Original Bosch 2615297373 — Rubber Bearing Sleeve (armature bearing insulator). This small elastomer sleeve fits over the armature bearing to cushion and isolate the bearing from the housing, reduce vibration and prevent metal‑to‑metal contact so the rotor spins smoothly again.

Made from a resilient rubber compound, the sleeve is a simple cylindrical isolator designed for press‑fit replacement during routine bearing service on rotary tools; it’s the part listed in exploded parts diagrams for older Dremel/Bosch rotary models.

Example compatible models (typical fits reported by parts lists and spares catalogs) include Dremel / Bosch rotary tools such as the 200 series, 300 / 3000 series and several 395‑series tools (also cited alongside 595 references). Use these model examples to verify fit against your tool’s parts list.

Quick install note: the sleeve is a single rubber insert that slides onto the bearing/shaft end inside the motor housing — replace it whenever the bearing shows play or the sleeve has hardened or split.

This is an original Bosch replacement listed in Bosch power tool spare parts documentation and intended specifically for repairing small rotary tool internals — a targeted solution when servicing worn bearing interfaces.

Keep in mind that this item is a dedicated replacement for the bearing/armature area of the tool and is one of the common power tool parts you’ll need when restoring smooth operation.