COVEL - Service Manuals
2 manuals available for download
COVEL is a respected manufacturer of precision surface grinding equipment, recognized for robust industrial machine tools built to exacting standards. Our technical documentation collection includes detailed service manuals, repair guides, and workshop materials that support operators and technicians in maintaining peak equipment performance. Whether you need a comprehensive user manual, troubleshooting guide, or parts list for your COVEL grinder, our PDF downloads provide the essential technical information required for proper maintenance and repair procedures. Access authentic COVEL documentation to ensure your machinery operates reliably and efficiently.
Covel No. 17 and 17H Surface Grinders Manual
Bulletin 179 service manual for Covel precision surface grinders, models No. 17 (hand feed) and No. 17H (hydraulic feed). These 10" × 16" grinding capacity machines are industrial-grade toolroom equipment manufactured by Covel Manufacturing Co. of Benton Harbor, Michigan, since 1874. The manual covers setup, operation, and maintenance of key precision components: the elevating hand wheel, hard chrome table ways, timing belt drive system, precision ball-bearing spindle assembly, and hardened ground lead screws for exact depth control. Essential technical reference for operators and maintenance technicians. Table of Contents: - INTRODUCTION - Purpose of Manual - General Information - DESCRIPTION - General - Assembly and Construction - Flow Control and Relief Valve - Application - PRINCIPLES OF OPERATION - Pumping Cartridge - Hydraulic Balance - Pressure Plate - Flow Control and Relief Valve - INSTALLATION AND OPERATING INSTRUCTIONS - Installation Drawings - Drive Connections - Shaft Rotation - Piping and Tubing - Hydraulic Fluid Recommendations - Overload Protection - Port Positions - Start-Up - SERVICE INSPECTION AND MAINTENANCE - Service Tools - Inspection - Adding Fluid To The System - Adjustments - Lubrication - Replacement Parts - Trouble-Shooting - OVERHAUL - General - Disassembly - Inspection and Repair - Reassembly - TESTING
Covel No. 20 and 35 Surface Grinder Service Manual
Service manual for the Covel No. 20 and No. 35 precision surface grinders, essential documentation for technicians and operators maintaining these heavy-duty grinding machines. The manual provides detailed front, side, and rear views illustrating dust protection design, cooling vents, and robust construction throughout the machine frame. Documentation covers the sealed-for-life ball bearing spindle assembly, spindle motor mounting configurations, and the complete hydraulic system layout including closed circuit design with sealed tank and pump unit. The grinding wheel guard features a swivel mount for accessibility, while vertical ways cast integral with the base incorporate hand-scraped finishing and precision alignment with saddle ways for consistent accuracy. Telescoping guards protect vertical ways from dust ingress, and oil-tight, dust-tight push buttons ensure reliable electrical control operation in grinding shop environments. Table feed functionality includes both hand operation and power feed with interlock safety, adjustable table dogs for positioning, and speed control for optimal feed rates. The No. 35 model mounts a 12-inch grinding wheel driven by a 2 H.P. motor, while the No. 20 model uses a 10-inch wheel with 1.5 H.P. motor. All castings undergo semi-hard rough machining, normalization, and finish work for dimensional stability and long service life. Covel has manufactured precision grinding machines since 1874, bringing decades of engineering expertise to this workshop and repair manual resource.