Double Worm Gearing
The exclusive usage of the involute helicoid 
thread form on the worm and gear offers high efficiencies and long service life. The hardened, surface and polished alloy steel worm develops a simple, work hardened surface area on the bronze gear. Because of this, the worm gears use in and improve with prolonged service while various other 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 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 double reduction worm gearbox reduction Worm Gearbox
Ever-Power Double Decrease Worm Gearboxes are two stage worm decrease units.
A specially designed primary worm reduction device is integrally mounted on a standard single reduction Ever-Power worm gearbox which forms the second stage. The composite devices provide the most small and rigid arrangement for large reduced amount of speed necessary for slow shifting machinery. A wide variety of ratios up to 4900:1 is available.
Double Reduction Worm Gear Box Sizes Available with us 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 Double Reduction Worm Gear Box. Details of 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 made from top 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 versatility of shaft layout can be permissible with all types of Double Reduction units. The dimension drawing for each series shows the different shaft handing arrangements and the correct reference should always be quoted when ordering.
Our standard 700 Series – the heart of Ever-Power speed reducer products – has been serving industry reliably for over 40 years. Its confirmed modular design has set the industry standard for performance and is the most imitated product in the current worm gear acceleration reducer market. But why settle for a knock-off when you can have the original – from Ever-Power.
Specifications
11 basic solitary 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 stock)
Features
Literature
Video
Contact
Product Features
The 700 Series’ huge oil reservoir provides efficient heat dissipation and lubrication for longer operating life.
Its multi-position mounting flexibility permits installation in practically 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 housing, fabricated of fine-grained, gear-quality cast iron, provides maximum strength for maximum 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 increase 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, level, and drain in virtually 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 Reduction Worm Gear Units are constructed using two solitary reduction worm gear units. The principal worm gear device is specially designed to mount integrally on a standard single worm gear unit which forms the secondary stage. The complete gear unit becomes compact and rigid in set up for slow moving machinery. A wide range of ratio from 75:1 to 4900:1 is available. These equipment units are particularly ideal for high torque slow-rate drives. Worm gearing conforms to BS-721.
Worm Gear Acceleration Reducers: Double Reduction
Double Decrease Worm Gear Speed
Reducer Product Configuration
EP, Inc. manufacturers double decrease Worm Gear reducers that are built to last. Double decrease units are made with the same high quality components as the single reduction Worm Gear reducers.