FELLOWS - Service Manuals
15 manuals available for download
FELLOWS is a precision machine tools manufacturer with a comprehensive legacy in gear shaping and measuring instrument technology. Our extensive collection of original service manuals, repair guides, and technical documentation—including operator's handbooks, parts lists, and troubleshooting guides—provides essential support for maintenance, workshop operations, and equipment restoration. Available as convenient PDF downloads, these detailed resources cover everything from routine maintenance procedures to in-depth repair instructions, helping professionals and technicians maximize equipment performance and minimize downtime across a range of specialized industrial applications.
12M & 24M Involute Measuring Instruments Manual
Complete instruction manual for the Fellows 12M and 24M involute measuring instruments, precision inspection equipment used for gear quality control and involute profile verification. This service manual covers both manual operation and integrated General Electric recorder systems for automated data logging. Includes packing specifications, unpacking and assembly procedures, mechanical system overview, checking and adjustment protocols for both the 12M and 24M models, and setup and operation guidelines. Applicable to specified serial number ranges for both configurations. Essential reference for technicians performing maintenance, calibration, and troubleshooting on involute measuring equipment.
12M, 18M, 24M Involute Measuring Instruments Parts List
Parts list for Fellows Gear Shaper Company involute measuring instruments, models 12M, 18M, and 24M. This technical documentation provides a comprehensive parts catalog covering castings, steel components, and other precision parts with full part numbers and component designations. Includes sections on the integrated electrical recorder unit. Essential reference for technicians performing maintenance, repair, or parts ordering on these classic involute measurement machines. Original publication 1952.
3-Inch Fine-Pitch Gear Shaper Instruction Manual
Comprehensive instruction manual for the Fellows 3-Inch Fine-Pitch Gear Shaper, a precision machine tool engineered to produce accurate fine-pitch spur and helical gears with pitch diameter up to 3 inches and face width up to 3/4 inch. This workshop manual documents the cutter-spindle driving mechanism capable of up to 2000 strokes per minute, the relieving mechanism, and optional magazine feed and automatic work ejector systems designed for sustained production runs. The documentation includes detailed operating instructions, systematic care and maintenance procedures, and essential general information for toolroom technicians and manufacturing operations. The machine found wide application in the precision manufacture of dial indicators, motion picture cameras, clocks, and recording instruments where gear accuracy and repeatability were critical.
3-Inch Fine-Pitch Gear Shaper Parts List
Parts list for the 3-Inch Fine-Pitch Gear Shaper manufactured by Fellows Gear Shaper Company. This comprehensive parts manual includes 23 detailed plates with indexed components, assembly diagrams, and specification references for every major assembly. The documentation covers the cutter-spindle guide mechanism, saddle and cutter reciprocating mechanisms, chip guard assembly, worm and worm wheel assemblies, arbor support, the lubricating system, and automatic cam reduction unit. Serial number 28810 references a lubricating system revision. Original printing March 1953. Essential reference for identifying replacement parts, understanding assembly relationships, and sourcing components for restoration or repair of this precision gear-shaping machine.
6A-Type Gear Shapers Parts List
Complete parts list for Fellows 6A-Type Gear Shapers manufactured by The Fellows Gear Shaper Company. This indexed parts reference covers all major assemblies including work spindle configurations, apron feed mechanisms, worm boxes, feed gear systems, upper worm and wheel drives, saddle assemblies, cutter slide and spindle details, crankshaft components, timing mechanisms, depth feed systems, clutch and main drive shaft arrangements, stroke gear boxes, and oiling systems. Also includes specialized components for 615A and 612A hollow cutter spindle variants. Originally revised March 1957, printed 1959. Essential reference for identifying and sourcing replacement parts, performing maintenance, or executing repairs on these precision gear shaping machines.
7 and 7A Type High-Speed Gear Shapers Parts List
Parts list for Fellows 7 and 7A-Type high-speed gear shapers. This comprehensive parts documentation includes casting specifications, a complete parts list with part numbers and component names, and schematic diagrams illustrating the drive gear arrangements, feed gears, and work change gears essential for maintenance and repair. Covers all machine variants designated as No. 7, 71, 72, 712, 75, 725, 7125, and their foreign shipment equivalents 70, 710, 720, 7120. An indispensable reference for workshop technicians servicing these industrial gear-shaping machines.
8M and 20M Red Liners Parts List
Parts list for the Fellows 8M and 20M Red Liners gear shaping machines, covering mechanical assemblies and service components for these precision industrial tools. The manual indexes nine detailed plates documenting the crankshaft and motor assembly, drive gear train configuration, pointer arm mechanism, indicator arm mechanism, master gear carrier mechanism, backlash measuring device, paper feed mechanism, turret assembly, and center locating support. Original revision dated July 1952, reprinted 1965. This is an essential reference for maintenance, troubleshooting, and parts identification on these classic Fellows gear shapers.
