Grizzly Gear-Head G9036 - Manual (Page 38)

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Model g9036 Mfg. 7/08+
feed rates
Feed rate is the speed the tooling travels during
operation. When the power feed is used, the feed
rate is controlled by the feed speed levers and
knobs.
the correct feed speed is determined by the
workpiece material, the type of tooling used, and
the desired finish. the chart in
figure 54 shows
the recommended feed rates for turning most
metals.
Recommended Feed Rates
Work Material
Magnesium
Aluminum
Brass & Bronze
Copper
Cast Iron (Soft)
Cast Iron (Hard)
Mild Steel
Cast Steel
Tool Steel
Alloy Steels (Hard)
Stainless Steel
Titanium
Hi Maganese Steel
Tool Feed Rate (IPR)
Rough Cuts Finish Cuts
0.015–0.025
0.015–0.025
0.015–0.025
0.010–0.020
0.015–0.025
0.010–0.020
0.010–0.020
0.010–0.020
0.010–0.020
0.010–0.020
0.010–0.020
0.010–0.020
0.010–0.020 0.005–0.010
0.005–0.010
0.003–0.010
0.004–0.008
0.005–0.010
0.003–0.010
0.003–0.010
0.003–0.010
0.003–0.010
0.003–0.010
0.003–0.010
0.003–0.010
0.003–0.010
Note: These values are a guideline only. Refer
to the MACHINERY’S HANDBOOK for more
detailed information.
figure 54. Feed rate chart.
to set the feed rate:
1. turn the spindle OFF and allow it to com-
pletely stop before moving the feed rate
levers.
figure 55. Feed rate chart for turning.
NOTICE
never move levers while the lathe is run-
ning, and never force any lever when shift-
ing. if the lever will not engage, rotate the
chuck by hand while keeping light pressure
on the lever. as the chuck rotates it aligns
the gears and the lever will engage.
2. review the chart shown in figure 55 to
determine the correct configuration for your
desired feed rate.
the chart shows two numbers separated by
a slash in each box. the top number is the
carriage feed rate and the bottom number is
the cross slide feed rate.
the chart also shows the gear configuration
(upper left-hand corner) needed to reach the
feed speeds shown on the chart.
for example: For a carriage feed rate
of 0.0100", the knob/lever configuration is
pACu with the 32, 85, and 100 tooth gears
positioned as shown (see
figure 56).
3. turn the knobs and levers so each one points
to its respective letter in the indicated con-
figuration.
figure 56. Choosing 0.0100" carriage feed rate.
gear
Configuration
Carriage Cross slide
turning Feed
rate Chart