Double Worm Gearing
The exclusive use of the involute helicoid thread form on the worm and gear provides for high efficiencies and long service 
lifestyle. The hardened, surface and polished alloy metal worm develops a soft, work hardened surface area on the bronze equipment. For this reason, the worm gears wear in and improve with prolonged service while other gears are deteriorating.
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 Reduction Worm Gearboxes are two stage worm reduction units.
A specially designed primary worm reduction unit is integrally mounted upon a standard single decrease Ever-Power worm gearbox which forms the second stage. The composite systems provide the most small and rigid arrangement for large reduced amount of speed necessary for slower moving machinery. A wide selection of ratios up to 4900:1 is available.
Double Decrease Worm Gear Container 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 certainly are a typical selection of commonly used ratios from the overall range of Ever-Power Double 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 sorts with motor mounting adaptor /
motor – optional
The worm shafts are constructed with high quality case hardening steel, accurately generated, ground and super finished. The worm wheels include phosphor bronze centrifugally cast rims of considerable sections welded to rigid centers. Considerable versatility of shaft layout is permissible with all types of Double Reduction devices. The dimension drawing for every series shows the different shaft handing plans and the correct reference should be quoted when buying.
Our standard 700 Series – the heart of Ever-Power rate reducer product line – has been serving industry reliably for over 40 years. Its confirmed modular style has set the industry standard for performance and is the most imitated item in today’s worm gear speed reducer market. But why settle for a knock-off when you’re able to 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 result 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 share)
Features
Literature
Video
Contact
Product Features
The 700 Series’ large oil double reduction worm gearbox reservoir provides efficient heat dissipation and lubrication for longer operating life.
Its multi-position mounting versatility allows for installation in practically 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 casing, fabricated of fine-grained, gear-quality cast iron, provides optimum strength for maximum durability, along with 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 result shaft assures capacity for high torque and overhung loads.
Pipe plugs allow easy fill, 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 can be found in our eCatalog.
DOUBLE REDUCTION GEAR
Ever-Power Double Reduction Worm Gear Units are constructed using two single reduction worm gear systems. The primary worm gear unit is specially designed to attach integrally on a typical single worm gear unit which forms the secondary stage. The entire gear unit becomes compact and rigid in set up for slow shifting machinery. A wide variety of ratio from 75:1 to 4900:1 is available. These gear units are particularly ideal for high torque slow-velocity 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 reduction Worm Gear reducers that are designed to last. Double reduction units are made with the same top quality elements as the single decrease Worm Gear reducers.