9
OPERATION MANUAL
Spindle Brake Lever:
Quickly stops the spindle
after the power to spindle is turned OFF.
High/Low Range Lever
: Selects between
low (50 RPM–400 RPM) and high (400 RPM–
3550 RPM) spindle speed ranges.
Spindle Speed Range Selector:
Used in con-
junction with high/low range lever. Engages
back gear for low (50–400 RPM), and disengag-
es back gear for high (400–3550 RPM) spindle
speed ranges.
Note:
When the back gears are engaged, the
spindle rotation, is reversed and the switch set-
tings need also to be reversed in low range
Digital Variable-Speed Display
: Displays the
spindle speed when the machine is in both the
high and low range.
Spindle Speed Range Selector:
Engages
back gears for low (50 RPM–400 RPM), and
disengages back gears for high (400 RPM–
3550 RPM) spindle speed ranges.
NOTE:
When engaged, the back gears reverse
the spindle rotation, causing spindle switch
settings to be reversed when in low range
Manual/Power Downfeed Selector:
Selects
between manual and power downfeed.
Coarse Downfeed Lever:
Quickly moves the
quill downward manually and automatically
retracts the spindle to top position when re-
leased. Typically used for drilling operations
Quill Lock Lever:
Locks quill in any position for
better rigidity
Adjustable Downfeed Stop:
Limits the depth
of the quill travel. The dial is graduated in in-
crements of 0.01mm. Typically used for repeat
operations.
Fine/Auto Downfeed Clutch Lever:
Engages
fine/auto-downfeed gears.
Fine Downfeed Handwheel:
Manually controls
slow spindle downfeed for fine Z-axis control.
Auto-Downfeed Direction Pin:
Starts, stops,
and reverses the auto-downfeed direction.
Auto-Downfeed Rate Selector:
Selects one of
the three auto-downfeed rates:
0.04 mm/rev
0.08 mm/rev
0.15 mm/rev
NOTE:
The correct feed selection depends on the type
of material and the number of cutting edges
on the tool. Refer to the Fitting and Machining
manual (Hafco Code L341 Page 7)
The following descriptions are explanations of the items for the variable speed head listed in Fig.3.
These will help the operator to become familiar with the basic controls and components of these
machines. Understanding these items and how they work will help the operator understand the
rest of the manual and stay safe when operating these machines.
CONTROLS AND COMPONENTS FOR THE BM-53VE & BM-63VE VARIABLE SPEED HEAD
Page 9
Instructions Manual for BM-23A (M595D)
12/02/2018
