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Speed Changer, Industrial High-Speed Drive and Gear Manufacturing

NAICS 333612 · Machinery Manufacturing6 · SBA size standard: 750 employees

Manufacturers produce custom and standard speed reducers, increasers, gearboxes and high-speed drives to exact customer specifications. For a shop that receives engineered drawings for industrial gear sets and assembles precision units for OEMs and aftermarket replacement, the specialists turn RFQ messages into priced proposals, drawings into manufacturing routings and bills of material, routings into machine schedules and purchase orders for raw stock and components, and finished units into inspection records, certifications and shipments. Tolerances, heat treatment, balancing and material certifications stay with the machinist and engineer.

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What makes this business different

  • Custom engineered drawings with precise tolerances, materials, hardness and balancing requirements that must be followed exactly
  • Long-lead-time raw materials and subcontracted processes such as heat treating, gear cutting and surface finishing
  • Machine capacity and tooling constraints that determine feasible production dates
  • Traceability of each gear set or gearbox to its raw material heat numbers and inspection records
  • Assembly, run-testing, vibration analysis and final inspection before shipment
  • Export documentation, material certifications and customer-specific quality packets
  • Repeat OEM customers who reorder the same part numbers on blanket purchase orders

Specialist bots

  • a machinist at a desk examining a large technical drawing spread across a light table with calipers and a notebook nearby

    Quote Engineer

    Convert incoming RFQs and drawings into accurate priced proposals with lead times.

    Works in: Ambitious Docs, Ambitious Sheets, Contract Analyzer · Workflows: Quote and order intake

    Automates

    • Reads incoming emails and attached drawings
    • Extracts part numbers, quantities, materials and tolerances
    • Compares to historical pricing and routings
    • Drafts proposal with exceptions and delivery date
    • Creates the released order task

    Stops for a person

    • The engineer reviews all new or complex geometries
    • Pricing and lead-time commitments are approved before sending
    • Exceptions to customer drawings are confirmed by the owner
  • a technician standing at a workstation reviewing a gear tooth profile printout taped to a CNC gear hobber control panel

    Process and Routing Planner

    Create detailed manufacturing routings, bills of material and inspection points from engineering drawings.

    Works in: Ambitious Docs, Ambitious Sheets, Process Optimizer · Workflows: Routing and bill-of-material creation

    Automates

    • Generates operation sequences and machine assignments
    • Builds the bill of material from the drawing
    • Calculates estimated cycle and lead times
    • Attaches required inspection and test specifications

    Stops for a person

    • The lead machinist or engineer approves the routing before release
    • Any changes to proven processes are reviewed
  • a worker in a shop apron checking alloy steel bar stock markings against an open purchase order on a clipboard in the receiving area

    Materials and Purchasing Coordinator

    Generate purchase requisitions for raw material, components and subcontract services while maintaining traceability.

    Works in: Ambitious Sheets, Ambitious Tasks, Ambitious Docs · Workflows: Material and component purchasing

    Automates

    • Calculates net requirements from BOM and current stock
    • Drafts purchase requisitions grouped by supplier
    • Tracks incoming certifications and heat numbers
    • Maintains minimum stock levels for hardware

    Stops for a person

    • The owner approves and places every purchase order
    • Material substitutions are reviewed by engineering
  • a supervisor updating a large wall-mounted scheduling board filled with job cards next to CNC lathes and mills

    Production Scheduler

    Create and maintain machine schedules that respect capacity, tooling and outside processing constraints.

    Works in: Ambitious Sheets, Process Optimizer · Workflows: Machine scheduling and capacity planning

    Automates

    • Loads orders onto work centers by due date and cycle time
    • Highlights capacity conflicts and bottlenecks
    • Suggests alternate routings or overtime
    • Adjusts for supplier or heat-treat delays

    Stops for a person

    • The shop supervisor approves the weekly schedule
    • Rush orders are scheduled only after owner review
  • a machinist in a shop apron reading a job traveler attached to a metal part on the table of a large CNC lathe

    Shop Floor Coordinator

    Release work packets to machinists, capture production data and move jobs to the next operation.

