Double Worm Gearing
The exclusive use of the involute helicoid thread form on the worm and gear provides for high efficiencies and lengthy service lifestyle. The hardened, ground and polished alloy metal worm develops a even, work hardened surface area on the bronze gear. For this reason, the worm gears put on 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 upon 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 capability “C” Face motor flanges
Motor scoops
ouble Reduction Worm Gearbox
Ever-Power Double Decrease Worm Gearboxes are two stage worm decrease units.
A specifically designed primary worm reduction unit is integrally mounted on a standard single decrease Ever-Power worm gearbox which forms the next stage. The composite units provide the most small and rigid arrangement for large reduced amount of speed necessary for slow shifting machinery. A wide selection of ratios up to 4900:1 is available.
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 certainly are a typical collection 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 Version / Shaft Mounted Version / All sorts with motor mounting adaptor /
motor – optional
The worm shafts are made from top quality case hardening steel, accurately generated, ground and super finished. The worm tires include phosphor bronze centrifugally cast rims of significant sections welded to rigid centers. Considerable versatility of shaft layout is permissible with all sorts of Double Reduction products. The dimension drawing for every series shows the various shaft handing plans and the correct reference should 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 proven modular style has set the industry standard for overall performance and may be the most imitated product in the current worm gear rate reducer market. But why accept a knock-off when you’re able to have the initial – from Ever-Power.

Specifications
11 basic solitary 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 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’ huge oil reservoir provides efficient heat dissipation and lubrication for longer operating lifestyle.
Its multi-position mounting versatility permits installation in practically any position.
Housings are straddle-milled, top and bottom level, 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 optimum durability, along with double reduction worm gearbox 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 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 life.
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 unit is specially designed to install integrally on a typical single worm gear device which forms the secondary stage. The entire gear unit becomes small and rigid in set up for slow moving machinery. A wide selection of ratio from 75:1 to 4900:1 is available. These gear units are particularly suitable for high torque slow-velocity drives. Worm gearing conforms to BS-721.
Worm Gear Rate Reducers: Double Reduction
Double Reduction Worm Gear Speed
Reducer Product Configuration
EP, Inc. manufacturers dual reduction Worm Gear reducers that are built to last. Double reduction units are created with the same high quality components as the single reduction Worm Gear reducers.