Chicago-Latrobe 44926 13/32 in 135° Cobalt Jobber Drill Bit

Chicago-Latrobe 44926 Cobalt Jobber Drill Bit

The Chicago-Latrobe 44926 is a cobalt jobber length drill bit designed for drilling hard metals such as stainless steel and high-strength alloys. It serves machinists and maintenance technicians who need a durable cutting tool for general-purpose metalwork. The cobalt construction provides high heat resistance and extended tool life compared to standard high-speed steel bits.

135° Split Point for Hard Metal Drilling

The 135 degree split point geometry is the critical specification that determines suitability for hard materials. This angle reduces thrust force and prevents walking on contact, allowing the bit to start accurately without a centre punch. The split point design also produces smaller chips that evacuate more easily from deep holes. Buyers drilling soft materials like wood or plastic will not benefit from this geometry and should choose a different point style.

Cobalt Construction Sustains Performance Under Heat

Cobalt alloy material maintains hardness at the elevated temperatures generated during sustained drilling in tough metals. The TiAlN coating further reduces friction and heat buildup, allowing the cutting edges to stay sharp longer during continuous operation. Unlike uncoated high-speed steel bits that soften quickly under prolonged load, this bit resists thermal degradation for consistent hole quality over extended production runs. The non-coolant-through design relies on external flood or mist cooling for optimal thermal management.