HEALD - Service Manuals
17 manuals available for download
HEALD is a trusted manufacturer of internal grinding machines and bore-finishing equipment renowned for precision machining across decades of industrial use. Our comprehensive collection includes detailed service manuals, repair guides, and parts lists available as PDF downloads to support maintenance, troubleshooting, and workshop operations. Whether you need technical documentation for routine maintenance or advanced repair procedures, HEALD owner's manuals and user guides provide the essential information required to keep your grinding machinery operating at peak performance. Access workshop manuals and complete technical data instantly to minimize downtime and ensure proper equipment care.
Bore-Matic 221-426 Service Manual and Parts List
This comprehensive service manual and parts list covers the complete Bore-Matic 221 through 426 series, providing technicians and experienced operators with detailed repair and maintenance documentation. Pages 53–55 feature technical schematic diagrams and component layout drawings that illustrate internal mechanisms, electrical routing paths, and assembly configuration details, with all components clearly referenced by number for precise identification and ordering. Whether you're performing routine maintenance, troubleshooting a mechanical issue, or sourcing replacement parts, this workshop manual gives you the factory-level technical information needed to service these industrial boring machines effectively.
Heald 271-276 Internal Grinding Machines Service Manual
Comprehensive service manual for Heald chuck-type internal grinding machines covering models 271 and 272 (standard and tool room versions), model 274 (universal), and models 275 and 276 (extended bridge configurations). This workshop manual provides complete repair and maintenance guidance including installation procedures, detailed operating instructions with essential safety precautions, push button and switch operation, throttle control mechanics, table lever and dog adjustment, workhead belt tension settings, oil mist lubrication systems, grinding operation setup, wheelhead installation and drive alignment, wheel sizing charts and operating speeds, coolant flow regulation, swivel workhead positioning, grinding stroke calibration, feed box adjustment, and comprehensive hydraulic system documentation covering the power unit, pump specifications, and check valve operation. An authoritative reference for technicians performing maintenance, troubleshooting, and repairs on these precision internal grinding machines. Original USA publication, copyright 1963. Table of Contents: - GENERAL DESCRIPTION - INSTALLATION - Lifting the Machine - The Foundation - Clean the Machine - Fill the Hydraulic and Ways Lubrication Systems - Connect the Machine to the Power Line - Align the Machine - Attach Coolant Tank - OPERATING INSTRUCTIONS - General Safety Precautions - Push Buttons and Switches - Throttle - Table Lever - Table Dogs - Adjust Workhead Belt Tension - Oil Mist Lubricator - SETTING UP - Attach Work Fixture - Install the Wheelhead and Adjust Drive - Install and Remove Wheelhead Quill - Wheel Size and Maximum Safe Operating Speed - Adjust Coolant Flow - Swivel Workhead - Set Grinding Stroke - Adjust Dresser Unit - Set Speeds - True Wheel - Feed Box - Adjust Feed Box and Diamond - Hand Table Feed and Facing Attachment - Workhead Cross Slide Position Indicator - Swivel Wheelhead Cross Slide - HYDRAULIC SYSTEM - Power Unit - Pumps - Check Valve - Machine Oil Pressure
Heald 271-276 Internal Grinding Machines Service Manual
Comprehensive service manual and repair parts documentation for Heald chuck-type internal grinding machines covering models 271 and 272 (Plain and Tool Room versions), model 274 (Universal), and models 275 and 276 (Extended Bridge variants). This workshop manual details installation setup, lubrication schedules and specifications, operating procedures, machine configuration and preparation, hydraulic system operation and maintenance, wheelhead service and adjustment, capacity reference charts, and complete illustrated parts lists. Essential reference for technicians maintaining and troubleshooting these precision grinding machines. Original 1950 publication.
