Drill bit SDS MAX OEM BOSCH MAX-4 35x400 mm, 4-flute

The SDS MAX OEM BOSCH MAX-4 35x400 mm, 4-flute drill bit is designed for use with rotary hammers that accept SDS MAX shanks. With a 35 mm diameter and 400 mm overall length, this masonry bit provides extended reach for deep drilling in concrete, reinforced concrete and similar building materials. The four-flute geometry promotes efficient removal of dust and debris from the hole, supporting stable drilling performance over longer depths.

Advantages

This drill bit combines a large-diameter cutting head with a four-flute design to improve chip evacuation and reduce clogging during deep drilling. The SDS MAX shank ensures secure engagement in compatible rotary hammers, enabling reliable power transfer and reduced bit slippage. The extended length gives increased working reach without the need for extensions, while the flute geometry and optimized cutting profile help maintain consistent drilling speed and reduce operator effort.

Suitable for (tasks / use cases)

• Drilling deep holes in concrete and reinforced concrete for anchor installation
• Creating passage holes for pipes and conduits in masonry walls
• Heavy-duty demolition or renovation tasks requiring large-diameter holes
• Professional construction and building-site use with SDS MAX rotary hammers

Key specifications

• Diameter: 35 mm
• Overall length: 400 mm
• Shank type: SDS MAX compatible
• Flute configuration: 4-flute geometry for improved dust evacuation
• Intended materials: concrete, reinforced concrete, masonry

How to use

Select an SDS MAX-compatible rotary hammer with appropriate power and impact settings for the 35 mm bit. Securely insert the SDS MAX shank into the tool’s chuck until it locks. Mark the drilling position and start at low speed to establish the hole, then increase impact action and feed force gradually while maintaining a steady, straight alignment. Withdraw the bit periodically to clear accumulated dust and debris if drilling particularly deep holes, and allow the bit to cool under intermittent heavy use.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, hearing protection and dust mask. For reinforced concrete, select a rotary hammer with sufficient impact energy and consider using slower feed and periodic withdrawal to prolong bit life. Store the bit in a dry place and inspect for wear or damage before each use to maintain safe and efficient operation.