    Works in: Ambitious Tasks, Ambitious Docs, Ambitious Sheets · Workflows: Shop floor production execution

    Automates

    • Generates and releases traveler packets with drawings and tooling lists
    • Logs setup times, run times and scrap quantities
    • Captures in-process inspection data at flagged points
    • Routes completed operations to next work center or subcontract

    Stops for a person

    • The machinist performs first-piece inspection and approves the run
    • Any deviation requires engineering review and sign-off before continuation
  • a technician using a dial indicator to check runout on a large precision gear mounted on a test stand in a well-lit inspection room

    Quality Inspector

    Compile final inspection results, test data and documentation packets for each completed gearbox or gear set.

    Works in: Ambitious Docs, Ambitious Sheets, Ambitious Tasks · Workflows: Final inspection and testing, Shipping, documentation and invoicing

    Automates

    • Generates feature-by-feature inspection checklists
    • Organizes material certs, hardness and balance reports
    • Drafts certificate of conformance and data packets
    • Prepares shipping and invoice documentation

    Stops for a person

    • The inspector personally verifies critical dimensions
    • All quality packets are reviewed and signed by the owner before shipment
    • Any non-conformance is dispositioned by engineering

Workflows

Quote and order intake

Starts when: A customer sends an RFQ, drawing or purchase order by email or portal

  1. Extract part numbers, quantities, due dates and all drawing revisions
  2. Check against existing part files and manufacturing capabilities
  3. Draft a priced proposal with lead time and exceptions
  4. Record customer approval and convert to a released manufacturing order
  5. Create a master task with linked drawings and specifications

Watch for: Tolerances and material callouts must be captured exactly as drawn; Exceptions to print must be flagged and approved before release

Routing and bill-of-material creation

Starts when: New or revised manufacturing order is released

  1. Explode the drawing into operations, machines, tooling and setup times
  2. Generate a detailed bill of material for raw stock, purchased components and subcontracted services
  3. Calculate cycle times and total lead time including queue and outside processing
  4. Flag critical dimensions and inspection points
  5. Attach heat-treat, balancing and finishing specifications

Watch for: Gear geometry and tooth profiles require specialized machining sequences; Subcontracted processes must be sequenced correctly in the routing

Material and component purchasing

Starts when: After routing and BOM are approved and weekly

  1. Subtract current inventory and on-order quantities from BOM requirements
  2. Draft purchase requisitions for bar stock, forgings, bearings and subcontract services
  3. Track supplier lead times against the required start dates
  4. Maintain minimum stock levels for common fasteners and hardware
  5. Record incoming material certifications and heat numbers

Watch for: Special alloy steels and large-diameter bar have long mill lead times; All incoming material must be traceable to its mill certificate

Machine scheduling and capacity planning

Starts when: Weekly and when new orders arrive

  1. Load approved orders onto specific machines and work centers using the construction scheduler
  2. Balance setup and run times across lathes, mills, gear cutters and grinders
  3. Identify bottlenecks and suggest alternate routings or overtime
  4. Reserve time for inspection and assembly
  5. Adjust schedule for supplier delays or rush orders

Watch for: CNC gear grinders and hobbers are limited resources with long setup times; Heat-treat furnace batches affect multiple orders

Shop floor production execution

Starts when: Scheduled operation becomes due

  1. Release traveler, drawings and tooling list to the machinist
  2. Capture setup and run times, scrap and rework
  3. Record in-process inspection results at critical dimensions
  4. Move completed operation to next step or outside process
  5. Flag any deviations for engineering review

Watch for: First-piece inspection is mandatory before production run; Any out-of-tolerance condition stops the job until engineering disposition

Final inspection and testing

Starts when: Unit reaches final assembly and test

  1. Generate inspection checklist from drawing critical features
  2. Record dimensional, hardness, vibration and runout results
  3. Compile material certifications, heat-treat records and balance reports
  4. Draft customer quality data packet
  5. Release for packaging and shipping once all checks are complete

Watch for: Gear mesh and backlash testing must meet customer specifications; Traceability records must accompany every shipped unit

Shipping, documentation and invoicing

Starts when: Inspection is approved

  1. Prepare packing list, commercial invoice and certificate of conformance
  2. Draft shipment notification and tracking information
  3. Create and send final invoice with supporting quality documents
  4. Close the manufacturing order and update inventory
  5. Capture customer feedback or non-conformance reports

Watch for: Heavy gearboxes require special crating and rigging instructions; Export orders need additional end-use and destination documentation

Bot templates for this industry

Source: U.S. Small Business Administration, Office of Size Standards, Table of Small Business Size Standards Matched to North American Industry Classification System Codes, version March 2023 (effective 2023-03-17, NAICS 2022). Size standards are shown for reference only.