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Southbend SB owner manual Scroll Chuck Clamping, Jaw Chuck, Mounting Workpiece, O P E R A T I O N

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Scroll Chuck Clamping

	O P E R A T I O N
For Machines Mfg. Since 5/11	O P E R A T I O N	13" Heavy 13® Gearhead Lathe

Scroll Chuck Clamping

This scroll-type chuck has an internal scroll-gear that moves all jaws in unison when adjusted with the chuck key. This chuck will hold cylindrical parts on-center with the axis of spindle rotation and can be rotated at high speeds if the workpiece is properly clamped and balanced.

Never mix jaw types or positions to accommodate an odd-shaped workpiece. The chuck will spin out of balance and

may throw the workpiece! Instead, use an independent jaw chuck or a faceplate.

	Safer Inside	Insufficient
	Jaw Use	Jaw Clamping
	Bar Stock
		Unstable
		Workpiece
	Safer Outside	Unsafe Jaw Position and
	Safer Outside	Poor Scroll Gear Engagement
	Jaw Use	Poor
	Shallow	Grip
	Bar Stock
		Unstable
		Workpiece
	Safer Outside	Unsafe Inside
	Safer Outside	Jaw Use
	Jaw Use	Jaw Use
	Shallow
	Bar Stock
	Unsafe Jaw Position and
	Poor Scroll Gear Engagement
	Safer Inside	Unsafe Jaw Position
	Jaw Use	Unsafe Jaw Position
	Jaw Use
	Cylinder
	Poor Scroll
	Gear Engagement

Figure 34. Jaw selection and workpiece holding.

4-Jaw Chuck

Refer to the Chuck Installation (see Page 33) and Chuck Removal (see Page 34) instructions to install or remove the 4-jaw chuck.

The 4-jaw chuck features independently adjustable hardened steel jaws for holding non- concentric or off-center workpieces. Each jaw can be independently removed from the chuck body and reversed for a wide range of work holding versatility.

Because of the dynamic forces involved in machining a non-concentric or off-center workpiece, always use a low spindle speed to reduce risk of the workpiece coming loose and being thrown from the lathe, which could cause death or serious personal injury.

Mounting Workpiece

1.DISCONNECT LATHE FROM POWER!

2.Place a chuck cradle or plywood on the bedway below the chuck to protect the bedway surfaces.

3.Use the chuck key to open each jaw so the workpiece will lay flat against the chuck face, jaw steps, or into the spindle opening.

4.With help from another person or a holding device, position the workpiece so it is centered in the chuck.

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Southbend SB owner manual Scroll Chuck Clamping, Jaw Chuck, Mounting Workpiece, O P E R A T I O N

