Product News: Fasteners & Hardware

Spherical Washers optimize bolt mounting of machinery.

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Press Release Summary:

August 7, 2014 - Promoting optimal performance in industrial, marine, and other heavy-duty bolted joint applications, Type SW standard height (2.36 in.) and Type SWLP low profile (0.79–1.34 in.) SKF Spherical Washers reduce likelihood of bolt relaxation by distributing bolt tension evenly. These all-spherical, 2-piece washers automatically adjust under compression to compensate for up to 4° of angular deviations. Construction is of high-grade alloy steel with corrosion protection surface treatment.

SKF USA, Inc.

890 Forty Foot Rd., P.O. Box 352, Lansdale, PA, 19446, USA

Original Press Release

SKF Spherical Washers Optimize Bolt Mounting of Machinery and other Critical Bolted-joint Applications by Integrating Unique Design Features for Ideal Performance

Press release date: August 4, 2014

SKF Spherical Washers optimize bolt mounting of machinery and bolted equipment by integrating unique design features promoting ideal performance in industrial, marine, and all other heavy-duty bolted joint applications.  The all-spherical two-piece washer automatically adjusts under compression to compensate for up to four degrees of angular deviations. This creates an exact parallel plane between the inner face of the bolt head and inner face of the nut to distribute the load evenly over the entire inner contact surface areas.  Any need for on–site machining (spot facing) to achieve parallelism is eliminated.

SKF Spherical Washers ultimately serve to reduce the likelihood of bolt relaxation by distributing bolt tension evenly, retaining proper bolt tension by preventing bolt bending, and keeping bolts straight as intended.  The extended length of the spherical washer allows for the use of longer bolts, resulting in additional bolt clamping length and elongation in the bolt.

These two-part spherical washers incorporate a larger ring with a concave surface, which connects to its corresponding smaller convex piece to achieve application benefits, such as an enlarged contact area with a reduced surface contact pressure.  All washers are manufactured from high-grade alloy steel and feature a special surface treatment to enhance corrosion protection in humid, salty, and other corrosive or harsh environmental conditions.

Versions available for quick turnaround and delivery include Type SW standard height (60mm or 2.36 in.), which users can easily machine down for lower washer heights as necessary, and Type SWLP low profile (20mm to 34mm or 0.79 in. to 1.34 in.).  In addition to the stocked product line, custom spherical washers can be ordered (including the opportunity to specify alternative materials).

Contact
Garry Stewart
SKF USA Inc.
3443 North Sam Houston Parkway
West Building 4, Suite, 100
Houston, TX 77086 
Tel: 281-925-2847
Email: Garry.W.Stewart@skf.com / vibracon-usa@skf.com 
Web link: www.skfusa.com

SKF is a leading global supplier of bearings, seals, mechatronics, lubrication systems, and services which include technical support, maintenance and reliability services, engineering consulting and training. SKF is represented in more than 130 countries and has around 15,000 distributor locations worldwide. Annual sales in 2013 were SEK 63,597 million and the number of employees was 48,401. www.skf.com

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