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Rim Speed - Feet per Minute
Saw Gauge Equivalent Chart
Decimal Equivalents
Useful Formulas
More Useful Formulas
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Rim Speed
- Feet per Minute |
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|
Diam. of Saw (inches) |
8,000 |
9,000 |
10,000 |
12,000 |
14,000 |
|
12" |
2,546 |
2,864 |
3,183 |
3,819 |
4,456 |
|
14" |
2,182 |
2,455 |
2,728 |
3,274 |
3,819 |
|
16" |
1,909 |
2,148 |
2,387 |
2,864 |
3,342 |
|
18" |
1,697 |
1,909 |
2,122 |
2,546 |
2,970 |
|
20" |
1,527 |
1,718 |
1,910 |
2,292 |
2,674 |
|
22" |
1,388 |
1,562 |
1,736 |
2,083 |
2,430 |
|
24" |
1,273 |
1,432 |
1,592 |
1,910 |
2,228 |
|
26" |
1,175 |
1,322 |
1,469 |
1,763 |
2,056 |
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28" |
1,091 |
1,227 |
1,364 |
1,637 |
1,910 |
|
30" |
1,018 |
1,146 |
1,273 |
1,528 |
1,782 |
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32" |
954 |
1,074 |
1,193 |
1,432 |
1,671 |
|
34" |
898 |
1,011 |
1,123 |
1,348 |
1,572 |
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36" |
848 |
954 |
1,061 |
1,273 |
1,485 |
|
38" |
804 |
904 |
1,005 |
1,206 |
1,407 |
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40" |
763 |
859 |
915 |
1,146 |
1,337 |
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42" |
728 |
818 |
910 |
1,091 |
1,273 |
|
44" |
694 |
781 |
868 |
1,041 |
1,215 |
|
46" |
664 |
747 |
830 |
996 |
1,162 |
|
48" |
636 |
716 |
796 |
955 |
1,114 |
|
50" |
611 |
687 |
764 |
916 |
1,069 |
|
52" |
587 |
661 |
734 |
881 |
1,028 |
|
54" |
566 |
637 |
707 |
849 |
990 |
|
56" |
546 |
614 |
682 |
818 |
955 |
|
58" |
526 |
593 |
658 |
790 |
922 |
|
60" |
509 |
573 |
636 |
764 |
891 |
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62" |
493 |
554 |
616 |
740 |
862 |
|
64" |
477 |
537 |
597 |
716 |
836 |
|
66" |
462 |
521 |
579 |
694 |
810 |
|
68" |
449 |
505 |
562 |
674 |
786 |
|
70" |
436 |
491 |
546 |
655 |
764 |
|
72" |
424 |
477 |
530 |
636 |
742 |
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74" |
413 |
464 |
516 |
619 |
722 |
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76" |
402 |
452 |
502 |
603 |
704 |
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78" |
392 |
440 |
490 |
587 |
685 |
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80" |
382 |
429 |
477 |
573 |
668 |
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82" |
373 |
419 |
465 |
559 |
652 |
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84" |
364 |
409 |
455 |
546 |
636 |
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96" |
318 |
358 |
398 |
477 |
557 |
|
108" |
283 |
318 |
354 |
424 |
495 |
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Saw Gauge Equivalent Chart |
|
Gauge |
Thousandths |
Fraction |
|
4 |
0.238 |
15/64" |
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5 |
0.220 |
7/32" |
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6 |
0.203 |
13/64" |
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7 |
0.180 |
3/16" scant |
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8 |
0.165 |
5/32" full |
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9 |
0.148 |
5/32" scant |
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10 |
0.134 |
1/8" full |
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11 |
0.120 |
1/8" scant |
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12 |
0.109 |
7/64" |
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13 |
0.095 |
3/32" |
|
14 |
0.083 |
5/64" full |
|
15 |
0.072 |
5/64" scant |
|
16 |
0.065 |
1/16" full |
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17 |
0.058 |
1/16" scant |
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18 |
0.049 |
3/64" |
|
19 |
0.042 |
- |
|
20 |
0.035 |
- |
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|
Decimal Equivalents |
|
Frac. |
Dec. |
Gauge |
|
1 |
1.0000 |
|
|
31/32 |
0.9687 |
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15/16 |
0.9375 |
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29/32 |
0.9062 |
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7/8 |
0.8750 |
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27/32 |
0.8437 |
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13/16 |
0.8125 |
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25/32 |
0.7812 |
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3/4" |
0.7500 |
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23/32 |
0.7187 |
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11/16 |
0.6875 |
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21/32 |
0.6562 |
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5/8 |
0.6250 |
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19/32 |
0.5937 |
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9/16 |
0.5625 |
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17/32 |
0.5312 |
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1/2" |
0.5000 |
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15/32 |
0.4687 |
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7/16 |
0.4375 |
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13/32 |
0.4062 |
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0.3800 |
00 |
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3/8 |
0.3750 |
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11/32 |
0.3437 |
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0.3400 |
0 |
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5/16 |
0.3125 |
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0.3000 |
1 |
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0.2840 |
2 |
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9/32 |
0.2812 |
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0.2590 |
3 |
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1/4" |
0.2500 |
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0.2380 |
4 |
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0.2000 |
5 |
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7/32 |
0.2187 |
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0.2030 |
6 |
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3/16 |
0.1875 |
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0.1800 |
7 |
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0.1650 |
8 |
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5/32 |
0.1562 |
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0.1480 |
9 |
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0.1340 |
10 |
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1/8 |
0.1250 |
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0.1200 |
11 |
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0.1090 |
12 |
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0.0950 |
13 |
