Double Worm Gearing
The exclusive usage of the involute helicoid thread form on the worm and gear offers high efficiencies and lengthy service lifestyle. The hardened, surface and polished alloy steel worm develops a soft, work hardened surface area on the bronze equipment. Because of this, the worm gears use in and double reduction worm gearbox improve with extented service while other gears are deteriorating.
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 capability “C” Face motor flanges
Motor scoops
ouble Reduction Worm Gearbox
Ever-Power Double Reduction Worm Gearboxes are two stage worm decrease units.
A specifically designed primary worm decrease unit is integrally mounted upon a standard single decrease Ever-Power worm gearbox which forms the next stage. The composite devices provide the most compact and rigid arrangement for large reduced amount of speed necessary for slow moving machinery. A wide range of ratios up to 4900:1 is obtainable.
Double Decrease 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 used 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 types with motor installation adaptor /
motor – optional
The worm shafts are constructed with 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 devices. The dimension drawing for each series shows the different shaft handing plans and the correct reference should be quoted when ordering.
Our standard 700 Series – the heart of Ever-Power speed reducer product line – has been serving industry reliably for over 40 years. Its proven modular style has set the sector standard for functionality and is the most imitated item in the current worm gear quickness 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 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 result 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 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, 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 output 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 life.
Both 2D and 3D CAD drawings can be found in our eCatalog.
DOUBLE REDUCTION GEAR
Ever-Power Double Decrease Worm Gear Systems are constructed using two solitary reduction worm gear systems. The principal worm gear device is specially designed 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 selection of ratio from 75:1 to 4900:1 is available. These gear units are particularly suitable for high torque slow-speed drives. Worm gearing conforms to BS-721.
Worm Gear Velocity Reducers: Double Reduction
Double Reduction Worm Gear Speed
Reducer Product Configuration
EP, Inc. manufacturers double reduction Worm Gear reducers that are designed to last. Double decrease units are made with the same top quality elements as the single reduction Worm Gear reducers.