Grizzly G0705 owner manual Calculating Spindle Speed for Drilling, Using the Drill Bit Speed Chart

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Calculating Spindle Speed for Drilling

Using the Drill Bit Speed Chart

The chart shown in Figure 33 is intended as a guide only. Always follow the manufacturer's speed recommendations if provided with your drill bits, cutters, or hole saws. Exceeding the recommended speeds may be dangerous to the operator.

The speeds shown here are intended to get you started. The optimum speed will always depend on various factors, including tool diameter, drilling pressure, material hardness, material quality, and desired finish.

Often, when drilling materials other than wood, some type of lubrication is necessary.

Lubrication Suggestions

Wood	None
Plastics	Soapy Water
Brass	Water-Based Lubricant
Aluminum	Paraffin-Based Lubricant
Mild Steel	Oil-Based Lubricant

Larger bits turning at slower speeds tend to grab the workpiece aggressively. This can result in the operator's hand being pulled into the bit or the workpiece being thrown with great force. Always clamp the workpiece to the table to prevent injuries.

Twist/Brad Point Drill Bits	Soft Wood	Hard Wood	Plastic	Brass	Aluminum	Mild Steel
1/16" – 3/16"	3000	2500	2500	2500	3000	2500
13/64" – 3/8"	2000	1500	2000	1250	2500	1250
25/64" – 5/8"	1500	750	1500	750	1500	600
11/16" – 1"	750	500	1000	400	1000	350
Spade/Forstner Bits	Soft Wood	Hard Wood	Plastic	Brass	Aluminum	Mild Steel
1/4" – 1/2"	2000	1500
9/16" – 1"	1500	1250
1-1/8" – 1-7/8"	1000	750
2–3"	500	350
Hole Saws	Soft Wood	Hard Wood	Plastic	Brass	Aluminum	Mild Steel
1/2" – 7/8"	500	500	600	600	600	500
1" – 1-7/8"	400	400	500	500	500	400
2" – 2-7/8"	300	300	400	400	400	300
3" – 3-7/8"	200	200	300	300	300	200
4" – 5"	100	100	200	200	200	100
Rosette Cutters	Soft Wood	Hard Wood	Plastic	Brass	Aluminum	Mild Steel
Carbide Insert Type	350	250
One-Piece Type	1800	500
Tenon/Plug Cutters	Soft Wood	Hard Wood	Plastic	Brass	Aluminum	Mild Steel
3/8" – 1/2"	1200	1000
5/8" – 1"	800	600

Figure 33. Drill bit speed chart.

-30-	Model G0705 (Mfg. since 09/09)

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Contents Model G0705 Page Table of Contents Introduction Manual AccuracyContact Info Machine DescriptionIdentification Machine Data Sheet Other Features Safety Safety Instructions for MachineryWearing Proper APPAREL. Do not wear Hearing PROTECTION. Always wear hearSafety Instructions for Machinery Additional Safety for Mill/Drills Power Supply AvailabilityFull-Load Current Rating Circuit InformationGrounding Requirements Extension CordsVoltage Conversion Minimum Gauge Size 12 AWGTo rewire the Model G0705 for 110V opera- tion 110V ConversionJumper positions on terminal block Cord rewired for Model G0705 Mfg. since 09/09 Setup Needed for SetupUnpacking Description QtyNot Shown Crate Contents Figures 11 QtyInventory Cleanup Before cleaning, gather the followingSite Considerations Using the Included Leveling Bolt Mounting OptionsUsing Machine Mounts Mounting to Shop FloorTo assemble your machine AssemblyMounting to a Workbench To move your machine into position Moving & Placing MachineLeveling Test Run Break-In To break in the spindleOperations Operation OverviewBasic Controls Spindle controls Model G0705 Mfg. since 09/09 Head crank To calculate the needed spindle speed in RPM Calculating Spindle Speed for MillingCutting Speeds for High Speed Steel HSS Cutting Tools Speed Changes Tools Needed QtyTo change spindle speeds PositionLubrication Suggestions Using the Drill Bit Speed ChartCalculating Spindle Speed for Drilling To operate the micro-adjustment handwheel Spindle HeightTo remove tooling To install toolingLoading Tooling To use the drift key To install the drill chuck onto the arborDrill Chuck Arbor Collet Adapters Depth Stop To calibrate the depth stopTable Travel Graduated DialsLongitudinal Feed Cross FeedAccessories H2689-R-8 Quick Change Collet SetG9299-10 Yuasa-Type Rotary Table G1076-52-PC. Clamping KitH8370-Power Feed for Mills G2861-Face Mill G4051-Carbide Insert for Face MillG9765-9-PC. Ball End Mill Set G5641-1-2-3 Blocks G9815-Parallel Set H5556-Edge Finder SetSchedule MaintenanceCleaning Protecting Lubrication Table LeadscrewsPoints requiring periodic lubrication are Items Needed QtyBelts Belt tension Model G0705 Mfg. since 09/09Service TroubleshootingSymptom Possible Cause Possible Solution Gibs Return Spring To adjust the table gibsTo adjust the spring tension Adjusting spring tension Tighten the black thumb knob Leadscrew BacklashWiring Wiring Safety InstructionsG0705 Wiring Diagram Electrical component locations Headstock Headstock Parts List DescriptionPCAP05 Base Base Parts List Electrical Components Breakdown and List 309Labels Breakdown and List Warranty Card CommentsGrizzly INDUSTRIAL, INC BOX BELLINGHAM, WAWarranty and Returns Warranty and ReturnsOrder Hours a DAY