Contents

MODEL SB1049 13 X MODEL SB1050 13 X 13 HEAVY 13 GEARHEAD LATHEOWNERS MANUAL January, 2012 by South Bend Lathe CoCustomer Service UpdatesScope of Manual Manual FeedbackSAFETY Table of ContentsINTRODUCTION PREPARATIONMAINTENANCE ACCESSORIESSERVICE TROUBLESHOOTINGAbout This Machine FeaturesForeword CapabilitiesGeneral Identiﬁcation Controls Components Master Power SwitchHeadstock I N T R O D U C T I O NCarriage Control PanelI N T R O D U C T I O N Tailstock Safety Foot BrakeEnd Gears I N T R O D U C T I O NModel Number MODEL SB1049 & SB1050 13 HEAVY 13 GEARHEAD LATHESSB1049 SB1050Model Number I N T R O D U C T I O NSB1049 SB1050I N T R O D U C T I O N DimensionsModel Number SB1049Model Number I N T R O D U C T I O NSB1049 SB1050Understanding Risks of Machinery Basic Machine SafetyS A F E T Y S A F E T Y S A F E T Y Additional Metal Lathe SafetyS A F E T Y Additional Chuck SafetyPower Supply Requirements on the next page for details For Power ConnectionFor Cleaning & Assembly Preparation OverviewSingle-Phase Power Supply RequirementsS Type, 3-Wire, 12 AWG, 300 VAC AvailabilityExtension Cords Grounding RequirementsP R E P A R A T I O N GROUNDED L6-30 LOCKING RECEPTACLE Grounding Prong is Hooked L6-30Unpacking Pre-Installed Not ShownInventory Main Inventory 1 FigureBefore cleaning, gather the following Cleaning & ProtectingBasic steps for removing rust preventative P R E P A R A T I O NWeight Load Electrical InstallationLocation Physical EnvironmentTo lift and move the lathe Lifting & MovingP R E P A R A T I O N Leveling Leveling & MountingP R E P A R A T I O N Lubricating Lathe AssemblyBolting to Concrete Floors P R E P A R A T I O NTo connect the power cord to the lathe Power ConnectionAdding Coolant To PlugTo test run your machine Test RunP R E P A R A T I O N Neutral Feed Range LeverHigh Spindle SpeedCarriage to Brake & Switch on Page 78 to makeFeed Control Lever Disengaged Halfnut LeverP R E P A R A T I O N Factory adjustments that should be veriﬁed Recommended AdjustmentsSpindle Break-In To perform the spindle break-inO P E R A T I O N Operation OverviewTo complete a typical operation, the operator does the following Chuck & Faceplate Mounting Installation & Removal DevicesO P E R A T I O N To install the chuck Chuck InstallationINCORRECT O P E R A T I O NRegistration Marks Chuck RemovalTo remove the chuck O P E R A T I O N4-Jaw Chuck Scroll Chuck ClampingMounting Workpiece O P E R A T I O NO P E R A T I O N FaceplateFigure 35. 4-jaw tightening sequence Figure 36. Example photo of non-cylindrical workpieceTailstock Using QuillPositioning Tailstock To mount a non-concentric workpiece to the faceplateTo install tooling in the tailstock Installing ToolingO P E R A T I O N Removing Tooling Offsetting TailstockTo offset the tailstock Tools NeededItems Needed Aligning Tailstock to Spindle CenterlineTo align the tailstock to the spindle centerline O P E R A T I O NDead Centers CentersO P E R A T I O N Mounting Dead Center in Spindle Live CentersRemoving Center from Spindle Mounting Center in TailstockMounting Workpiece Between Centers Removing Center from TailstockO P E R A T I O N Drift Key Slot Figure 51. Drift key slot in the side of the quillSteady Rest To install and use the steady restO P E R A T I O N Carriage & Slide Locks Follow RestO P E R A T I O N Cap Screws Figure 55% Follow rest attachmentTo install a tool in the tool post Installing ToolCompound Rest Four-Way Tool PostTo align the cutting tool with the tailstock Aligning Cutting Tool with Spindle Centerlinecenter Top ViewMicrometer Stop Adjustable Feed StopTo set the micrometer stop O P E R A T I O NSpindle Speed Manual FeedCarriage Handwheel Cross Slide HandwheelSetting Spindle Speed of 200 RPM Setting Spindle Speed350 RPM or lower when using the high H gearbox range Conﬁguration ExamplesSetting Spindle Speed of 2000 RPM Power Feedto HIGH 2000 RPMD. Quick-change Gearbox Feed Levers Power Feed ControlsO P E R A T I O N Setting Power Feed Rate of 0.18mm/rev Setting Power Feed RateO P E R A T I O N Standard End Gear Conﬁguration End GearsO P E R A T I O N 18 LCS8WConﬁguring End Gears Alternate ConﬁgurationTo conﬁgure the end gears Tools NeededThreading Setting Metric Thread Pitch ofHeadstock Threading Controls O P E R A T I O NThread Dial Apron Threading ControlsCross Slide DisengagedTPI Divisible By Thread Dial ChartEven TPI Not Divisible By Odd Numbered TPI1⁄4 or 3⁄4 Fractional TPI Chip Drawer27⁄8 TPI O P E R A T I O NTo use the coolant system on your lathe Coolant SystemBIOLOGICAL & POISON HAZARD O P E R A T I O NA C C E S S O R I E S AccessoriesSB1279-10 Pc. Precision 5-C Collet