Lathe Spindle

How to calculate speed of lathe spindle turning 1/4 inch drill hole in a piece of 3inch diameter?

How to calculate speed of lathe spindle turning 1/4 inch drill hole in a piece of 3inch diameter?
Calculate the speed of lathe spindle should be turning to a drill 1/4 inch diameter hole in a piece of 3inch diameter stainless steel using a high-speed drill bit?need to know formula pls

On most lathes you set the spindle speed to what you need for the material you are machining. So I'm confused by your question do you want to know the optimum speed for drilling a 0.250" hole, if so what material are we talking about?

Discover Lathe Spindle On eBay Below:

Jet Elite EGH 2180 21x80 Large Spindle Bore Clutch Lathe 892250 FREE Shipping
Jet Elite EGH 2180 21x80 Large Spindle Bore Clutch Lathe 892250 FREE Shipping
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3 16 SPINDLE MOTOR ER11 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL
3 16 SPINDLE MOTOR ER11 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL
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3 16 SPINDLE MOTOR ER20 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL
3 16 SPINDLE MOTOR ER20 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL
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1 16 SPINDLE MOTOR ER11 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL
1 16 SPINDLE MOTOR ER11 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL
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1PC ER20 3 16 SPRING COLLET CNC MILLING LATHE CHUCK TOOL AND SPINDLE MOTOR
1PC ER20 3 16 SPRING COLLET CNC MILLING LATHE CHUCK TOOL AND SPINDLE MOTOR
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ER11 1 4 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL AND SPINDLE MOTOR
ER11 1 4 SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL AND SPINDLE MOTOR
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ER16 4MM SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL AND SPINDLE MOTOR
ER16 4MM SUPER PRECISION COLLET CNC MILLING LATHE CHUCK TOOL AND SPINDLE MOTOR
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Mori Seiki 5030615 CNC Lathe 40 Taper Replacement Tool Spindle Drive
Mori Seiki 5030615 CNC Lathe 40 Taper Replacement Tool Spindle Drive
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JET Wood Lathe 12 in x 21 in 115 Volt 1 HP Spindle Lock Tailstock Slide
JET Wood Lathe 12 in x 21 in 115 Volt 1 HP Spindle Lock Tailstock Slide
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Lathe Spindle Taper Sleeve Adapter MT4 to 4C
Lathe Spindle Taper Sleeve Adapter MT4 to 4C
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Lathe Spindle Taper Sleeve MT 5 to MT2
Lathe Spindle Taper Sleeve MT 5 to MT2
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Vintage Lathe Inside Tool Post Grinding Arbor Spindle Line Shaft
Vintage Lathe Inside Tool Post Grinding Arbor Spindle Line Shaft
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Lathe Spindle Taper Sleeve MT 5 to MT2
Lathe Spindle Taper Sleeve MT 5 to MT2
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Southbend Lathe Heavy 10 10L Headstock Spindle  1 1 8 8tpi
Southbend Lathe Heavy 10 10L Headstock Spindle 1 1 8 8tpi
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AUTOBLOK 10 3 Jaw Power Lathe Chuck A2 8 Spindle Mount
AUTOBLOK 10 3 Jaw Power Lathe Chuck A2 8 Spindle Mount
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Hendey 12 Lathe Front Spindle Bearing Collar 34
Hendey 12 Lathe Front Spindle Bearing Collar 34
$40.00
AUTOBLOK 10 3 Jaw Power Lathe Chuck A2 8 Spindle Mount Model 250 HGN
AUTOBLOK 10 3 Jaw Power Lathe Chuck A2 8 Spindle Mount Model 250 HGN
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SJorgen Hardinge No 2 Spindle Lathe collet speed Chuck D6 Mount
SJorgen Hardinge No 2 Spindle Lathe collet speed Chuck D6 Mount
