The power connection link-up . The various components of the driveline are linked by universal joints (U-joints) that allow operation through different, or changing, angles. The application determines how many U-joints are required. Automotive drivelines have as few as two, while heavy truck powertrains require as many as seven or more.
When U-joints fail, the link between the driveline and the expensive drive components is gone. The driveline depends on the strength and durability of the universal joints.
All U-joints are not created equal . The difference starts in SKF's engineering department and continues through the manufacturing process. SKF U-joints are made from high strength steel and heat-treated for maximum operating life.
Grease passageways are drilled through each trunnion, and pressed into the ends of the trunnions in a "sunburst" pattern. This assures an even flow of lubricant to the needle bearings.
Lack of lubrication is the leading cause of U-joint failure . To further prevent possible damage, especially during dry start-ups, some SKF heavy-duty U-joints also include anti-drainback valves. This assures that lubricant is always in each bearing cup even when the U-joint is at rest.
An extra built-in feature is a high quality rubber seal that ensures that the lubricant stays in and contaminants stay out.
The market link-up . SKF offers universal joints to fit heavy-duty trucks, light trucks, passenger cars, farm equipment and power take-off assemblies. Off-highway applications such as scraper tractors, wheel loaders, cranes, log skidders, crawler tractors and forklifts are also included.
An extensive line of driveline replacement parts available . SKF covers agricultural and truck mounted power take-off applications. Component part kits (including U-bolts and clamps) and telescoping PTO driveshafts are available.
SKF offers other components designed specifically for PTO applications: end yokes, quick disconnect yokes, slip yokes, weld yokes, slip sleeves, set screws, tubing and other replacement parts needed to rebuild or repair PTO drivelines.
Link-up with SKF support . A full range of catalogs, training materials, and technical support is just a phone call away.
Extra strength and durability built-in.
The SKF Difference:
1. High Strength Steel crosses
2. High Quality Seals
3. Machined to Meet or Exceed OE Standards
4. Drilled and Tapped Grease Fittings
5. Superior Lubricating
1. High Strength Steel crosses -- Made from high strength steel and produced on state-of-the-art impacter equipment. These parts are heat-treated to provide maximum strength and increase operating life.
2. High Quality Seals -- Long-wearing abrasion resistant Nitrile seals retain lubricant in the bearing and keep contaminants out. Metal protective shields are used on many truck applications for extended seal life.
3. Machined to Meet or Exceed OE Standards -- All parts are ground to stringent tolerances with quality assurance inspections at every step of the manufacturing process.
4. Grease Fitting Holes Drilled and Tapped -- In addition to standard grease fittings, SKF offers flush fittings. These fittings are normally located in the cross. For specialized applications, the fitting is located in the end of the bearing cup for easy access.
5. Superior Lubricating Properties -- Large grease reservoirs