Original Makita Compression Spring (Comp. Spring 7) — part number 233343-7 — replacement compression spring used inside the hammer/rotary mechanism.

This compact helical compression spring (reference no. 43 on the exploded parts diagram) provides the rebound/tension force in the piston/hammer assembly and is supplied as a single replacement piece for service and repairs.

Fits models include many of Makita’s rotary/ demolition hammers — for example HR2450, HR2470/HR2470T, HR2014/HR2016, HR2455/HR2475 and corresponding BHR/DHR series tools such as BHR202, BHR241, BHR261, BHR262, DHR202, DHR263 and DHR264.

Small, inexpensive and direct from the parts catalog, this original Makita spring is the correct replacement when the hammer action feels weak or the mechanism binds; it’s listed in official Makita spare parts listings and sold per unit.

Browse our full range of Makita hammer drill parts.