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Parallel Keys with Round Ends

Parallel keys with round ends feature chamfers on both sides, allowing smoother insertion and better alignment. Compared to standard square-cut keys, the rounded-end design reduces assembly resistance and enhances installation accuracy. This type is widely used in shaft-to-hub connections where precise positioning and repeatable removal are required.​

s45c中碳鋼製作的雙頭圓鍵
白鐵製的雙頭圓鍵 key
316白鐵製作的雙頭圓鍵

Product Features

  • Chamfered round ends on both sides for easy insertion and assembly

  • Stable design ensures accurate torque transmission between shaft and hub

  • Custom dimensions and machining available based on drawings

  • Compatible with JIS B 1301, DIN 6885, and related key standards

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Material & Surface Treatment

  • S45C (Carbon Steel)
    Heat treatable to HRC20–45 (quenching & tempering) for enhanced torque capacity and wear resistance

  • SUS304 (Stainless Steel)
    Corrosion-resistant, suitable for food machinery, electronics, and automation equipment

  • SUS316 (Stainless Steel)
    Superior corrosion resistance for marine, medical, and harsh environments

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Size Range

  • Width (b): 3mm–32mm

  • Height (h): 3mm–20mm

  • Length (L): Standard or fully customized upon request

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Applications

  • Positioning and synchronization of hubs in power transmission systems

  • Keyed connections for machine tool spindles and motor shafts

  • Alignment and locking in automation systems and electric drive units

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Customization & Notes

  • Custom chamfer radius or angle available upon request

  • Special materials, strength levels, and tolerances can be accommodated

  • Recommended shaft/key fit: H7/h9 for precision mating

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