Grizzly Model G0550 - Manual (Page 24)

-22- G0550/G0551 15" Planer
The species of wood, as well as its condition,
have a dramatic effect on planing ability. The
harder the wood (as illustrated by its shear
strength), the more difficult it will be to plane. A
brief listing of common hard and soft woods in
relation to their shear strengths and planing diffi-
culty is listed below.
Type Shear (PSI)
Black Locust 2,480
Sugar Maple 2,330
Pecan Hickory 2,080
White Oak 2,000
White Ash 1,950
Black Cherry 1,700
American Elm 1,510
Black Walnut 1,370
Red Alder 1,080
Basswood 980
Cottonwood 930
Increasing
Difficulty
Type Shear (PSI)
Western Larch 1,410
Tamarack 1,280
Douglas Fir 1,160
Alaska Cedar 1,130
Sitka Spruce 1,150
Sugar Pine 1,050
Cypress 1,000
Redwood (OG) 940
Red Cedar 860
White Pine 850
Balsam Fir 710
Increasing
Difficulty
Figure 18. Anti-kickback fingers.
The anti-kickback fingers hang from a rod sus-
pended across the front of the cutterhead casting.
Check the fingers to ensure that they swing freely
and easily. See
Figure 18.
DO NOT apply oil or other lubricants to the
anti-kickback fingers. Oil or grease will
attract dust and restrict movement of the
fingers, which could result in damage to
your workpiece, the planer, or possibly
serious injury to the operator.
Anti-kickback Fingers
Wood Species Anti-Kickback