Ratios: 100:1, 150:1, 200:1,300:1, 400:1, 600:1, 750:1, 1000:1, 1200:1, 2000:1, 2800:1
Nominal ratios listed certainly are a typical selection of commonly used ratios from the overall range of Ever-Power Double Reduction Worm Gear Box. Details of other ratios available on request.
Under Driven / Over Driven / Vertical Input or Output Shaft Version / Shaft Mounted Version / All types with motor installation adaptor /
motor – optional
The worm shafts are made of high quality case hardening steel, accurately generated, ground and super finished. The worm wheels comprise of phosphor bronze centrifugally cast rims of considerable sections welded to rigid centers. Considerable flexibility of shaft layout can be permissible with all types of Double Reduction systems. The dimension drawing for every series shows the different shaft handing arrangements and the correct reference should always be quoted when ordering.
Our regular 700 Series – the heart of Ever-Power swiftness reducer product line – has been serving industry reliably for over 40 years. Its confirmed modular design has set the sector standard for overall performance and may be the most imitated item in today’s worm gear speed reducer market. But why double reduction worm gearbox settle for a knock-off when you can have the initial – from Ever-Power.

Specifications
11 basic single reduction sizes
8 basic double reduction sizes
1/6 – 25 HP
5:1 – 100:1 ratios single reduction
100:1 – 3600:1 ratios double reduction
Non-flanged, NEMA C-face quill, and coupled input styles
Projecting and hollow output shafts
Projecting diameters from 1/2″ to 2-1/4″
Hollow result bore diameters from 5/8″ to 3-7/16″ (with over 20 bore sizes in stock)
Features
Literature
Video
Contact
Product Features
The 700 Series’ large oil reservoir provides efficient heat dissipation and lubrication for longer operating life.
Its multi-position mounting flexibility allows for installation in virtually any position.
Housings are straddle-milled, best and bottom, for precise alignment of horizontal and vertical bases.
Internal baffles assure positive, leak-free venting.
The 700 Series’ rugged casing, fabricated of fine-grained, gear-quality cast iron, provides optimum strength for maximum durability, and also greater precision during worm and gear alignment.
Ever-Power’s 700 Series high-strength bronze worm equipment is straddle mounted between heavy-duty tapered roller bearings to increase thrust and overhung load capacities, sizes 713-760.
Our 700 Series’ high-strength steel output shaft assures convenience of high torque and overhung loads.
Pipe plugs allow easy fill up, level, and drain in any mounting position.
The 700 Series’ super-finished oil-seal diameters on both input and output shafts extend seal existence.
Both 2D and 3D CAD drawings are available in our eCatalog.
DOUBLE REDUCTION GEAR
Ever-Power Double Decrease Worm Gear Devices are constructed using two one reduction worm gear systems. The primary worm gear unit is specially designed to mount integrally on a standard single worm gear device which forms the secondary stage. The complete gear unit becomes compact and rigid in arrangement for slow shifting machinery. A wide variety of ratio from 75:1 to 4900:1 is available. These gear units are particularly suitable for high torque slow-quickness drives. Worm gearing conforms to BS-721.
Worm Gear Swiftness Reducers: Double Reduction
Double Decrease Worm Gear Speed
Reducer Product Configuration
EP, Inc. manufacturers dual reduction Worm Gear reducers that are designed to last. Double decrease units are created with the same top quality parts as the single reduction Worm Gear reducers.