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R8 ER16 7 16 Collet Chuck CNC Milling Lathe R8 Spindle Holder Tool USA SELL
R8 ER16 7 16 Collet Chuck CNC Milling Lathe R8 Spindle Holder Tool USA SELL
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Vintage Craftsman 109 6 Metal Lathe Headstock Spindle 52 Tooth Gear  3247
Vintage Craftsman 109 6 Metal Lathe Headstock Spindle 52 Tooth Gear 3247
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Mori Seiki SL 204 2003 CNC Lathe with Sub Spindle Barfeed Parts Catcher
Mori Seiki SL 204 2003 CNC Lathe with Sub Spindle Barfeed Parts Catcher
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MORI SEIKI SL 80 B 102in HOLE THROUGH SPINDLE
MORI SEIKI SL 80 B 102in HOLE THROUGH SPINDLE
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13 MACHINIST Expanding Lathe Mandrel SOUTH BEND SPINDLE SHAFT SPLINE HEADSTOCK
13 MACHINIST Expanding Lathe Mandrel SOUTH BEND SPINDLE SHAFT SPLINE HEADSTOCK
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South Bend Lathe  others 1 7 8 x 8 tpi Spindle Thread Protector
South Bend Lathe others 1 7 8 x 8 tpi Spindle Thread Protector
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atlas craftsman lathe 6 spindle 32t gear 3221 563 id excellent
atlas craftsman lathe 6 spindle 32t gear 3221 563 id excellent
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Jacobs Spindle Nose Lathe Chuck with 11 Rubber Flex Collets
Jacobs Spindle Nose Lathe Chuck with 11 Rubber Flex Collets
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Jacobs Spindle Nose Lathe Chuck with 11 Rubber Flex Collets
Jacobs Spindle Nose Lathe Chuck with 11 Rubber Flex Collets
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D1 8 Spindle Cam Lathe New Made in USA
D1 8 Spindle Cam Lathe New Made in USA
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18 Lathe Face Plate L0 Spindle Mount 2 Thickness
18 Lathe Face Plate L0 Spindle Mount 2 Thickness
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NEW 5MT 0000197 CNC PRECISION LONG SPINDLE LATHE LIVE CENTER MORSE TAPER 5
NEW 5MT 0000197 CNC PRECISION LONG SPINDLE LATHE LIVE CENTER MORSE TAPER 5
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NEW 6MT CNC PRECISION LONG SPINDLE LATHE LIVE CENTER MORSE TAPER 6
NEW 6MT CNC PRECISION LONG SPINDLE LATHE LIVE CENTER MORSE TAPER 6
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20 Lathe Face Plate L 2 Spindle Mount 2 3 4 Thickness
20 Lathe Face Plate L 2 Spindle Mount 2 3 4 Thickness
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36 Swing x 120 Center Poreba Oil Field 12 Hollow Spindle Engine Lathe
36 Swing x 120 Center Poreba Oil Field 12 Hollow Spindle Engine Lathe
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19 3 4 Lathe Face Plate L 2 Spindle Mount 2 1 2 Thickness
19 3 4 Lathe Face Plate L 2 Spindle Mount 2 1 2 Thickness
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JACOBS SPINDLE NOSE LATHE COLLET CHUCK L1
JACOBS SPINDLE NOSE LATHE COLLET CHUCK L1
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Mazak Rex Heavy Duty Gap Bed Lathe 30 x 120 40 in Gap 4 1 4 Spindle Bore 20HP
Mazak Rex Heavy Duty Gap Bed Lathe 30 x 120 40 in Gap 4 1 4 Spindle Bore 20HP
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FEELER ULTRA PRECISION SECOND OPERATION LATHE 5 C SPINDLE Hardinge DV59 Copy
FEELER ULTRA PRECISION SECOND OPERATION LATHE 5 C SPINDLE Hardinge DV59 Copy
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Star Transfermatic Double Spindle Brake Drum Lathe Model 53 DS
Star Transfermatic Double Spindle Brake Drum Lathe Model 53 DS
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32x120cc NATIONAL Hollow Spindle Lathe 9 Hole Taper 4 Jaw Chuck
32x120cc NATIONAL Hollow Spindle Lathe 9 Hole Taper 4 Jaw Chuck
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