Kollmorgen Essentials Motor Shaft Key Kit - Installation

  • Once a key is installed, do not allow the servo motor to run without an attached load.
  • This is to avoid dangerous results if the key is thrown out by centrifugal forces.

Procedure

  1. Verify all kit contents and required tools are available for kit installation.
    See Kollmorgen Essentials Motor Shaft Key Kit - Contents and Required Tools.
  2. Remove the power to the servo motor prior to installation of the shaft key or seal.
  3. Inspect all surfaces for any damage, including nicks or burrs.
    If nicks or burrs are present, use an abrasive cloth to remove.

    4. Kollmorgen is not liable for user alterations or damages to the shaft or servo motor body.

  4. Place the protective pad on a firm, flat, horizontal surface.
  5. Place the servo motor on the protective pad to avoid damaging the powder coating.

    6. Kollmorgen does not recommend gluing the keyways into the shaft.
  6. Using either the half/modified key or full key, insert the keyway into the keyway slot in the shaft.
  7. Using the plastic- or rubber-lined pliers, press the keyway into the shaft as far as it can go. (Figure 1)
    Press along length of key to ensure it is fully seated along the entire length of the keyway.

    • Support the shaft during the installation process.
    • Excessive radial loads may damage the motor bearings or rotor assembly.
    • Kollmorgen is not liable for injury or damages occurred during any installation process.

    Figure 1: Press the keyway

  8. When the shaft key is installed, verify proper installation using a calibrated measurement device (e.g., calipers).
    The keyway should be flush with the flat surface of the keyway slot. (Figure 2)

    9. Figure 2: Example: Calipers measurement

    Shaft Height over key with Full Key Installed

    The height along the entire keyway length should fall within these tolerance ranges when installing the full key. (Figure 3)

    Motor Series

    Shaft Height "X" (mm)

    KEM-2V020 or KEM-xV040 (200W or 400W)

    15.87 - 16.00

    KEM-xV075 or KEM-xV100 (750W or 1000W)

    21.37 – 21.50

    KEM-xV150 to KEM-4V400 (1500W to 4000W)

    26.71 – 27.00

    Figure 3: Key Shaft

     

    Shaft Diameter with Half/Modified Key Installed

    The modified key should align with the rounded surface of the shaft. (Figure 4)

    Motor Series

    Shaft Diameter (mm)

    KEM-2V020 or KEM-xV040 (200W or 400W)

    14.000 (+0.000/-0.011)

    KEM-xV075 or KEM-xV100 (750W or 1000W)

    19.000 (+0.000/-0.013)

    KEM-xV150 to KEM-4V400 (1500W to 4000W)

    24.000 (+0.000/-0.013)

    Figure 4: Smooth Shaft

    See the individual servo motor series sections for their respective technical data, dimensional drawings, and key and keyway dimension details.

    • If the resulting height exceeds the tolerance range, the key is not properly installed.
      • Repeat Step 7.
    • If the height still remains out of tolerance, contact Kollmorgen Support and Services.
  9. Visually inspect the keyway and shaft for any damage.
  10. Spin the servo motor shaft by hand.
  11. Look and listen for any squeaks, rubs, or other rough movements.
    If the keyway installation is suspect, damage may have occurred during installation.
    Contact Kollmorgen Support and Services.