T-A Pro Assembly
T-A Pro Insert
Tube Sheets: T-A Pro® Drill 
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The Challenge

Say Goodbye to Instability.

A predictable process is what you need. Our customer who drills tube sheets was previously having to run a peck cycle every 0.039" (1.00 mm).

Needing better chip formation and process stability, the customer tested Allied’s T-A Pro drill. Using the “M” ISO-specific stainless steel insert geometry—developed for improved chip formation in difficult to machine stainless steels and heat resistant alloys—they were able to achieve the needed chip formation and eliminate peck cycles all together.

On top of the improved process stability, the T-A Pro had a decreased cycle time and increased tool life lowering the cost per hole by 33%. With the T-A Pro, your application is sure to be solid.

Dependable, consistent, stable--that’s Allied. We’ll find the right solution for your toughest applications.

Product: T-A Pro drill
Objective: Process stability
Industry: Heat exchangers/ Tube sheets
Part: Tube sheets
Material: 316 SS and A36
Hole Ø: 0.6331" (16.08 mm)
Hole Depth: 9.2520" (235.00 mm)
Tolerance: +/- 0.002" (0.05 mm)
Required Surface Finish: 125 Ra μin (3.20 μm)
The Solution
T-A Pro High Penetration Replaceable Insert Drill
  • Drill holder, 15xD length: HTA0C15-20FM
  • Drill inserts, M geometry (stainless steel):  TAM0-16.08
Measure Competitor Drill T-A Pro Drill
RPM 1584 2178
Speed 262 SFM (80.00 M/min) 360 SFM (110.00 M/min)
Feed Rate 0.0079 IPR (0.20 mm/rev) 0.0060 IPR (0.15 mm/rev)
Penetration Rate 12.48 IPM (316.9 mm/min) 12.87 IPM (326.9 mm/min)
Total Part Cycle Time 46 sec 44 sec
Tool Life 50 holes 140 holes
T-A Pro offered 33% cost per hole savings over the competitor tooling.
The Advantages

The AM460 coated T-A Pro insert for stainless steel and HRSA materials provided:

  • 180% tool life increase
  • Improved process stability
  • Decreased cycle time
  • Decreased cost per hole
  • Increased penetration rate