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ABRASIVE SAFETY

At Rex-Cut Abrasives, safety is a priority. Our products are manufactured under strict guidelines and we only produce high quality,
safe products. The safety information below should be used only as a guide for the Rex-Cut Abrasives range of products. Safety
continues with the operator, please read and share the information below.

SAFTEY INFORMATION STORAGE
This safety information should be used only as a guide Rex-Cut Abrasive wheels should be stacked flat, not on their edges. Store in
for the Rex-Cut Abrasives range of products. a dry area.

1. Check all wheels for cracks or other damage RPM / SFPM SPEED CONVERSIONS
before mounting. Definitions:
2. Check machine speeds against maximum SFPM = Surface Speed in Feet per Minute
operating speed of the wheel. RPM = Revolutions per Minute
3. Be sure that the wheel bore, threaded or M/S = Meters per second
unthreaded, fits machine arbor properly and that
flanges are clean, flat, and of the proper type for The SFPM for most T27 bonded grinding wheels is
the wheel you are mounting. approximately 15,600. Note that this is equal to the
4. Run the wheel in a protected area at least one European standard of 80 M/S or 13,300 RPM for
minute before grinding. a 4-1/2” diameter wheel.
5. Wheels must be properly guarded.
6. Wear protective safety glasses or a proper face shield. Calculations:
7. Do not use wheels which have been dropped or - to convert RPM to SFPM.....SFPM = (RPM x DIA) / 3.82
otherwise damaged. - to convert SFPM to RPM.....RPM = (SFPM x 3.82) / DIA
8. Do not use excessive pressure when mounting - to convert M/S to SFPM...... M/S x 197
wheels between flang es. - to convert SFPM to M/S...... SFPM x .005
Tighten nut sufficiently to hold wheel firmly.
9. Do not use heavy side grinding pressure on any For more information regarding Safe Operating Speeds, refer to ANSI B.7.1
Type 1 straight sided wheel. Table 23 - “Standard maximum speeds in surface feet per minute” and
10. Do not mount more than one wheel on a single arbor. Table 35 - “Conversion Table - Wheel speeds”

GENERAL TECHNICAL DATA - METALS

ALUMINUM GRADES STAINLESS STEEL GRADES STANDARD MILL
FINISHES
NON-HEAT TREATABLE ALLOYS GRADE DESCRIPTION
GRADE DESCRIPTION 304 Low carbon NO. DESCRIPTION
304L Extra low carbon
1100 The purest aluminum alloy excellent for forming A semi-coarse
309/309S High temperature strength and scale resistance
3003 This alloy is similar to 1100 with higher strength No. 3 unidirectional
310/310S Similar to 309 with higher alloy content uniform finish
5005 Anodizing quality with excellent corrosion resistance 316 Best corrosion resistance A finer ground
5052 Good forming, welding, and corrosion resistance 316L Extra low carbon variation of 316 No. 4 unidirectional finish
5086 High strength superior atmospheric corrosion resistance 321 Stabilized with titanium for welds subject to commonly referred
to as a satin finish
severe corrosion
5456 Highest strength alloy of the non-treatable grades Low cost general purpose stainless. Used where
410/410S A non-directional
corrosive environment isn’t severe No. 6
HEAT TREATABLE ALLOYS 430 A non-hardening straight chromium grade semi-polished finish
GRADE DESCRIPTION A buffed finish
High strength alloy with fair workability and RMS AND RA FINISHES No. 7 having a high
2024 degree of
machining qualities COTTON FIBER ABRASIVE reflectiveness
ALCLAD The high strength of 2024 with excellent corrosion STANDARD RMS RA SPEC. REQUIRED TO A blemish free
SHEET FINISHES
2024 resistance. ACHIEVE THIS FINISH finish with a high
Good strength and workability. The best alloy for No. 3 30-45 25-40 A54GFX No. 8 degree of clarity, a
6061
anodizing. No. 4 18-30 15-25 A80GFX true mirror finish
Very high strength and hardness. Good machining
7075 No. 6 14-20 12-18 A120 - A180GFX
characteristics
No. 7 5-9 4-8 A320GFX
ALCLAD The high strength of 7075 with good corrosion
7075 resistance No. 8 1-5 0-4
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