Plan a peck drilling cycle. Enter hole depth, drill diameter, peck increment and material to get the number of pecks, the depth of each peck and the total cycle time.
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Request a Proposal →Peck drilling breaks a deep hole into incremental steps, retracting the drill after each peck to clear chips and allow coolant to reach the cutting edge. This is critical for holes deeper than 3× drill diameter.
Peck when hole depth exceeds 3× drill diameter, or when drilling materials that produce long stringy chips (aluminium, stainless 304). For shallow holes in chip-breaking materials like cast iron, continuous drilling is faster and fine.
G83 is the standard deep-hole peck drilling cycle. G73 is the high-speed peck cycle (chip-breaking without full retract). Use G83 for deep holes, G73 for medium-depth holes that need chip-breaking.
Too shallow: excessive cycle time and unnecessary retracts. Too deep: chip packing, drill wandering, poor coolant access, and increased thrust force. Start at 3× D and adjust based on chip evacuation.
Enter the total hole depth and drill diameter. The calculator recommends a peck depth, shows how many pecks are needed, and estimates the cycle time. Adjust based on material — reduce peck depth for challenging materials (titanium, Inconel).
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PECK DRILLING? Peck cycles shorten drill life predictably, which makes cost per hole the number worth watching. See how drill pricing and MOQ work by family.
Peck drilling punishes the point and the coating with repeated entry. Send the hole depth, diameter, material and the coolant pressure your machine can actually deliver.