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Drilling Thrust Force, Torque & Motor Power Calculator

Estimate drilling thrust force, torque, and required motor power for a drilling operation.

Your inputs

Change any value to update the result instantly.

Mechanical & Civil Engineering
mm
mm/rev
RPM
N/mm²

Thrust force

1,500 N

Torque

7.5 N·m

Motor power

0.785 kW

Spindle speed

1,000 RPM

What this calculator does

Drilling Thrust Force, Torque & Motor Power Calculator: Applies the standard shop-floor or joint-design relationship so the force, speed, allowance or strength can be worked out from the process inputs.

What your result means

The headline figure is the process setting or joint strength implied by your inputs. Treat it as a starting point to validate against the tool maker's data and a trial part.

Formula and working

Ft = Kt × D × f; T = Kt × D² × f ÷ 4; P = T × N ÷ 9550

  1. 1

    Collect the inputs

    Drill diameter = 10 mm; Feed per revolution = 0.15 mm/rev; Spindle speed = 1,000 RPM; Specific cutting force constant (Kt) = 2,000 N/mm²

  2. 2

    Apply the formula

    Ft = Kt × D × f; T = Kt × D² × f ÷ 4; P = T × N ÷ 9550

  3. 3

    Result

    Thrust force = 1,500 N

Frequently asked questions

Symbols and assumptions

diameter
Drill diameter (mm)
feedPerRev
Feed per revolution (mm/rev)
rpm
Spindle speed (RPM)
specificForce
Specific cutting force constant (Kt) (N/mm²)
  • • Nominal tooling, material and process conditions are assumed; machine, tool-wear and lubrication effects vary in practice.
  • • Recommended cutting data always sits inside the tool maker's published envelope, which takes priority.

Sources and review

Reviewed 2026-09-22 · Next review 2027-09-22

Machinery's Handbook — machining speeds and feeds, sheet-metal working, keys, splines and fitsIndustrial PressShigley's Mechanical Engineering Design — stress, deflection, fatigue, shafts, springs, gears, bearings and fastenersBudynas & Nisbett, McGraw-HillAWS D1.1 Structural Welding Code — Steel: weld throat, effective area and allowable stress definitionsAmerican Welding Society
  • • This is an educational estimate for learning and checking, not a design deliverable.
  • • Real design must follow the governing code or standard for your jurisdiction and be reviewed and signed off by a qualified engineer.
  • • Safety factors, load combinations and material certification are the responsibility of the designer, not of this page.

Important limitation

This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.

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