Gunnebo Johnson Corporation furnishes ForgeFab™ sheaves both as popular products in their own right and as the original equipment most preferred by major O.E.M. accounts.
ForgeFab™ customers are made up of Original Equipment Manufacturers, leading distributors, and our own Gunnebo Johnson Corporation. Through them, the product finds its way into all types of equipment from mobile cranes to overhead cranes...all types of applications from lifting drill pipe to opening dam gates...all types of industries from mining to marine, logging to construction.
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| 3 through 72-inch sheave diameters. |
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| 1/4 through 3 inch wire rope sizes*. |
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| 4 to 1 design factor**. |
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| Plain bore (no bearings, bronze bushing, roller bearing without inner race, roller bearing with inner race, and tapered roller bearing types. |
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| Cast iron, ductile iron, cast steel and ForgeFab™ roll-forged steel plate material types. |
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| 3/4 through 5-inch hub widths.(Standard; Larger sizes upon request) |
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| Flame hardened grooves to minimum Rockwell "C" 35 on all sheaves 16 inches and larger. | ||||||||
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| Custom designs to 108 inches O.D. available. | ||
| Flame hardened grooves on sheaves with less than 16-inch Outside Diameter. | ||
| Corrosion-resistant coatings available. | ||
| Hub-located grease fittings. | ||
| Modifications as required to API and other applicable industry standards. | ||
| Special shafts furnished for any sheave listed. |
Sheaves by the ForgeFab™ Division fall into two major categories.First is our wide range of conventional sheaves. These are formed by casting grooves, which are machined to correct rope size. The materials from which they are made are ductile iron and cast steel.
Second is the revolutionary ForgeFab™ - a superior strength line of wire rope sheaves which can be supplied without long delays - and at savings from 15 to 50 percent over traditional cast versions.
ForgeFab™ grew out of a need for
readily available sheaves at a reasonable cost.
Faced with increasing environmental restrictions, continuing material shortages and growing customer concern, we set out to find a better way. We started by developing our own specialized equipment. We ended up with an entirely new patented process. One which did its job without castings and die forgings, and did it in far less time.
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 Each ForgeFab™ sheave begins as a computer driven, precision disc cut from proprietary chemistry alloy steel plate. |
 The steel disc is heated to forging temperature and its edge rotated against a system of staged rollers to forge the sheave rim and wire rope groove. |
 A precisely machined hub is arc welded to the forged disc. A variety of welding techniques is used, including: fillet, submerged arc, partial penetration and full penetration, depending upon application. |
 The result - a precision built ForgeFab™ sheave whose integral web/rim design is much stronger. |
| Rim Dimensional Chart Rim width is determined by Wire Rope Size and Web Thickness. |
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Wire | Web | Rim | Groove | |||
| Rope Size | Thickness | Width | Depth | ||||
| H | B | C | D | ||||
| Light | Heavy | Light | Heavy | Light | Heavy | ||
| Weight | Weight | Weight | Weight | Weight | Weight | ||
| 3/8" | 3/8" | 1/2" | 15/16" | 11/16" | 9/16" | 9/16" | |
| 7/16" | 3/8" | 1/2" | 1" | 13/16" | 11/16" | 11/16" | |
| 1/2" | 3/8" | 1/2" | 1-1/8" | 1-1/4" | 3/4" | 3/4" | |
| 9/16" | 1/2" | 3/4" | 1-1/4" | 1-5/8" | 7/8" | 7/8" | |
| 5/8" | 1/2" | 3/4" | 1-7/16" | 1-3/4" | 15/16" | 15/16" | |
| 3/4" | 1/2" | 3/4" | 1-1/2" | 1-3/4" | 1" | 1-1/8" | |
| 7/8" | 3/4" | 3/4" | 2" | 2" | 1-5/16" | 1-5/16" | |
| 1" | 3/4" | 3/4" | 2-1/4" | 2-1/4" | 1-1/2" | 1-1/2" | |
| 1-1/8" | 3/4" | 1" | 2-1/4" | 2-1/2" | 1-5/8" | 1-11/16" | |
| 1-1/4" | 1" | 1-1/4" | 2-1/2" | 2-3/4" | 1-3/4" | 1-7/8" | |
| 1-3/8" | 1-1/4" | 1-1/2" | 3" | 3-1/4" | 1-15/16" | 2-1/16" | |
| 1-1/2" | 1-1/4" | 1-1/2" | 3-1/4" | 3-1/2" | 2-1/8" | 2-1/4" | |
| Hub Types Available | |||
 Standard |
 Offset |
 Grooved |
 Counter Bored |
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| Lubrication Types Available | |
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| Hub Zerk | Center Pin Zerk |