SDS Step Bit, HSS Step Drill

• Customization: Available
• Customized: Customized
• Standard: DIN, JIS, AISI
• Model NO.: 4mm~40mm
• Length: Taper-length
• Type: Countersink Drill Bit
• Material: High Speed Steel
• Usage: Well Drilling
• Transport Package: Ctns
• Specification: 4-40mm
• Trademark: DAVAM
• Origin: China
• HS Code: 82023990
• Production Capacity: 50000000
• Package Size: 33.00cm * 33.00cm * 15.00cm
• Package Gross Weight: 15.000kg

Product Description

"SDS STEP BIT" refers to a specialized type of drill bit combining two features:

1. SDS Shank: This is a quick-change chuck system (SDS-Plus or SDS-Max) primarily used with rotary hammer drills. The shank has grooves that lock securely into the drill's chuck, allowing for hammering action and easy bit changes without needing a chuck key. SDS drills are essential for drilling into hard materials like concrete, brick, and stone.

2. Step Drill Bit: This is a conical-shaped bit with progressively larger diameters (steps) along its length. A single step bit can drill multiple hole sizes without needing to change bits. They are primarily designed for drilling clean, burr-free holes in thin sheet metal, plastic, and sometimes wood.

The Key Point: Incompatibility for Hammering

• Standard step drill bits are NOT designed for hammer action. They are cutting tools made for metal/plastic/wood. Using a standard step bit in a rotary hammer (SDS drill) set to hammer mode will destroy the bit almost instantly and could damage the drill or cause injury.

• Step bits require rotary cutting action only (like a standard drill/driver).

When "SDS STEP BIT" Might Exist (Specialized Application):

• Masonry Step Core Bits (Rare): There are specialized core bits designed for drilling large holes in masonry that might have:

  • An SDS shank.

  • A slightly stepped profile (e.g., for drilling through pipes embedded in concrete where you need a larger hole on the surface).

• Misinterpretation: Sometimes people might see a large masonry bit with an SDS shank and describe its appearance as "stepped," but it's not a true step bit for metal cutting.

Common & Correct Uses:

1. SDS Bits: Used exclusively with SDS rotary hammers for drilling into masonry/concrete. Common types are:

   • SDS-Plus Drill Bits (4-12mm typical)

   • SDS-Max Drill Bits (12mm+)

   • SDS Chisels (Point, Flat, Scutch)

   • SDS Core Bits (for large holes)

2. Step Drill Bits: Used exclusively with standard drills/drivers (NO HAMMER FUNCTION) for drilling clean holes in sheet metal, plastic, and thin wood.

In Summary:

• A standard "SDS Step Bit" for cutting metal with hammer action does not exist and is a dangerous misuse of tools.

• SDS rotary hammers use specialized masonry drill bits and chisels.

• Step drill bits are used only in standard rotary drills/drivers for metal/plastic/wood.

• If you need a large hole in masonry, use an SDS core bit with the correct shank (SDS-Plus or SDS-Max).

• If you need multiple hole sizes in metal, use a standard step drill bit in a regular drill/driver.