Double Worm Gearing
The exclusive use of the involute helicoid thread form on the worm and gear provides for high efficiencies and long service existence. The hardened, ground and polished alloy steel worm develops a simple, work hardened surface area on the bronze gear. For this reason, the worm gears use in and improve with prolonged service while additional 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 on vertical units
Multi-mounting configurations
Solid shaft and hollow shaft designs
Fan cooled Essential 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 Reduction Worm Gearboxes are two stage worm reduction units.
A specially designed primary worm reduction device is integrally mounted on a standard double reduction worm gearbox Single reduction Ever-Power worm gearbox which forms the next stage. The composite devices provide the most small and rigid arrangement for large reduction of speed necessary for slower shifting machinery. A wide selection of ratios up to 4900:1 is available.
Double Reduction Worm Gear Package 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 selection of commonly utilized ratios from the entire range of Ever-Power Dual 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 mounting adaptor /
motor – optional
The worm shafts are made of high quality case hardening steel, accurately generated, ground and super finished. The worm wheels include phosphor bronze centrifugally cast rims of substantial sections welded to rigid centers. Considerable flexibility of shaft layout is definitely permissible with all types of Double Reduction models. The dimension 
drawing for each series shows the various shaft handing arrangements and the correct reference should be quoted when purchasing.
Our standard 700 Series – the heart of Ever-Power acceleration reducer product line – has been serving industry reliably for over 40 years. Its proven modular design has set the sector standard for overall performance and is the most imitated product in today’s worm gear acceleration reducer marketplace. But why settle for a knock-off when you’re able to 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 output 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 versatility allows for installation in virtually any position.
Housings are straddle-milled, top and bottom, for precise alignment of horizontal and vertical bases.
Internal baffles assure positive, leak-free venting.
The 700 Series’ rugged housing, fabricated of fine-grained, gear-quality cast iron, provides maximum strength for optimum durability, as well as 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 improve thrust and overhung load capacities, sizes 713-760.
Our 700 Series’ high-strength steel output shaft assures capacity for 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 life.
Both 2D and 3D CAD drawings are available in our eCatalog.
DOUBLE REDUCTION GEAR
Ever-Power Double Decrease Worm Gear Models are constructed using two solitary reduction worm gear units. The primary worm gear device is specially made to mount integrally on a typical single worm gear device 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-acceleration drives. Worm gearing conforms to BS-721.
Worm Gear Rate Reducers: Double Reduction
Double Decrease Worm Gear Speed
Reducer Product Configuration
EP, Inc. manufacturers dual decrease Worm Gear reducers that are designed to last. Double decrease units are made with the same high quality parts as the single decrease Worm Gear reducers.