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DUB Swivel
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Quality,
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These Pullback Swivels are designed specifically for Horizontal Directional Drilling applications. The most important feature of this patented product is the sealing system. The multiple sealing stages become progressively finer so that a simple oil seal is not required to keep out sand and other coarse particles which can easily destroy such a seal. DCD starts with a gap seal that keeps out the larger particles, then they utilize a mechanical seal with lapped steel rings rotating against each other. This seal is designed for use in such applications as cement mixers or military tanks used in desert conditions. For the final stage of protection, a lip seal is used directly in front of the bearings. In
addition to the sealing system, these swivels offer a lubrication system
complete with relief valve so that the seals cannot be damaged by over greasing.
Grease need only be applied in small quantities since loss of lubricant is
almost non-existent. DUB-Swivels
use back to back Tapered Roller Bearings in the smaller sizes up to and
including 20 Ton capacity. Larger sizes utilize a Spherical Roller,
Cylindrical Roller and Tapered Roller Bearing combination. The tension load
carrying Spherical Roller Bearing does not offer adequate side load protection
and therefore the use of the Cylindrical Roller Bearing for extra support is
added. The
DUB-Swivel bearings are designed to provide a lifespan in excess of 700 hours.
This lifespan is based on proper usage of the swivel – severe side or shock
loads as well as maintenance and care will affect these expectations. Close
attention must be paid to the product information sheets that accompany each
swivel shipped. It is
our recommendation always to select a swivel larger than the machine capacity.
It is usually more cost effective when this is done and, if the product is used
carefully, lifespans in excess of 3,000 hours have been recorded. All mechanical components are designed to withstand a straight tensile load of 5 times the Safe Working Limit on the smaller swivels while swivels over 100 Ton capacity have a lesser rating depending on size. All
DUB-Swivels 20 Ton capacity and larger are built with individually assigned
serial numbers and complete material traceability for every component. All mechanical components are designed to withstand a tensile load of 5 times the Safe Working Limit. Key Benefits
For more detailed information please refer to the
Specification Sheets for each type of swivel. |
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* Note: To print on one page, it may be necessary to decrease left and right margins in page setup Send mail to sales@dcddesign.com with questions or comments about anything DCD related. We want to hear from you! |