Fellows 10-2 Gear Shaper Instruction Manual
Complete workshop manual for the Fellows 10-2 Gear Shaper, essential for operators and technicians performing setup, operation, and maintenance of this precision machine tool. Detailed preparation instructions cover machine assembly, hydraulic system commissioning, coolant and lubrication specifications, and break-in protocols to ensure optimal performance. Comprehensive setup guidance addresses drive belt installation, gear train configuration, guide alignment, stroke length calibration, fixture mounting, cutter offset positioning, spindle rotation direction, coolant selection, work slide adjustment, and internal/external parameter tuning. Cutting procedures section explains cycle execution, speed and feed rate selection, depth of cut measurement using precision micrometers, and cycle monitoring. Electrical system chapter provides safety overview, proximity switch operation, and control panel functionality. Dedicated section on optional attachments including infinitely variable stroke control, motorized feed systems, multi-cut capability, automatic speed changing, feed reversal mechanisms, cutter positioning devices, and hydraulic fixture clamping. Includes servovalve operation instructions and metric conversion reference tables. Professional service reference manual suitable for workshop technicians and authorized maintenance personnel.
Gear Shaper Spur and Helical Operator's Handbook
Operator's handbook for Fellows Spur and Helical Gear Shapers — a comprehensive manual covering setup and operation of spur and helical gear shaping equipment. Details roughing and finishing cutting procedures, routine care and maintenance protocols for gear shapers, workpiece supporting and clamping methods, selection and application of cutting oils and cooling compounds, gear inspection techniques, and tooth profile calculation fundamentals. Published by The Fellows Gear Shaper Company, Springfield, Vermont. An essential reference for machine operators and maintenance technicians working with Fellows gear shaper equipment.
No. 24H Lead Measuring Instrument Parts List
Parts list and index for the Fellows No. 24H Lead Measuring Instrument, a precision gear measurement tool from the Fellows Gear Shaper Company. This parts manual includes a front view photograph and a comprehensive indexed breakdown across 12 detailed plates, each covering a distinct assembly: work spindle, counterbalance weight, tailstock, tape clamping unit, handwheel shaft, ratio bar shaft, recording mechanism, front slide assembly, setting mechanisms, gage head, and tape disks. The document also provides replacement parts information for Cleveland and G.E. electric recorders integrated with the instrument, plus complete ball and roller bearing specifications. Published in 1959, this service documentation is essential for technicians maintaining or restoring these precision measuring instruments and serves as an indispensable workshop reference for parts identification.
No. 36 Fellows Gear Shaper Parts List
Parts list for the Fellows No. 36 Gear Shaper, a precision machine tool manufactured by The Fellows Gear Shaper Company in Springfield, Vermont. This comprehensive service parts catalog contains a detailed plate index covering 26 plates that break down the complete assembly and component structure of the machine. The documentation includes exploded views and part identification for the work spindle apron block, apron support assembly, depth feed mechanism, saddle assembly, back-off shock absorber, lower and upper worm boxes, rapid rotation assembly, C shaft assembly, apron linkage, stroke chain housing, rack arm and stroke mechanism, stroke shift mechanism, back-off and crankshaft components, stroke gear box, stroke transmission system, apron relieving mechanism, timer assembly, vertical feed shaft, feed transmission, motor drive, coolant linkage assembly, and front and rear machine views. An essential reference for technicians and operators performing maintenance, repair, and restoration on this classic gear shaping machine. Copyright 1967. Table of Contents: - Work Spindle Apron Block Assembly - Apron Support Assembly - Depth Feed - Saddle Assembly - Back Off Shock Absorber - Lower Worm Box - Rapid Rotation Assembly - C Shaft Assembly - Apron Linkage Assembly - Stroke Chain Housing - Rack Arm and Stroke Mechanism - Stroke Shift Mechanism - Back Off and Crank Shaft - Stroke Gear Box - Stroke Transmission - Saddle Assembly - Apron Relieving Mechanism - Timer Assembly - Vertical Feed Shaft - Upper Worm Box - Feed Transmission - Motor Drive - Depth Feed - Coolant Linkage Assembly - Machine View from Left Front - Machine View from Right Rear
No. 36-Type Gear Shaper Parts List