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3/32 |
0.0937 |
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0.0830 |
14 |
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0.0720 |
15 |
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0.0650 |
16 |
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1/16 |
0.0625 |
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0.0580 |
17 |
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0.0490 |
18 |
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0.0420 |
19 |
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0.0350 |
20 |
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0.0320 |
21 |
|
1/32 |
0.0312 |
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|
0.0280 |
22 |
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Useful Formulas |
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Rim Speed (feet minute) = |
|
R P.M x Saw Diameter inches |
| |
|
3.8197 |
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Chip Load per Tooth (in.) = |
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Feed Rate (FPM.) x 12 |
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R.P.M. x Teeth |
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Number of Teeth = |
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Feed Rate R.P.M x 12 |
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Chip Load x R.P.M. |
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Feed Rate = |
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Feed Roll Dia. x 11 (3.1417) x Feed Roll R.P.M. |
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Chip Load x R.P.M. |
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Circumference = |
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3.1417 x Diameter |
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Diameter = |
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Circumference |
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3.1417 |
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Required Gullet Capacity = |
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(Tooth Bite x Depth of Cut) x 2.5 |
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Driven Pulley RPM = |
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Driver Pulley 0 x R.P.M.-Driver |
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Driven Pulley 0 |
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Driver Pulley RPM = |
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Driven Pulley 0 x Driven Pulley R.P.M. |
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Driver Pulley 0 |
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Horsepower per Saw = |
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Depth of Cut x Kerf x F.P.M. x Factor. |
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|
144 |
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Factor: A = 35 (soft wood)
B = 40 (southern pine)
C = 45 (hardwood) |
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Tooth Bite Parameters = |
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Gang Edger Saws (Carbide or Stellite): .030-.045
Board Edger Saws (Carbide): .030-.050
(Stellite): .030-.060 |
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More Useful Formulas |
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π / Pii / Pie / Pye / Peye = |
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3.142 |
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Speed in Surface Feet / Minute = |
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Revolutions Per Minute x Tooth Load (Inches) x Number
of Teeth |
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Tooth Load ( Inches ) = |
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Feed Rate ( Inches ) Divided by Revolutions Per Minute)
x Tooth Load (Inches) |
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Number of Teeth = |
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Feed Rate (Inches / Minute / Revolutions Per Minute ) x
Tooth Load
( Inches ) |
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Inches to Millimeters = |
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Multiply Inches by 25.4 |
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Millimeters to Inches= |
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Divide Millimeters by 25.4 |
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1 Kilometer = |
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0.621 Mile |
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1 Mile = |
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1.60 Kilometers |
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1 Kilogram = |
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2.204 Pounds |
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Pounds Weight to Kilograms = |
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Pounds Divided by 2.2 |
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Kilograms to Pound Weight = |
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Kilograms x by 2.2 |
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1 Ounce = |
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28.3 Grams |
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1 Gallon = |
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0.1604 Cubic Feet |
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Normal Atmospheric Pressure = |
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14.7 Pounds / Square Inch or 1013 Millibars |
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1 Knot = |
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6080 Feet / Hour |
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Quick Fix Calculation for Revolutions Per Minute = |
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4 x Feet / Minute divided by the Diameter
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Area of a Circle = |
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3.142 x (Radius x Radius) |
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Volume Of a Cylinder = |
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Area of Circle x Length of Cylinder |
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Volume Of a Rectangle = |
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Length x Width x Thickness |
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"Our reputation has always been based on honesty and integrity.
Hard work has been the cornerstone to our service."
- Paul Morette, President |
The Sharp Tool Co., Inc. , 7 Bonazzoli Ave. , Hudson, MA 01749
800-221-5452 / Local: 978-568-9292 / Fax: 978-568-9497 / E-mail: sharp@sharptool.com
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