Cast Link Belts

Omega Castings has, and continues to, designed special purpose links for cast-link belt furnaces. The size and pitch of these links vary with the expected end-use. Thus, two-inch, three-inch, four-inch, six-inch and, soon, five-inch pitch links are, or will be, part of the standard selection available.

4 Inch Pin Style Link

The P-448 is a four-inch pitch, three-inch-wide link and is assembled using a three-quarter-inch diameter pin. By test, this link is the strongest of our four-inch pitch group and fractures under load at room temperature at thirty-five thousand p.s.i. Mode of failure is fractures through the end bearing walls. These links are machined through the end bearing holes to remove draft and establish a true in-pitch surface for pin engagement. The links, when assembled, have a twenty-thousandths clearance with adjacent links at room temperature and a twelve-thousandths clearance at operating temperature.


The ML-448 is a four-inch pitch, three-inch-wide link but is an interlocking type; that is, the lugs at one end of the link fit into the larger hole at an adjacent link. The lug surfaces and large hole bearing surfaces are machined to remove draft and establish proper pitch. A five-eighths diameter pin is inserted through the smaller lug hole to hold the links together, side by each, and maintain the proper fit relationship with adjacent links. These links maintain twenty-thousandths clearance at ambient and twelve-thousandths clearance at operating temperature. An additional feature of this link is its tubular design.

When these links are used in atmosphere furnaces employed for neutral hardening, as well as deep case hardening, it is anticipated that the furnace will, from time to time, be subjected to a "burn-out cycle" to reduce carbon buildup. The ML-448 link has a slot in the tubular portion of the link to facilitate air circulation within the tube body, thus accomplishing the desired burn-out.

The ML-448 link has been subjected to tensile testing and fractures at twenty-nine thousand p.s.i. at ambient temperature. Failure mode is the fracture and tearing of the lugs.


The L-448 is a four-inch pitch, three-inch-wide link and is an interlocking type, also. It is a "T-section" link and preceded the ML-448 tubular link in design. The link is machined in the same manner as the tubular link, with much-the-same results. However, the link is not as capable of being properly "burned out", as there is no aperture to facilitate airflow into the lug internal area. When subjected to tensile testing, this link fails at nineteen thousand p.s.i. and failure mode is the fracture of the large hole bearing wall.

The L-448 link is slightly lighter than the ML-448 and, thus, is less expensive to produce. Best use for this style is in furnaces with less than sixty pounds load per-square-foot, that are non-atmospheric or open-flame in operation.

6 Inch Pitch Links

The P-664-L is a six-inch pitch link slightly less than four inches wide and is assembled using a three-quarter-inch diameter pin. This link is a pintel variety, in as much as each link follows the preceding link in assembly. This type of link is used in solid belt construction, as well as "carrier belt" construction. Carrier belts are made up of single rows of links held in position with washers welded to the pins to maintain separation. Various numbers of rows of links can be assembled in a given belt, depending on the desired width of the final belt. Most rows are separated with a gap of eleven inches or less and facilitate a mesh belt overlay. The carrier belts are most used in draw or tempering furnaces, whereas the solid construction belts are used for hardening applications.

P-664-H
The P-664-H is a six-inch pitch link, four inches wide and assembled with one-inch diameter pins. It is also a pintel variety and is used in solid belt assemblies. Its principle use is in hardening or annealing furnaces that process heavy forgings or castings.

3 Inch Pitch Links

The P-324 is a three-inch pitch, one-and-one-half-inch-wide link and is assembled with other like links using one-half-inch diameter pins. These links are used in furnaces with lighter load applications and, in many cases, for specific parts that require manual or robotic loading and unloading. This type of link was first used in the earliest cast-link belt furnaces (circa 1930's) and is still used in a number of smaller furnaces today. Various special-shaped three-inch pitch links have been designed for special purpose, all are used in solid belt construction.

 

5 Inch Pitch Links

P-564
The P-564 is a five-inch pitch link, four inches wide and assembled with 5/8th inch diameter pins. It is also a lug style and is used in solid belt assemblies. Our latest design, which takes advantage of our 40 years of experience, is designed to be fully compatible with all manufacturers' five inch pitch drive drums. Its principle use is in hardening or annealing furnaces that process heavy forgings or castings.

Custom Links

Are you an OEM with a custom application or an end user with a problem that needs a solution?  We can help. Omega Castings, Inc. has a history of helping our customers engineer custom conveyor systems that fit their purpose and budget.

Contact Us today with your heat resistant, high temperature, alloy cast link belt needs. We have the staff to help you select the correct standard parts, or to engineer and then fully cast the high quality alloy parts for your specific application.






Omega Castings, Inc.
301 Fritz Keiper Blvd.
Battle Creek, MI 49037
Phone: 269-968-8105
Fax: 269-968-1661
Email:

 

 

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