Key

Designed for demanding drilling service, the Key (OEM reference 3125 4921 90) supports reliable servicing of Atlas Copco rock-drilling equipment. Within its operating system, the component provides a controlled load-transfer and locating point for rotating, pivoting or articulated machine components. Examples from the listed machine range include BOLTEC 235, BOLTEC 235H and BOLTEC LC.

Reliable field performance depends on resistance to shear loads, bending forces, repeated movement and vibration. Construction based on high-strength, wear-resistant material with accurately machined mounting and contact surfaces helps the part retain its functional geometry under repeated use. As a result, it supports correct alignment, secure movement and dependable force transmission through the connected mechanism.

Supplied as a Delkom aftermarket alternative, this part gives maintenance teams a practical cross-reference option for Atlas Copco drilling equipment. Use Delkom reference 120 400 211 when requesting availability, quantity pricing or technical support.