THK KRF - Belt Replacement Method for Motor Return Type

8.
Maintenance
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KRF
8. Maintenance
8-8
Belt replacement method for motor return type
The following gure shows the belt replacement method for KRF for your reference.
1. Remove the mounting bolt, and remove the return cover.

KRF4R/5R

KRF6R
Model number Bolt size
KRF4R M2.6 × 4L
KRF5R M2.6 × 4L
KRF6R M3 × 5L
Bolt type: Thin head (FH type) head screws
2. Loosen the mounting bolt of the motor mounting plate.
Mounting bolt
Model number Intermediate ange type Bolt size
KRF4R WM, WN, WP, WQ M3 × 6L
KRF5R WM, WN, WP, WQ M3 × 6L
KRF6R WP, WQ M3 × 6L
Bolt type: Hexagonal-socket-head type bolt