TG-6x36 and 12x45 Thread Grinder Operating Manual

Operating and maintenance manual for Jones & Lamson TG-6x36 and TG-12x45 automatic thread grinding machines. This comprehensive workshop manual covers everything required to install, set up, and operate these precision grinding systems: detailed lubrication schedules, routine maintenance procedures, and general operating principles. The guide includes extensive technical information on grinding wheel selection and dressing, diamond tool use, coolant management, and specialized grinding techniques for multiple-start threads and taper threads. Thread inspection methods and quality control procedures are explained alongside setup techniques, cycle charts, and work speed reference tables. Change gear tables help operators configure the machines for different thread pitches. The manual provides assembly drawings for standard grinding wheel components and complete electrical instructions for safe machine operation. Multiple trueing devices are covered in depth: universal, pantograph, 60-degree, multiform, and NX-700 models, with detailed instructions for each. Additional sections address relieving attachments, interrupting thread and hob grinding accessories, and internal thread grinding capability. Practical reference tables and cycle data make this an essential service manual for technicians and operators responsible for these machines.