American Brush Manufacturers Association Summary of Revisions - Proposed ANSI B165.1 R2013

SECTION B

Clause / Comment / Rationale / Revision Language
Contents:
Tables / Added new table and renumbered existing tables / Added new table for threaded arbor holes, renumbered and moved tables within evaluation document for ease of referencing. / TABLES
1Minimum spindle (shaft) diameter for brushes of various sizes (in)
1aMinimum spindle (shaft) diameter for brushes of various
sizes (mm)
2Recommended tolerances for arbor hole size (in)
2aRecommended tolerances for arbor hole size (mm)
3Minimum threaded arbor hole (major diameter) for brushes of various sizes (in)
3aMinimum threaded arbor hole (major diameter) for
brushes of various sizes (mm)
4Test factors for speed test of brushes
5Conversion table for brush speeds (Surface speed in feet per minute)
5aConversion table for brush speeds (Surface speed in M per
minute)
Explanation of Standard Format / Added new language regarding E4.3 Illustration 2 / This language allows ABMA to make changes to the ABMA Safety Slip without the need to subject the change to the Canvass process. / The information contained in E4.3 Illustration 2 is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI’s requirements for an ANS. As such, Illustration 2 may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard.
5.5 Table 1 / Table was moved / This table was only moved in the evaluation document. No language is changed
5.5 Table 1a / Table was moved / This table was only moved in the evaluation document. No language is changed
5.10 Table 2 / Table was moved / This table was only moved in the evaluation document. No language is changed
5.10 Table 2a / Table was moved and reformatted similar to other tables / This table was only moved and reformatted in the evaluation document. No language is changed
5.11 Threaded arbor hole brushes / Added “arbor” / Added the word to enhance specificity / Threaded arbor hole brushes
5.11 Threaded arbor hole brushes / Added language / Enhance clarification and added tables 3 and 3a / See Table 3 and Table 3a below for minimum threaded arbor hole diameters that shall be used for brushes of various sizes. Tables 3 and 3A list the recommended minimum threaded arbor diameter sizes with a minimum shaft yield strength of 50,000 PSI for various brushes diameters. Multiple factors including RPM, dynamic loads along with brush and equipment configuration must always be considered when mating a brush to a power tool or any custom designed equipment to drive power brushes. For any non-recommended arbor size it is critical to consult your brush and equipment designer or manufacture prior to brush application.
5.11 Threaded arbor hole brushes / Added table 3,3a / Added new tables for enhanced standardization clarity / Table 3 – Minimum threaded arbor hole (major diameter) for brushes of various sizes (in)
Maximum outside diameter of wheel brush (in) / Minimum threaded arbor hole
(major diameter)
(in)
Up to and including 4
Greater than 4 and up to and including 5
Greater than 5 and up to and including 8
Greater than 8 / 3/8
1/2
5/8
Do not use a threaded hole
Table 3a – Minimum threaded arbor hole (major diameter) for brushes of various sizes (mm)
Maximum outside diameter of wheel brush (mm) / Minimum threaded arbor hole
(major diameter)
(mm)
Up to and including 100
Greater than 100 and up to and including 125
Greater than 125 and up to and including 175
Greater than 175 / M10
M12
M14
Do not use a threaded hole
6.4 Bushing / Added new language / Added language to strengthen bushing use compliance. / . A bushing should never be used that will violate 5.5, Table 1 or 5.5, Table 1a.
7.2 Inspection / Language revision / To better explain or clarify inspection / All contact surfaces of brushes, shall be flat and free of foreign matter that could result in uneven pressure.
All surfaces of the brush that mount onto the tool should be free of foreign matter and not have burrs.
7.4 Brush Speed / Added “MSFS” / To add the common acronym for “maximum free safe speed” / Before mounting a brush, it shall be determined that the machine speed does not exceed the maximum safe free speed (MSFS) for the brush, as established by the brush manufacturer.
Under no circumstances shall a brush be mounted on a machine whose rpm exceeds the maximum safe free speed (MSFS) recommended for the brush.
8.3 Speed Test / Table moved and renumbered / Table moved for evaluation document only. No changes to table were made. Table renumbered (see Contents: Tables)
8.5.2 Speed adjustment control / Tables 5,5a moved and renumbered / Tables moved for evaluation document only. No changes to tables were made. Tables renumbered (see Contents: Tables)
8.6.1 / Table renumbered / Reference to a renumbered table / The brush manufacturer shall make certain that the brushes are of adequate strength, have been speed-tested in accordance with Table 42, and bear the brush manufacturer’s approval of the higher speed.
Explanatory Information / Not part of ANSI B165.1
E3.1.13 Crimped Wire / Revised Illustration 1 / Illustration 1 was revised to include diagram legend for amplitude, which was discovered to omitted from earlier versions in error /

E4.3 Marking / Added new language regarding E4.3 Illustration 2 / This is redundant to the language added in “Explanation of Standard Format”. This language allows ABMA to make changes to the ABMA Safety Slip without the need to subject the change to the Canvass process. Here it is added before the Illustration and again, after the illustration to meet ANSI guidelines. / The information contained in Illustration 2 above is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI’s requirements for an ANS. As such, Illustration 2 may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard.
E4.3 Illustration 2 / Revised Illustration 2 / The ABMA safety slip is redesigned to be more user friendly and is recommended to be separated from the canvass process to facilitate more timely changes as conditions warrant. / There is a revised Illustration in Ballot 2 in response to an objection. ABMA has worked with the objector to create this revision.
E5.7 Limiting brush diameter / Language revision / Language revision more clearly conveys proper sizes to be used in various applications. / In general, brush driving equipment that is stationary (fixed position) should use brushes with an outside diameter of 6 inches (152.4 millimeters) or larger. Portable tools (6000 rpm maximum) should use brushes 6 inches (152.4 millimeters) or smaller, whereas hand-held power tools and tools that rotate the brushes at speeds higher than 6000 rpm should use brushes 3 inches (76.2 millimeters) or smaller.
In general, brush driving equipment that is stationary (fixed position) should use brushes with an outside diameter of 6 inches (152.4 millimeters) or larger. Portable tools and hand held power tools are designated size specific (i.e. 4 ½” angle grinder). The user should always match the appropriate size brush with the specified size called out on the tool. The user should also use a brush with a higher Maximum Safe Free Speed (MSFS) rating than the MAX rpm specified on the tool.