DELEVAN www.delevan.com A REGAL REXNORD BRAND

Delevan – the Choice for Magnetics, Resolvers & Precision Balls Often the ideal design solution is not about finding the fastest, sturdiest, most accurate or even the least expensive option. Rather, the ideal solution is the optimal balance of performance, life and cost. The Leading Supplier of Precision Balls Delevan has several advantages that makes us the supplier of choice for precision balls. • Delevan owns the broadest standard product offering of precision balls in the industry. • Modified versions of standard product or white sheet design solutions are routine for us. • Choose Delevan...

Precision Balls Table of Contents Introduction, Material Characteristics, How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ball Hardness Correction Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ABMA Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

DELEVAN Overview Expect only the finest in quality ball technology from Delevan. Delevan offers ball sphericity within three millionths of an inch (0.077 micron), 100% quality inspection, and a choice of 15 high performance materials—all guaranteed to meet or exceed the standards of the American Bearing Manufacturers Association (ANSI/ABMA Std. 10A-2001). The specifications for each Delevan quality ball are presented in this guide. Material characteristics are explained below. Each material's compositional analysis, mechanical properties and various testing standards are described with the ball...

Precision Balls Hardness Correction

ABMA Definitions Grades and Tolerances (ABMA STD-10) (2.12) Grade: A specific combination of dimensional form and surface roughness tolerance. A ball grade is designated by a grade number. (2.4) Ball Diameter Variation: The difference between the largest and the smallest actual single diameter of one ball. (2.8) Lot Diameter Variation: The difference between the mean diameter of the largest ball and that of the smallest ball in the lot. (2.9) Nominal Ball Diameter Tolerance: The maximum allowable deviation of any ball lot mean diameter from the nominal ball diameter. Mechanical Characteristics...

Precision Balls Allowable Ball Gage Variation ±.00003 ±.00005 ±.00005 ±.00010 – – – – Nominal Ball Diameter Tolerance – – – – ±.000200 ±.000500 ±.001000 ±.005000 Nominal Ball Diameter Tolerance – – – – ±.0051 ±.0381 ±.0250 ±.1270 † Maximum surface roughness arithmetic average. Grades and Tolerances – Metric (Millimeter) DIN Grade – – I II III IV – V Allowable Ball Gage Variation ±.0008 ±.0013 ±.0013 ±.0025 – – – – † Maximum surface roughness arithmetic average. Fresh Water Salt Water Food Products Citric Acid Ammonia Liquids 52100 CHROME 440C STAINLESS 302 STAINLESS 316 STAINLESS BRASS CERAMIC...

52100 Chrome Steel Balls Material Characteristics These properties are found primarily in ball bearing designs and a variety of demanding industrial applications. A vacuum-degassed AISI E52100 chrome steel is used to obtain a superior ball with a fine surface finish, through-hardness and high load capacity. Also available in consumable electrode vacuum melt material. Hardness Our modern heat treating facilities, complete with controlled atmosphere and temperature, allow us to maintain Rockwell hardness within three (3) points in any production run and to attain any specific hardness designated...

Precision Balls 440C Stainless Steel Balls Material Characteristics Three quality stainless steels are available for applications in corrosive environments. AISI Type 440C offers the greatest hardness and surface finish, and is available in double vacuum melted materials. AISI Type 302 provides extreme toughness and corrosion resistance from oxidizing solutions and many organic chemicals in an unhardened state. Hardness Our modern heat treating facilities, complete with controlled atmosphere and temperature, allow us to maintain Rockwell hardness within three (3) points in any production run...

DELEVAN 302, 302HQ, 316, 316L Stainless Steel Balls For resistance to sulfuric acid compounds and other severely corrosive environments, Type 316 austenitic steel with increased nickel is available. If required, Delevan can also provide a quality ball in Types 410, 420, and 430 stainless steels. Non-annealed hardness, uniform throughout, as measured on parallel flats, is typically Rockwell "C" 25 to 39T. Annealed hardness, available on request, is typically Rockwell "B" 75 to 90. (A table converting Rockwell "C" to Rockwell "B" and Brinell ratings may be found on page 6.) TPer ABMA Std 10, Table...

Precision Balls Ceramic Balls For extremely high temperature environments or applications exposed to harsh chemicals, balls made of engineered ceramics offer excellent performance characteristics. Delevan offers a variety of precision ceramic balls, each providing its own unique corrosion and heat resistant qualities. Silicon Nitride A popular choice among bearing designs and other high precision product applications. When compared to steel, this material offers a 60% reduction in weight, up to twice the material hardness, a coefficient of thermal expansion that is 70% less than steel, and a...

Material Characteristics This highly inert material is lightweight, offers exceptional anti-corrosive properties, operates effectively in high temperature applications, provides a high level of tension/compression strength, and has expansion characteristics similar to steel. Titanium is used extensively in aerospace applications as well as in the chemical, food processing, and medical implant industries. Precision 440A Stainless Steel Hollow Balls The one-inch hollow ball is utilized in weight sensitive applications requiring a combination of high surface hardness with material fracture toughness....