Heald 72A3-72A5 Service Manual
Complete service manual and repair parts documentation for Heald Style No. 72A3-72A5 internal grinding machines, covering Plain, Dial Indicator, and Extended Bridge configurations in both two-motor and three-motor drive versions, plus the No. 72A5 Universal Grinding Machine. This 91-page workshop manual includes everything needed for installation, lubrication schedules, machine setup, available attachments, maintenance adjustments, grinding wheel specifications, and wheelhead assemblies. Detailed service repair parts diagrams, functional schematics, lubrication flow charts, and cross-section drawings of all major machine units provide technicians with the reference material essential for troubleshooting and component replacement. Manufactured by Cincinnati, a recognized builder of precision grinding equipment.
Table of Contents:
- INSTALLATION
- The Foundation
- Clean the Machine
- Aligning the Machine
- Connect the 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
- True New Wheel
- Set Grinding Stroke
- Set Truing Stroke
- Set Quick Return and Extreme Outward Table Travel
- Test Grind for Straightness
- Grind to Finish Size
- Make Cross-slide Adjustments
- Set Diamond for Size
- Determine Compensation for Wheel Wear and Truing
- Set Speeds and Feeds
- Standard Grinding Cycle
- Set Clutch and Brake Cam and Water Valve Cam on Two Motor Drive Machines
- Setting Up No. 72A Dial Indicator Machines
- Setting Up No. 72A5 Universal Machines
- Internal Grinding, External Grinding, Face Grinding
- Setting Up No. 72A5 Extended Bridge Machines
- ATTACHMENTS
- Workhead Cross-slide
- Hand Wheel Table Feed
- Sensitive Cam Facing Attachment
- MAINTENANCE ADJUSTMENTS
- How the Hydraulic System Operates
- Maintenance of the Hydraulic System
- Uneven Table Motion
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Document Details
- Format
- Pages
- 91
- Size
- 13.9 MB
- Category
- Machine Tools