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 soft, work hardened surface area on the bronze equipment. For this reason, the worm gears wear in and improve with extented 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 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 capability “C” Face motor flanges
Motor scoops
ouble Reduction Worm Gearbox
Ever-Power Double Reduction Worm Gearboxes are two stage worm reduction units.
A double reduction worm gearbox specially designed primary worm reduction unit is integrally mounted on a standard single reduction Ever-Power worm gearbox which forms the second stage. The composite products provide the most compact and rigid arrangement for large reduced amount of speed necessary for sluggish moving machinery. A wide range of ratios up to 4900:1 is offered.
Double Reduction Worm Gear Container 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 overall range of Ever-Power Double Reduction Worm Gear Box. Information on other ratios 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 top quality case hardening steel, accurately generated, ground and super finished. The worm tires comprise of phosphor bronze centrifugally cast rims of considerable sections welded to rigid centers. Considerable flexibility of shaft layout can be permissible with all types of Double Reduction devices. The dimension drawing for every series shows the different shaft handing arrangements and the appropriate reference should be quoted when purchasing.
Our regular 700 Series – the heart of Ever-Power swiftness 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 item in the current worm gear speed reducer marketplace. But why settle for a knock-off when you’re able to have the original – from Ever-Power.

Specifications
11 basic one 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’ huge oil reservoir provides efficient heat dissipation and lubrication for longer operating lifestyle.
Its multi-position mounting flexibility permits installation in virtually 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 optimum 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 improve 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 up, 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 Devices are constructed using two solitary reduction worm gear systems. The principal worm gear unit is specially made to mount integrally on a typical single worm gear unit which forms the secondary stage. The entire gear unit becomes small and rigid in arrangement 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-acceleration 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 reduction Worm Gear reducers that are built to last. Double reduction units are created with the same high quality parts as the single decrease Worm Gear reducers.