Heald 72A Plain Internal Grinding Machine Parts List
Heald 72A Plain internal grinding machine parts list and service documentation. This comprehensive parts manual covers the Style 72A configuration from The Heald Machine Company, Worcester, Massachusetts, with detailed sectional diagrams and numbered component breakdowns across all major machine units. Includes belt-driven workhead assemblies available in single-speed or five-speed transmission options, as well as plain machine setups equipped with dial indicator sizing systems. Essential reference for technicians sourcing replacement parts, performing maintenance, or conducting repairs on this industrial grinding equipment. Bulletin 7089-3012, Issue 1. Table of Contents: - Attachments - Collet Operating Mechanism - Cross Slide for Workhead - Hand Feed for Table - Base Parts - Chuck Water Guard - Water Guard - Countershaft Parts - Cross Slide - Hand Wheel - Slide - Cylinder and Piston - Dial Indicator - Indicator Bracket - Diamond Base - Diamond Holder - Dogs - Foot Treadle - Oil System - Oil Piping - Oil Pump - Reverse Mechanism - Rear Shaft, Belt Drive - Motor Drive - Water - Attachments - Valve - Tank - Pump - Workhead No. 2 - Workhead Heavy Duty No. 3 - Workhead Clutch Brake - Clutch Operating Mechanism - Worm Bracket - Wheel Guard - Wheelhead Idler Pulley - Idler Pulley Bracket - Idler Pulley Bracket - Idler Pulley - Idler Pulley - Idler Pulley Motor Drive - Belt Tightener Pulley - Wheel Truing Device
Heald 72A Plain Internal Grinding Service Manual
Complete service manual for the Heald Style No. 72A Plain Internal Grinding Machine, a precision cylindrical grinding system from The Heald Machine Company of Worcester, Massachusetts. This workshop manual covers machine setup, operator procedures, and maintenance guidance, with detailed information on configurable dial indicator sizing arrangements. Includes comprehensive service parts lists and repair information for technicians performing field work or shop maintenance. Published as Bulletin 7089-501.1 Issue 2 by the manufacturer (established 1826).
Heald Bore-Matic 521-524 Service Manual
Service and repair manual for Heald Bore-Matic boring machine models 521, 522, and 524. This workshop manual covers installation procedures, lubrication schedules, operating instructions, hydraulic system components, boring head and fixture installation, capacity charts, and detailed specifications. Essential reference for maintenance and troubleshooting of these precision boring machines. Published by The Heald Machine Company, Worcester, Massachusetts. Copyright 1951. Table of Contents: - INSTALLATION - Lifting the Machine - The Foundation - Clean the Machine - Fill the Hydraulic System - Connect the Machine to the Power Line - Attach Cutting Fluid Tank - LUBRICATION - Motor Lubrication - Boringheads and Idlers - Table Ways - OPERATING INSTRUCTIONS - Push Buttons - Hand Throttle - Intermediate Stop - Locate Fast Feed Switch Cam - Locate Slow Feed Switch Cam - Locate Reverse Switch Cam - Stop Dog - Throttles - Boringhead Control - HYDRAULIC SYSTEM - Power Unit - Pump - Check Valve - Relief Valve - Oil Pressure - Hydraulic Circuit - Rapid Advance - Fast Feed - Slow Feed - Two-Way Boring - Intermediate Stop Valve - Start Valve - Uneven Table Motion - CYCLES - BORINGHEAD AND FIXTURE INSTALLATION - CAPACITY CHARTS - BORINGHEAD SPECIFICATIONS - SERVICE REPAIR PARTS
Heald Bore-Matic Service Manual
Service manual for Heald Bore-Matic boring machines, covering models 221, 222, 224, 321, 322, 324, 421, 422, 424, 425, and 426. This workshop manual provides complete technical guidance for maintenance, troubleshooting, and repair across single and multi-spindle configurations. The manual begins with general machine description and installation procedures, then moves into detailed operating instructions for all control mechanisms—push buttons, hand throttle, feed cams, and tappet adjustment. You'll find comprehensive coverage of pilot valve operation, throttle systems, and boring head control essential for both routine setup and problem diagnosis. The hydraulic system section documents the power unit, check valves, relief valves, and oil pressure settings across all operating modes, with fully illustrated circuits for rapid advance, fast feed, advance start, slow feed, table stop, two-way boring, intermediate stop valve function, start