Grizzly G0756 owner manual Drill Press Operations

Drill Press Operations

Symptom	Possible Cause		Possible Solution
Breaking tools or cutters.	1.	Spindle speed/feed rate is too fast.	1.	Set spindle speed correctly (Page 25) or use a
				slower feed rate.
	2.	Cutting tool getting too hot.	2.	Use coolant or oil for appropriate application.
	3.	Spindle extended too far down.	3.	Fully retract spindle and lower headstock. This
				increases rigidity.
Drilling stops, but the motor	1.	Bit slips in chuck.	1.	Tighten bit; inspect bit for burrs or other obstructions
still operates.				that might interfere with clamping surface.
The chuck wobbles or is	1.	Foreign material is stuck between	1.	Remove the arbor/chuck assembly and clean the
loose on the spindle shaft.		the arbor-to-spindle mating surface.		tapered arbor and spindle mating surfaces, then
				reassemble.
	2.	Damaged chuck or arbor.	2.	Replace as necessary.
The spindle does not retract	1.	The quill shaft is gummy with metal	1.	Clean shaft and lubricate with a light coat of oil.
completely in the uppermost		chips and oil.
position or it binds.
The quill has excessive	1. the quill bearings are worn or		1.	Replace the bearings.
deflection.		damaged.
	2.	The quill shaft is at fault.	2.	Replace the quill shaft.
Drill bit wobbles, holes are	1.	Drill bit installed incorrectly.	1.	Remove drill bit and re-install.
oversized.
Workpiece vibrates or	1.	Table locks not tight.	1.	Tighten table release handles (Page 24).
chatters during operation.	2.	Workpiece not securely clamped to	2.	Check that clamping is tight and sufficient for the job.
		table or into drill vice.		Make sure drill vice is tight to the table.
	3.	Spindle speed/feed rate is too fast.	3.	Set spindle speed correctly (Page 25) or use a
				slower feed rate.
	4.	Spindle extended too far down.	4.	Fully retract spindle and raise table. This increases
				rigidity.

-36- Model G0756 (Mfg. Since 2/13)