Complete parts list and reference manual for the Fellows No. 36-Type Gear Shaper, an essential workshop resource for maintenance, repair, and parts identification. The document indexes 22 detailed plates systematically covering all major assemblies: cutter-spindle, upper bevel gear bracket, lead screw, work-support, stroke mechanisms, depth-feed system, work-spindle, apron relieving, change gears, drive shafts, lubrication system, and rapid rotation mechanism. Includes precise diagrams and serial number cross-references to help technicians locate the correct parts for their specific machine variant, with coverage of serial number groups 28001, 28006, 28923, 29165, 29163, 28935, 28934, 28924, 28780, 31116, 31120, and 31321. Invaluable for anyone performing routine maintenance, troubleshooting assembly issues, or sourcing replacement components for this classic gear shaper. Table of Contents: - Front View 36-Type Gear Shaper - Right Hand End View - Rear View - Left Hand End View - Parts List - Ball Bearing Specifications - Washer and Roller Bearing Specifications - Extra Parts for Raised Machines - Plate 1. Cutter-spindle and Upper Bevel Gear Bracket - Plate 2. Lead Screw, Rock-shaft and Saddle Gib - Plate 3. Work-support for Full Stroke. Cutter Set-ups - Plate 4. Upper worm and Stroke Shift Mechanism - Plate 5. Rack Yoke and Depth-feed - Plate 6. Rack Yoke, Rack Screw and Stroke Dial - Plate 7. Crank Arm and Stroke Change Mechanism - Plate 8. Stroke Transmission - Plate 9. Stroke Shift Mechanism - Plate 10. Depth-feed - Plate 11. Depth-feed Part Sections - Plate 12. Work-spindle--Front View - Plate 13. Work-spindle--Side View - Plate 14. Apron Relieving Mechanism and Back-off Shaft - Plate 15. Linkage for Moving Apron Out of Four Point Bearing - Plate 16. Change Gears, Work-spindle Timer and Compound Pump - Plate 16A. Change Gears, Work-spindle Timer and Compound Pump - Plate 17. Vertical Feed Shaft and Feed Gears - Plate 18. Main Drive Shaft, Feed Drive and Lubricating Oil Pump - Plate 18A. Main Drive Shaft, Feed Drive and Lubricating Oil Pump - Plate 19. Work-spindle Timer - Plate 20. Saddle Back-off and Shock Absorber - Plate 21. Diagram of Lubricating System - Plate 22. Work-spindle Rapid Rotation Mechanism--Front to Rear - Plate 18B. Lubricator Pump, for Serial Nos. 31116, 31120 and all serial numbers above 31321.
No. 6-Type Gear Shaper Parts List
Parts list for the Fellows No. 6-Type Gear Shaper, a precision industrial machine tool for gear manufacturing and shaping operations. Original cover and title pages dated 1924; this Second Edition–Second Printing was issued in 1933 by The Fellows Gear Shaper Co., Springfield, Vermont, U.S.A. This technical parts documentation provides detailed component identification and assembly references essential for maintenance, repair, and replacement work on this classic gear shaper. Ideal for machinists, toolroom technicians, and equipment restorers seeking authentic original manufacturer specifications and part nomenclature for the No. 6-Type model.
NO.12M Involute Measuring Instrument Parts List
Comprehensive parts list for the Fellows NO.12M Involute Measuring Instrument, an essential reference for technicians maintaining or servicing this precision measurement equipment. The document provides a detailed plate index organizing 16 assemblies: base structure, drive slide, work spindle, angular rotation stop shaft, base radius setting device, tailstock assembly, electrical dial indicator, main slide, pointer slide, electrical cabinet, recorder and paper drive mechanism, optical base radius setting assembly, internal pointer and master gage, and calibrating arbor. This parts catalog applies to all NO.12M instruments manufactured above Serial number 32695, making it indispensable for ordering replacement components, conducting repairs, or performing routine maintenance. Ideal for service technicians, repair shops, and equipment operators who need accurate component identification and sourcing information.
Parts List for Fellows Gear Shapers 48-8/12
Complete parts list with plate index for Fellows Gear Shapers models 48-8, 48-12, 48-Z-8, and 48-Z-12. This comprehensive manual includes 27 plates featuring exploded view drawings essential for identifying and locating every component. Coverage spans work spindle apron block assembly, apron support assembly, depth feed mechanisms, saddle assembly, back off shock absorber, lower worm box, rapid rotation assembly, C shaft assembly, apron linkage assembly, stroke chain housing, rack and stroke mechanism, stroke shift mechanism, back off and crank shaft, outboard crank shaft, stroke gear box, stroke transmission, apron relieving mechanism, vertical feed shaft, offset vertical feed shaft, upper worm box, feed transmission, motor drive, coolant and counter assemblies, and complete machine views. An indispensable reference for anyone servicing or rebuilding these industrial gear shaping machines, whether performing routine maintenance or major overhauls.