Double Worm Gearing
The exclusive utilization of the involute helicoid thread form on the worm and gear offers high efficiencies and lengthy service lifestyle. The hardened, ground and polished alloy steel worm develops a even, work hardened surface on the bronze equipment. Because of this, the worm gears wear in and improve with extented service while various other gears are wearing out.
Product Features
Single,Dual 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 unit is integrally mounted upon a standard single decrease Ever-Power worm gearbox which forms the second stage. The composite products provide the most compact and rigid set up for large reduced amount of speed necessary for sluggish shifting machinery. A wide range of ratios up to 4900:1 is offered.
Double Reduction Worm Gear Box 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 are a typical collection of commonly used ratios from the overall range of Ever-Power Dual Reduction Worm Gear Box. Information on other ratios available on request.
Under Driven / Over Driven / Vertical Input or Output Shaft Edition / Shaft Mounted Version / All types with motor installation adaptor /
motor – optional
The worm shafts are constructed with top quality case hardening steel, accurately generated, ground and super finished. The worm wheels comprise of phosphor bronze centrifugally cast rims of substantial sections welded to rigid centers. Considerable flexibility of shaft layout can be permissible with all sorts of Double Reduction devices. The dimension drawing for each series shows the different shaft handing arrangements and the appropriate reference should always be quoted when buying.
Our regular 700 Series – the heart of Ever-Power speed reducer products – has been serving industry reliably for over 40 years. Its tested modular style has set the industry standard for overall performance and is the most imitated product in the current worm gear quickness reducer marketplace. But why accept a knock-off when you can have the original – from Ever-Power.

Specifications
11 basic single reduction sizes
8 basic dual 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 share)
Features
Literature
Video
Contact
Product Features
The 700 Series’ huge oil reservoir provides efficient heat dissipation and lubrication for longer operating existence.
Its multi-position mounting flexibility allows for installation in virtually any position.
Housings are straddle-milled, best and bottom level, for precise double reduction worm gearbox 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 maximum strength for maximum durability, and also greater precision during worm and gear alignment.
Ever-Power’s 700 Series high-strength bronze worm gear 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 result shaft assures convenience of high torque and overhung loads.
Pipe plugs allow easy fill, level, and drain in virtually any mounting position.
The 700 Series’ super-finished oil-seal diameters on both input and output shafts extend seal lifestyle.
Both 2D and 3D CAD drawings can be found in our eCatalog.
DOUBLE REDUCTION GEAR
Ever-Power Double Reduction Worm Gear Models are constructed using two solitary reduction worm gear models. The principal worm gear device is specially made to attach integrally on a standard single worm gear unit which forms the secondary stage. The entire 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 Quickness Reducers: Double Reduction
Double Reduction Worm Gear Speed
Reducer Product Configuration
EP, Inc. manufacturers dual decrease Worm Gear reducers that are built to last. Double decrease units are made with the same top quality components as the single decrease Worm Gear reducers.