valve operation, and correction of uneven table motion. Parts list information supports field repair and component replacement. This PDF serves as the authoritative reference for keeping Bore-Matic machines running reliably in production. Table of Contents: - GENERAL DESCRIPTION - INSTALLATION - Lifting the Machine - The Foundation - Clean the Machine - Fill the Hydraulic System - Connect the Machine to the Power Line - Attach Cutting Fluid Tank - Fill the Table Ways Lubrication Tank - OPERATING INSTRUCTIONS - Push Buttons - Hand Throttle - Intermediate Stop - Stop Dog - Fast Feed Cam - Slow Feed Cam - Advance Start Cam - Adjust Tappets - Pilot Valve - Throttles - Boringhead Control - HYDRAULIC SYSTEM - Power Unit - Check Valve - Relief Valve - Oil Pressure - Hydraulic Circuit - Rapid Advance - Fast Feed - Advance Start - Slow Feed - Table Stop - Two-Way Boring - Intermediate Stop Valve - Start Valve - Uneven Table Motion
Heald Bore-Matic Service Manual Instruction
Complete service manual and parts documentation for Heald Bore-Matic precision boring machines, covering models 221, 222, 224, 321, 322, 324, 421, 422, 424, 425, and 426. This workshop manual provides detailed setup guidance including machine installation on foundation, hydraulic system commissioning, electrical connection, cutting fluid tank integration, and lubrication procedures. Operating instructions cover all controls—push buttons, hand throttle operation, feed cam adjustment, tappet tuning, pilot valve function, and boring head management. The hydraulic system section documents the power unit architecture, check and relief valve operation, pressure settings, feed mechanisms, table stop functionality, and intermediate stop valve calibration. Published by The Heald Machine Company, Worcester, Massachusetts. An essential reference for technicians performing routine maintenance, troubleshooting, and repairs on these industrial boring machines.
Heald Models 261/361 Service Manual
Service manual for Heald Models 261 and 361 rotary surface grinding machines, published by The Heald Machine Company in Worcester, Massachusetts (copyright 1958). This workshop manual covers machine description, complete installation guidance including lifting and foundation setup, hydraulic system operation, and lubrication requirements. Operating instructions detail push button controls, switch operation, throttle management, chuck handling, and wheel slide adjustment. Setup procedures encompass grinding wheel mounting and truing, coolant system adjustment, magnetic chuck loading, grinding stroke configuration, speed settings, feed box calibration, and wheel dressing. Essential reference for technicians performing maintenance, troubleshooting, and repairs on these classic precision grinding machines. Table of Contents: - GENERAL DESCRIPTION - INSTALLATION - Lifting the Machine - The Foundation - Clean the Machine - Connect and Fill the Hydraulic System - Connect the Lubricating Tank—Model 261 - Connect the Machine to the Power Line - Wheel Spindle Motor Plate—Model 361 - Align the Machine - Attach the Coolant Tank - Lubrication - OPERATING INSTRUCTIONS - Push Buttons and Switches - Throttle Lever - Table Lever - Chuck Lever - Chuck Speed Knob - Wheel Slide Lever - Sparkout - Wheel Slide Switch - SETTING UP - Mount Grinding Wheel - Adjust Coolant Spout - Load Work on Magnetic Chuck - Adjust Diameter and True New Wheel - Set Grinding Stroke - Positive Stop Dog - Set Speeds - Feed Box - Adjust Picker Feed Box—Automatic Machine - Adjust Picker Feed Box—Plain Machine - Adjust Impulse Feed Box—Automatic Machine - Adjust Impulse Feed Box—Plain Machine - Dress the Wheel - Grind Concave and Convex Surfaces
Heald No. 46B-47A-48A-49 Bore-Matics Parts List
Heald Bore-Matics Parts List and identification manual covering models No. 46B, No. 47A, No. 48A, and No. 49 production boring machines, plus the Heald Tool Sharpening Machine. This service and repair resource indexes all major mechanical and hydraulic assemblies: boring head bearings, full drive train (clutch, brake, coupling shaft, idler gear, motor drive, oil pump), hydraulic control and actuation (control valve box, cylinders, pistons, oil lines, valve plates), lubrication circuits, and tool sharpening attachments. Part numbering charts organize components for accurate identification and parts ordering across these industrial models.
