BARBER-COLMAN - Service Manuals
9 manuals available for download
Barber-Colman is a trusted manufacturer of precision machine tools, with a comprehensive catalog of technical documentation spanning operator's manuals, service manuals, and repair guides. Whether you need a detailed workshop manual for routine maintenance, a troubleshooting guide to resolve operational issues, or a parts list to identify components, our collection of PDF downloads provides the authoritative resources required for successful equipment operation and upkeep. From hobbing machines to hydraulic systems and control units, Barber-Colman documentation ensures technicians and operators have instant access to the owner's manuals and user guides necessary for reliable performance and efficient maintenance workflows.

Barber-Colman No. 3 & No. 12 Hobbing Operator's Manual
Third Edition operator's manual for the Barber-Colman No. 3 and No. 12 gear hobbing machines. This workshop manual provides comprehensive guidance on proper operation, maintenance, and adjustment of these heavy-duty hobbers. Coverage includes general specifications, care and adjustment procedures, and detailed operating instructions: gear changing, hob and hob swivel positioning, work and work arbor setup, and inspection protocols. Dedicated sections address hobbing helical and spur gears, roughing and finishing techniques, hob sharpening, cutting oil and compound selection, and hobbing procedures. The manual includes practical reference data—feed and speed tables, gear tooth specifications for diametral pitch gears, change gear tables for spur gear hobbing, and feed constant data—plus complete repair parts lists and foundation plans for both models. Machine footprint: 43" × 76"; net weight approximately 4,600 lbs. An essential troubleshooting and maintenance resource for operators and shops.

Barber-Colman No. 4-4 Hob Sharpening Machine Operator's Manual
Operator's manual for the Barber-Colman No. 4-4 Hob Sharpening Machine. This comprehensive workshop reference covers setup procedures, daily operating instructions, machine configuration, operational sequences, and best practices for maintaining consistent hob sharpening performance. Published by Barber-Colman Company, Rockford, Illinois.

Model 472P Capacitrol Installation Manual
Installation and wiring manual for the Barber-Colman Model 472P Capacitrol temperature control instrument. This workshop guide covers rigid and vibration-isolated mounting configurations (surface and flush), power supply connections for 240V 50/60 cycle operation with alternative pin assignments for 208V and 120V service, control relay wiring, and thermocouple/sensing element connections. Includes mounting dimensions, operating temperature range (40°F to 150°F), handling precautions, and external wiring diagrams for diverse temperature control applications. Essential reference for technicians installing and commissioning this precision temperature controller.

Models 281L and 281R Limitrols Instruction Manual
Instruction manual for Barber-Colman Models 281L and 281R Limitrols, pneumatic limit switches designed for HVAC and building automation systems. This service manual documents installation, operation, and maintenance of these industrial control instruments, which saw widespread use in commercial and industrial climate control applications. A technical notice details the replacement of the original adjusting knob with an FM-approved screwdriver adjustment method, secured by an acorn nut. Published December 1966, this workshop reference equips technicians with field procedures for installation, calibration, and troubleshooting of legacy Barber-Colman equipment—essential for building maintenance crews and HVAC service professionals.

No. 12 Hobbing Machine Parts List
Complete parts list and repair documentation for the Barber-Colman No. 12 Hobbing Machine, issued October 12, 1939. This workshop manual provides sectional drawings of all principal machine elements with corresponding part numbers and component names needed for ordering replacement parts. Includes indexing charts and serial-number reference instructions to identify specific parts by the identification stamp on the work slide upright. Essential reference for technicians servicing or maintaining this industrial gear-cutting equipment.

No. 16-16 Gear Hobbing Machine Parts List
Comprehensive parts list for the Barber-Colman No. 16-16 gear hobbing machine (earlier designation Type A), covering all serial numbers up to No. 2603. This manual identifies every replacement part needed for maintenance and service of this industrial gear-cutting equipment. Published by Barber-Colman Company, Rockford, Illinois. An essential reference for workshop technicians and machine operators performing parts replacement and troubleshooting on these precision machines.

No. 6-10 Gear Hobbing Machine Operator's Manual
Operator's manual for the Barber-Colman No. 6-10 gear hobbing machine, formerly designated No. 3 Hobbing Machine. Second edition. This workshop manual covers complete operating procedures, maintenance protocols, and service documentation for both precision and standard hobbing machine operation. Essential reference for machinists and production engineers working with gear hobbing equipment. Table of Contents: - SPECIFICATIONS AND DESCRIPTION - CHAPTER I - CARE AND ADJUSTMENT OF MACHINE - Installation - Lubrication - Adjustments - Lubrication Chart - CHAPTER II - OPERATION OF MACHINE - Work and Work Arbors - Hobbing Helical Gears - Hobbing Worm Gears - Hobbing Spline Shafts - Roughing and Finishing - Use and Care of Hobs - Hob Sharpening Machine - Cutting Oils and Compounds - Hobbing Accurate Gears - CHAPTER III - WORK HOLDING EQUIPMENT - CHAPTER IV - ESTIMATING PRODUCTION - Selecting Feeds and Speeds - CHAPTER V - USE OF GEAR TABLES AND FORMULAS - Table 1—Gear Tooth Parts (Diametral Pitch) - Table 2—Gear Tooth Parts (Circular Pitch) - Tables 11-14—Change Gears for Hobbing Spur Gears - Surface Speeds - Feed Constants - Approximate Value of "C"

Type A Gear Hobbing Machine Operator's Handbook
Third Edition operator's handbook for the Barber-Colman Type A Gear Hobbing Machine, published by Barber-Colman Company of Rockford, Illinois. This service manual provides complete technical documentation for operating and maintaining the Type A hobbing machine, covering operational procedures, machine specifications, and setup instructions essential for precision gear cutting work. A comprehensive reference for operators and maintenance technicians working with this industrial hobbing equipment. Table of Contents: - DESCRIPTION AND SPECIFICATIONS - CHAPTER I - CARE AND ADJUSTMENT OF MACHINE - Installation - Motor Drive - Change Gear Lubrication - Starting Machine - ADJUSTMENTS - LUBRICATION CHART - CHAPTER II - OPERATION OF MACHINE - Work and Work Arbors - Hobbing Helical Gears - Hobbing Worm Gears - Hobbing Spline Shafts - Roughing and Finishing - Use and Care of Hobs - Hob Sharpening Machine - Cutting Oils and Compounds - Hobbing Accurate Gears - CHAPTER III - WORK HOLDING EQUIPMENT - CHAPTER IV - ESTIMATING PRODUCTION - Selecting Feeds and Speeds - CHAPTER V - USE OF GEAR TABLES AND FORMULAS - Table 1—Gear Tooth Parts (Diametral Pitch) - Table 2—Gear Tooth Parts (Circular Pitch) - Table 3-10—Change Gears for Hobbing Spur Gears - Hob Surface Speeds - Feed Constants - Approximate Values of "C"

Type D Hydraulic Hobbing Machine Parts List
Comprehensive parts list for Barber-Colman Type D hydraulic hobbing machine covering serial numbers 1 through 683. This repair manual and technical documentation resource delivers detailed sectional views and engineering drawings of all major machine assemblies: feed box, control panel, clutch and drive gear train, main valve housing, hob swivel slide, primary drive box, differential gear box, work spindle assembly, work slide carriage, hydraulic pump unit, and hydraulic motor. Also includes ordering procedures, complete index, hydraulic circuit schematics, and electrical control diagrams to support maintenance, troubleshooting, and parts identification for workshop and service technicians.