Bosch 1607000378 — genuine Bosch power tool parts set for grinders and straight (inline) grinders. This kit replaces the small drive/bearing assembly: it includes a shielded deep‑groove ball bearing (607‑ZZ), a rubber bearing cover/boot and a magnetic ring (E67) so you can renew the spindle support and seal where the bearing sits. The 607‑ZZ bearing used in the kit measures 7 × 19 × 6 mm (inner Ø × outer Ø × width), which restores smooth rotation and reduces play and vibration when fitted.

Example models this parts set is listed to fit (examples only): GWS 14‑125 (and variants such as GWS14‑125CI / CIE / INOX), GWS 1400 / GWS1400C, GWS 18‑125L, GWS 15‑125 series, GWS 11‑125CI(H), GGS 28 LCE / GGS 8 CE straight grinders, DG250C / DG355LCE / DG490CE die/straight grinders, GP712VS polisher and several 1803EVS / 1806E style angle grinders. Fitment varies by tool revision, so check your tool’s model code before installing.

Neat, compact and ready to swap into the spindle housing — this original Bosch power tool parts set is a straightforward way to replace a worn bearing, restore quieter operation and extend the life of the tool without modifying anything.

Browse our full range of Bosch grinder parts.