Heald Precision Wheelheads Technical Data
Technical reference manual for Heald Red Head precision wheelheads used in internal grinding machines. This workshop documentation covers permanently lubricated wheelhead designs available in three configurations: naked, quill, and sleeve styles. Details engineering specifications including permanent grease lubrication systems, labyrinth seal designs, super-precision bearing assemblies, and rigid bore-matic construction for consistent grinding performance. Includes technical data for the Model 171 Gage-Matic internal grinding machine, preloading specifications using spring mechanisms, and design transition notes documenting the shift from oil-lubricated to grease-lubricated wheelhead designs. Essential reference for maintenance, setup, and troubleshooting of precision grinding equipment.
Heald Size-Matic Internal Grinding Service Manual
Service manual and parts guide for Heald Size-Matic internal grinding machines, Style No. 72A3-72A5, covering both two-motor and three-motor drive configurations. This workshop manual provides detailed instruction for installation, lubrication schedules, machine setup procedures, maintenance adjustments, and hydraulic system operation. Published by The Heald Machine Company, Worcester, Massachusetts. Essential reference for technicians performing repairs, maintenance, or rebuilding on these precision internal grinding machines. Table of Contents: - INSTALLATION - The Foundation - Clean the Machine - Aligning the Machine - Connect Machine to Line - Attach Coolant Tank - Fill Hydraulic System - LUBRICATION - Table Force Feed Lubrication - Wheelhead Lubrication - Motor Lubrication - Lubrication Instructions - Lubrication Diagrams - SETTING UP THE MACHINE - Functional Diagrams - Attach Work Fixture - Adjust Coolant Attachments - Install Wheelhead and Adjust Drive - Adjust Truing Unit - Set Truing Unit Cam - Trim New Wheel - Set Speeds and Feeds - Set Grinding Stroke - Set Truing Stroke - Set Quick Return and Extreme Outward Table Travel - Set Table Speed for Truing and Finishing - Oven Grind for Straightness - Grind to Finish Size - Set Wheel Truing and Size Control Contacts and Cam - Set Compensation for Wheel Wear and Truing - Set Diameter for Size - Adjust Feed Cams on Cross-slide Hand Wheel - Final Adjustments for Size Control - Standard Grinding Cycle - Set Clutch and Brake Cam and Water Valve Cam on Two Motor Drive Machines - MAINTENANCE ADJUSTMENTS - How the Hydraulic System Operates - Maintenance of the Hydraulic System - Uneven Table Motion - Check Oil in Tank - Check Oil Pump Pressure - Replace Packing on Table Piston Rod - Replace Table Piston Cups - Check Alignment of Piston Rod
Model 2052 ACRACENTER Service Manual
Comprehensive service and repair documentation for the HEALD Model 2052 numerically controlled precision machining center equipped with Acramatic 220 control. This workshop manual covers everything required to install, operate, maintain, and troubleshoot the machine. Installation guidance addresses location, foundation preparation, uncrating, lifting, and all essential connections including hydraulic, electrical, air, and water supply lines. The manual includes detailed lubrication charts with recommended lubricant specifications, a complete functional overview of the Acramatic 220 control console and associated control panels, depth cams, feed control systems, and standard machine controls plus optional accessories. Setup and operating procedures walk through workpiece positioning and clamping techniques, machine startup sequences, axis configuration, tapping operations, and realignment processes. Adjustment