Production of Metal Shafts

Production Process

ESSENTIAL FEATURES

Four essential features that should be checked are: material hardness, chamfer, surface finish, and tolerance.

  1. SHAFT HARDNESS:
  2. Minimum hardness for Carbon Steel, Alloy Steel and Stainless Steel should be Rockwell C30.

  3. SHAFT CHAMFER:
  4. A lead-in angle on the shaft ensures against damage while the seal is being installed. The diagram below shows recommended shaft chamfer.

    Shaft Dia. (inch) Chamfer (inch)
    Up to 0.0001 0.045
    1.001 to 2.000 0.070
    2.001 to 3.000 0.080
    3.001 to 4.000 0.093
    4.001 to 5.000 0.110
    5.001 to 6.000 0.130
  5. SHAFT TOLERANCE:
  6. Shaft tolerances for different shaft sizes are listed in the table below. Other design considerations often require tighter tolerances (such as bearing-fit tolerances) than those shown below.

    Diameter (inch) Tolerance (inch)
    Up to 4.000 0.003
    4.001 to 6.000 0.004
    6.001 to 10.000 0.005
  7. SHAFT SURFACE FINISH:
  8. Surface finish greatly affects the degree of wear on the seal lip. deVries International recommends a surface finish of 10 to 20 Ra measured along the axis of the shaft. We also recommend that this finish be created by plunge grinding the surface. This will prevent a machine lead on the shaft which would accelerate lip wear and possibly pump fluid under the seal lip.

    Surface Finish Conversion Chart

    (micro-inch to micro-meter)

    Micro-inch Micro-meter Micro-inch Micro-meter Micro-inch Micro-meter
    4 0.1 32 0.8 100 2.5
    8 0.2 40 1.0 125 3.2
    10 0.25 50 1.25 160 4.0
    16 0.4 63 1.6 200 5.0
    20 0.5 80 2.0 250 6.3

    SHAFT TYPES

    We offer following types of metal shafts:

    • Automotive Shafts
    • Drive Shafts
    • Gear Shift Levers
    • Gearbox Shaft
    • Guiding Shafts
    • Idler Shafts
    • Industrial Shafts
    • Linear Shafts
    • Machined Shafts
    • Motor Shaft
    • Precision Shafts
    • Propeller Shafts
    • Pump Shaft
    • Pushrods
    • Roller Shaft
    • Rotary Shafts
    • Splined Shafts
    • Stepped Shafts
    • Transmission Shaft

Download PDF version of production of metal shafts.pdf


General Information :
Contact Us :
M3 Excellence Limited,
3rd Floor, Jonsim Place, 228 Queen's Road East,
Wanchai, Hong Kong.
Tel: +86-574-8779 5326
Email: vijay@m3excellence.com
 
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