Set D1-5 Back Plates SB1397-61⁄4 SB1399-81⁄4 SB1401-101⁄2SB1238-High Performance MT#3 Live Center Keyless Integral Chucks SB1379-MT #3 1⁄2 SB1380-MT #3 5⁄8ss 7ATERPROOF DESIGN SB1245-MT#2 Bull Nose CenterSB1251-Machinists Oak Tool Box SB1365-Way OilSB1282-High Performance MT#3 Live Center Set A C C E S S O R I E SAlways disconnect power Maintenance Scheduleperforming maintenance M A I N T E N A N C EAnnual Service South Bend Lathe Co. Lathe Monthly Maintenance Chartposal, and safety Service ItemChecking Oil Level LubricationAdding Oil Changing OilApron Quick-Change GearboxDraining Oil Draining Oil & Flushing ReservoirLongitudinal Leadscrew One-Shot OilerM A I N T E N A N C E Drain Plug Figure 104. Location of apron drain plugM A I N T E N A N C E Ball Oilers & Oil CupA B C D EF Figure 107. Tailstock ball oilersLubricating Handling & CareEnd Gears M A I N T E N A N C EHazards Coolant System Servicefor proper disposal M A I N T E N A N C EChanging Coolant Adding FluidItems Needed To change the coolantTo prepare the lathe for storage Machine StorageM A I N T E N A N C E Compound Rest Backlash AdjustmentCross Slide S E R V I C EGib Adjustment Leadscrew End Play AdjustmentTo remove leadscrew end play S E R V I C ES E R V I C E To adjust the V-belts Half Nut AdjustmentTo adjust the half nut V-BeltsTo adjust the brake and brake switch Brake & SwitchS E R V I C E Tools NeededFigure 126. Brake pedal travel adjustment Figure 125. Brake belt adjustment componentsBrake Switch Pedal Cam Figure 127. Brake switch and pedal cam S E R V I C ETo replace the shear pin Leadscrew Shear Pin ReplacementS E R V I C E Tools NeededS E R V I C E Shear Pin Figure 132. New shear pin installed in boreInner Bore Outer Bore Figure 131. Shear pin bores aligned Rotate Washer Slot Figure 133. Shroud washer positioningGap Removal Gap Insert Removal & InstallationS E R V I C E Tools NeededS E R V I C E Gap InstallationPossible Solution SymptomPossible Cause Machinerys Handbook or a speeds and feedsPossible Solution SymptomPossible Cause PagePossible Solution SymptomPossible Cause Workpiece isE L E C T R I C A L Electrical Safety InstructionsWIRING DIAGRAM COLOR KEY Power Supply Connection Wiring OverviewChuck Guard Limit Switch Page Brake Pedal Micro Switch Page Page Work Lamp Page Spindle Switches PageE L E C T R I C A L Component Location IndexP age P ageTo Chuck Guard Micro Switch, Page Electrical Cabinet WiringTo Power Supply Connection, Page POWERE L E C T R I C A L Electrical BoxFigure 138. Electrical box Spindle Motor Coolant Pump Motor WiringE L E C T R I C A L SpindleSpindle Switches Control Panel WiringFigure 140. Spindle rotation switch location E L E C T R I C A L220VAC L6-30 Plug as recommended Additional Component WiringPower Connection Master Power SwitchP A R T S Headstock CoverCAP SCREW M6-1 X TOP COVER GASKETControls HeadstockP A R For Machines Mfg. Since 5/11P A R T S Headstock Controls Parts ListP A R T S Headstock Internal GearsCOMBO GEAR ASSEMBLY 22T/76T Headstock Internal Gears Parts ListCOMBO GEAR ASSEMBLY 30T/38T COMBO GEAR ASSEMBLY 45T/52TP A R T S Headstock Transfer GearsSTEEL FLUTED RIVET 2 X 5MM COMBO GEAR ASSY 21T/42TGearbox GearsP A R T S P A R T S Gearbox Gears Parts ListNEEDLE ROLLER BEARING TAF202820 EXT RETAINING RING 22MMR T S Gearbox ControlsP A R T S Gearbox Controls Parts ListLOWER MIDDLE PARTITION SUPPORT P A R T S Apron Front ViewP A R T S Apron Front View Parts ListCOMPRESSION SPRING 6 X COMPRESSION SPRING 4 XP A R T S Apron Rear ViewP A R T S Apron Rear View Parts ListTHRUST BEARING NTB/AS-2542 NEEDLE ROLLER BEARING NK29/30P A R T S Compound Rest & Tool PostP A R T S Saddle Top ViewP A R T S Saddle Top View Parts ListTHRUST BEARING NTB/AS2-1730 P A R T S Saddle Bottom ViewSTRAIGHT ADAPTER 1/8PT X 4MM STRAIGHT ADAPTER 1/8 X 6MMMicrometer Stop Dial IndicatorP A R T S P A R T S Bed & ShaftsSB1050 P A R T S Bed & Shafts Parts ListLONGITUDINAL LEADSCREW SB1049 LONGITUDINAL LEADSCREW SB1050P A R T S End GearsGEAR FLAT WASHER 14MM GEAR FLAT WASHER 8MMP A R T S Main MotorSIDE MOTOR ACCESS COVER Main Motor Parts ListP A R T S PULLEY FLAT WASHER 10MMP A R T S Stands & PanelsP A R T S Cabinets & Panels Parts ListBRAKE PEDAL ROD SB1049 BRAKE PEDAL ROD SB1050P A R T S TailstockP A R T S Tailstock Parts ListHANDLE CAP SCREW M8-1.25 LOCK SHAFT FLAT WASHER 12MMFollow Rest Steady RestP A R T S P A R T S Electrical Cabinet & Control PanelElectrical Cabinet P A R T S Accessories1551 P A R T S Front Machine Labels1611 P A R T S Rear & Side Machine LabelsSB MODEL NUMBER LABEL SB1049 SB MODEL NUMBER LABEL SB1050Page W A R R A N T Y Warranty#TS14496 Printed In U.S.A