sections cover hydraulic pump pressure, pressure relief valve settings, fluid temperature management, table bushing preload, ball screw bearing adjustments, limit switch configuration, dwell timer tuning, and gib alignment. Maintenance procedures address vari-speed belt care, brake service, hydraulic unit flushing, oil filter and strainer cleaning, magnetic filter operation, and cutting fluid tank maintenance. The parts list includes detailed component diagrams, hydraulic schematics, capacity charts, full specifications, and a comprehensive repair parts index for quick reference during service work. Table of Contents: - GENERAL DESCRIPTION - INSTALLATION - Location - Foundation - Uncrating - Lifting - Cleaning - Hydraulic Connections - Electrical Connections - Air Connections - Water Connections - Attach Cutting Fluid Tank (if used) - Shipping Brackets - Leveling - LUBRICATION - General - Lubrication Chart - Recommended Lubricants - FUNCTIONS OF CONTROLS - Acramatic 220 Control Console - Model 2052 CRACENTER Control Panel - Depth Cams and Feed Control - Machine Controls - Optional Controls - GENERAL SAFETY PRECAUTIONS - SETUP AND OPERATING PROCEDURE - Workpiece - Workpiece Location - Workpiece Clamping Considerations - Starting Procedure - Full Range Zero Shift X and Y Axes - Establishing the Part to Program Relationship - Z Axis Setup - Tapping Procedure - Realignment Procedure - Restart the Machine After Overtravel
Model 2253 Programmers Manual Acramatic IV
Programmers manual for the Heald Model 2253 Acracenter machine tool equipped with the Cincinnati Acramatic IV control system. This general edition workshop manual covers essential 3-axis Acramatic IV control programming and operation, including standard features such as absolute positioning input, linear interpolation, 4-digit feed-rate control, and dwell cycles. Optional capabilities are also documented: circular and parabolic interpolation, cutter diameter compensation, tape-controlled spindle speed selection, photoelectric tape reader, and block delete functions. The manual provides comprehensive programming guidance addressing control system architecture, tape format specifications, tape coding standards, and detailed operating mode procedures. Linear interpolation programming is thoroughly explained with practical worked examples for circular and arc generation, supported by nomograph charts for rapid calculation and reference. Table of Contents: - CHAPTER I - INTRODUCTION - CHAPTER II - CONTROL DESCRIPTION - A. ACRAMATIC IV Configuration - B. ACRAMATIC IV Control Description - CHAPTER III - PROGRAMMED INFORMATION - A. General Input Format - 1. Tape Format Description - 2. Format Type - 3. Sequence Number - 4. Preparatory Function - 5. Coordinate Information - 6. Feed Rate - 7. Spindle Command Code - 8. Miscellaneous Function - 9. Plus And Minus Programming - B. Tape Coding - 1. Tab Codes - 2. Code Delete - 3. End of Block - 4. Decimal Point - 5. Tape Parity Failure - 6. Tape Leader - 7. E.I.A. Standard Coding - 8. Recommended Tape Material - CHAPTER IV - OPERATING MODE DETAILED PROGRAMMING DESCRIPTION - A. Linear Interpolation - 1. Description and Programming Example - 2. Applied to Circles and Arcs - 3. Nomographs (N Charts)
Models 271 and 272 Service Manual
