22
Janka
Hardness Chart
The chart below shows the test results of some of the most common woods species. The
Janka
hardness test
measures the resistance of the wood species to denting and wear. The test results shown below were done in
accordance with
“ASTM D 1037-12” testing methods. Use this chart and the Variable Cycle Speed indicator (by
control knob) as a guide to set initial cycle speed for your application(s).
NOTE: Fine tuning the cycle speed may be required for your specific conditions.
The variable cycle speed control located on the side of the machine generally should be matched to the
material hardness being cut for optimum performance.
Turn the knob
counterclockwise
to
reduce
cycle
speed, and
clockwise
to
increase
speed. Use slower speeds when cutting deep pockets in thick material or
harder materials. Faster speeds can be used for cutting shallow pockets or soft materials. Slower cycle speeds
will generally produce more accurate pockets and a better finish result.
NOTE:
MDF & Particle Board typically apply to
the “Oak” setting and Plywood the “Birch” setting.
NOTE: Fine tuning the cycle speed may be required for your specific conditions.
Table II:
Janka
Hardness Chart
1820
1630
1470
1450
1360
1320
1290
1260
1155
1120
1010
995
950
950
910
900
870
720
700
660
590
500
420
380
0
200 400 600 800 1000 1200 1400 1600 1800 2000
Hickory, Pecan, Satinwood
Weng, Red Pine, Hornbeam
Sweet Birch
Hard Maple, Sugar Maple
White Oak
White Ash
Red Oak
Yellow Birch, Iroko
Teak
English Oak
Black Walnut, N. American Walnut
Cherry
Black Cherry, Imbuia
Red Maple
Paper Birch
Eastern Red Cedar
Southern Yellow Pine
Box Elder
Silver Maple
Douglas Fir
Red Alder
Hemlock
Western White Pine
Eastern White Pine
Hardness (lbf)
Hardness (lbf)
