Randolph Manufacturing Corp. - Secondary Services
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Secondary Services


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Screw Machine Product 3

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Randolph Manufacturing offers a variety of value-added services such as; grinding, polishing, centerless grinding, cold heading and heat treating. As well as employing inventory control services Kanban and JIT (Just-In-Time) production techniques. We as a contract manufacturer make parts according to strict customer specifications. We can handle both large and small volume production orders with high accuracy.

  • Cold-heading
    		•
  • Heat-treating
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  • Rack & Barrel Plating
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  • 100% Inspection
    		•
  • Polishing
    		•
  • Rust prevention
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  • Passivation
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  • Brightening
    		•
  • Tumbling
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  • Thread-locking
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  • Plating
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  • Centerless Grinding
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  • Assembly
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  • Deburring
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    Capabilities · Facility List

    Capabilities

    Materials

    		Screw-machine grade:
      Carbon/Cold-rolled/Ledloy (C12L14, C1215, C1144 stressproof),
      Stainless Steel (303, 304L, 416A, 420F, 430F);
      Special alloys (4130, 4140, Kovar, Inconel, Nickel-200)
      Brass/ Copper (C360, C145, C544)
      Aluminum (2011, 2024, 6061)
      Please contact us to discuss your DFARS or ROHS compliant requirement.
    Other:
      12L14 Steel
      C 1070 Steel
      Exotics
      Teflon
      Delrin
      Nylon Q 200 (polystyrene)

    Grinding

  • Hard/ soft/ complex metals cut easily
  • Flat tolerances are achieved
  • Effective removal of excessive material
  • Very fine finishes
  • Light cuts
  • High precision cutting

    • Deburring

  • Rapid finishing
  • Close tolerances
  • Uniform deburring
  • Short process cycles
  • Safe process without any damage to part
  • Improved surface finish

    • Polishing

  • Super finishing
  • De-scaling
  • Degreasing
  • Corrosion resistance

    		•

    Facility List

    Tool Room Equipment

    		(1) Agitron EDM Machine
    (1) Atlas Bench Lathe
    (1) Grob Bandsaw
    (1) Power Hacksaw
    (1) Royal Oak Grinding Machine
    (1) Tool Room Hadinge Lathe
    (2) Bridgeport Vertical Milling Machines
    (2) Harig Fixtures
    (3) 15" Drill Presses
    (7) 8 X 10 Boyer-Schultz and Haring Surface Grinders Equipped to Process Carbide Cutting Tools

    Production & Processing Equipment

    		(1) 1" Traub CNC Production Machine
    (1) Baron-Blakeslee Vapor Degreaser
    (1) Brown & Sharpe and Lipe Feed
    (1) Emco Maier 425 CNC Production Machine
    (1) Fourway Parts Cleaner
    (1) Harper Centrifugal Tumbling Barrel
    (1) Kent-Owens Vertical Milling Machine
    (2) Greenlees
    (3) Empire Blast Finishing Machines
    (37) Davenport 5 Spindle Automatic Screw Machines with 3/4 Oversize Spindle 1960-980 Vintage
    (4) Centrifugal Oil Seperators

    Other

    		Gas and Electric Welding Equipment
    Assorted Indicators, Jo-Blocks, and Other Tooling Available

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