Heald Cincinnati Milacron Models 271 and 272 service manual covering chuck-type internal grinding machines in Size-Matic and Gage-Matic configurations. This workshop repair documentation includes installation procedures, detailed operating instructions, wheel head adjustment techniques, coolant system setup and maintenance, dresser unit configuration, grinding stroke settings, and systematic troubleshooting for both models. Also contains fixture operating parameters and parts lists to support ongoing maintenance and repair work on these precision grinding machines. Table of Contents: - Locate Diamond (GAGE-MATIC) - Locate Diamond (SIZE-MATIC) - Wheel Size Switch - Change Wheel - Swivel Wheelhead Cross Slide - HYDRAULIC SYSTEM - Power Unit - Pump - Check Valve - Relief Valve and Oil Pressure - Collet Pressure Regulating Valve - Feed Pressure Regulating Valve - Hydraulic Circuit - Rapid Advance - Rough Speed - Back Off and Sparkout - Dress Speed - Finish Speed - Rapid Return - Uneven Table Motion - Uneven Cross Feed Motion - MAINTENANCE - Lubrication - Motor Lubrication - Wheelhead, Workhead and Idler Lubrication - Table Ways Lubrication - Wheel Guard Mechanism Lubrication - Coolant Tank - Adjust Workhead Brake - Servicing the Table Cylinder - Care of Idle Wheelheads - Servicing the Wheelhead - Inspections - Spare Parts - HYDRAULIC CIRCUIT AND CYCLE CHART - CAPACITY CHARTS - SERVICE REPAIR PARTS INDEX
No. 22 Rotary Surface Grinder Manual
Instruction manual and parts catalog for the Heald No. 22 rotary surface grinder, a belt-driven precision grinding machine. This service manual covers complete operating instructions, adjustment procedures, technical specifications, and a detailed parts list with exploded diagrams and mechanical drawings to support workshop maintenance and repair. Issued as Bulletin 2029-2010 by The Heald Machine Company of Worcester, Massachusetts. An essential reference for anyone operating, troubleshooting, or servicing this classic industrial grinding equipment.
No. 70A and 75A Service Manual - Parts
Service and repair parts manual for Heald No. 70A and No. 75A internal grinding machines, covering the plain bearing workhead with cross-slide type assembly. This document provides detailed technical drawings and dimensional specifications for all workhead components used on these classic Heald grinding machines. Designed as a companion to Bulletin 7089-7006, this manual gives technicians and machine operators the parts information and assembly reference needed for maintenance, troubleshooting, and repair work on the spindle head assembly and related precision components. Table of Contents: - INSTALLATION - The Foundation - Cleaning the Machine - Aligning the Machine - Mounting Countershaft on Belt Drive Machines - Wiring the Machine - Attaching Coolant Tank - LUBRICATION - Wheelhead Lubrication - Motor Lubrication - Lubrication Instructions - No. 70A Internal - No. 75A Internal - Lubrication Diagrams - No. 70A Internal - No. 75A Internal - SETTING UP THE MACHINE - Functional Diagrams - No. 70A Internal - No. 75A Internal - Attach Work Fixture - Install Wheelhead and Adjust Drive - Adjust Coolant Attachments - Set Grinding Stroke - No. 70A Internal - No. 75A Internal - Speeds and Feeds - No. 70A Internal - No. 75A Internal - Attach Truing Unit and Bridge - True New Wheel - Test Grind for Straightness - Grind to Finish Size - Set Diamond for Size - Description of Cross-slide—No. 70A Internal - Make Cross-slide Adjustments—No. 70A Internal - Determine Compensation for Wheel Wear and Trueing—No. 70A Internal - Grind—No. 70A Internal - Grind—No. 75A Internal - MAINTENANCE ADJUSTMENTS - Servicing Wheelheads - Adjust Wheelhead Cross-side Gib - Adjust Wheelhead Belt Tension - Adjust Workhead Spindle Bearings - Adjust Main Table Clutch—No. 70A Internal - GRINDING WHEELS - Table of Correct Sizes - WHEELHEADS - Tables Showing Styles and Sizes Suitable for No. 70A and No. 75A Internal Grinding Machines - SERVICE REPAIR PARTS - Index of Units - Section Drawings of Machine Units