Calculators Archive • Page 6 of 6 • Vibromera

Centrifugal Force from Unbalance Calculator | Free Online Tool

Free online calculator for centrifugal force generated by residual unbalance in rotating machinery. Enter unbalance (g·mm) and speed (RPM) to get force in N, kN, and lbf.

By Nikolai Shelkovenko, 4 weeks ago February 15, 2026

Center of Gravity Calculator | CG = Σmi×xi / Σmi

Free CG calculator for up to 8 components with mass and position.

By Nikolai Shelkovenko, 4 weeks ago February 15, 2026

Cardan/Driveshaft Unbalance Calculator | ISO 21940

Calculate permissible unbalance for cardan/driveshafts per ISO 21940.

By admin, 4 weeks ago February 15, 2026

Campbell Diagram Calculator | Critical Speed Interference | Free Online Tool

Free online Campbell diagram calculator. Plot interference between harmonic orders and natural frequencies. Find critical speed crossing points for rotating machinery.

By admin, 4 weeks ago February 15, 2026

Cable Cross-Section Calculator | Wire Size by Current & Length | Free Online Tool

Free online cable cross-section calculator. Determine the correct wire size (mm²) based on current, cable length, voltage, and allowable voltage drop. Supports copper and aluminum conductors.

By admin, 4 weeks ago February 15, 2026

Braking Resistor Calculator | VFD Dynamic Braking | Free Online Tool

Free online braking resistor calculator for VFD applications. Calculate resistance R=V²dc/P_brake, power rating, and energy per cycle for dynamic braking.

By admin, 4 weeks ago February 15, 2026

Brake Torque Calculator | T = J×α | Free Online Tool

Free online brake torque calculator. Calculate from mass/inertia, speed, stopping time or deceleration using T = J×α. Also disc brake T = F×μ×r. Includes braking energy and power.

By admin, 4 weeks ago February 15, 2026

Brake Disc Runout & DTV Check | Free Tool

Check brake disc thickness variation (DTV) and lateral runout. Enter measurements at multiple points.

By admin, 4 weeks ago February 15, 2026

Bearing Modified Life L10a Calculator | ISO 281 | Free Online Tool

Free online calculator for bearing adjusted rating life L10a per ISO 281. Enter dynamic load rating C, equivalent load P, speed, reliability factor a1, and lubrication factor to compute modified bearing life.

By admin, 4 weeks ago February 15, 2026

Bolt Tightening Torque Calculator | Free Online Tool | ISO 16047 & VDI 2230

Free online bolt torque calculator based on ISO 16047 and VDI 2230 standards. Calculate tightening torque, preload force, and K-factor for metric M3-M48 (coarse & fine pitch) and imperial bolts. Includes friction coefficients, property classes 4.6-12.9, and step-by-step tightening sequences.

By admin, 4 weeks ago February 15, 2026

Bolt Strength Classes (4.6–12.9) | ISO 898-1 Reference

Free online reference for bolt property classes per ISO 898-1. Look up Rm, Rp0.2, proof stress Sp, hardness, and calculate proof load for classes 4.6 to 12.9 with any metric thread M3–M48.

By admin, 4 weeks ago February 15, 2026

Bolt Tensile & Shear Strength Calculator | ISO 898-1 | Free Online Tool

Free online calculator for bolt tensile and shear strength per ISO 898-1. Enter bolt size and property class to get ultimate tensile load Ft and shear capacity Fs.

By admin, 4 weeks ago February 15, 2026

Bolt Preload Force Calculator | ISO 898-1 | Free Online Tool

Free online calculator for bolt preload force. Enter bolt size, property class and utilization factor to calculate assembly preload F = η × Rp × As.

By admin, 4 weeks ago February 15, 2026

Bolt Pattern Calculator | PCD, Angles & Coordinates

Calculate bolt hole X,Y coordinates, angles and distances for any bolt circle pattern. Enter number of bolts, PCD and starting angle. Interactive SVG visualization.

By admin, 4 weeks ago February 15, 2026

Bolt Dimensions & Weight Calculator | ISO 4014/4017 | Free Online Tool

Free online lookup for metric bolt dimensions and weight per ISO 4014/4017. Enter bolt size and length to see head size, thread length, and mass.

By admin, 4 weeks ago February 15, 2026

Blade Pass Frequency Calculator | BPF for Fans & Pumps

Free online blade pass frequency (BPF) calculator for fans, pumps, and impellers. Compute BPF, shaft frequency, period, and harmonics from blade count and shaft RPM.

By admin, 4 weeks ago February 15, 2026

Blade Correction Calculator | Fixed Positions | Fan & Impeller

Free online blade correction calculator. Decompose a correction mass at any angle into masses at two adjacent fixed blade or bolt positions for fan and impeller balancing.

By admin, 4 weeks ago February 15, 2026

Belt Tension Calculator | Deflection, Frequency & Force Method

Free online belt tension calculator. Calculate proper belt tension using deflection method, frequency method, or direct force for V-belts, timing belts, and flat belts.

By admin, 4 weeks ago February 15, 2026

Belt Drive Calculator | Belt Length & Center Distance | Free Online Tool

Free online belt drive calculator. Calculate belt length from pulley diameters and center distance, or find center distance from belt length. L=2C+π(D1+D2)/2+(D2-D1)²/(4C).

By admin, 4 weeks ago February 15, 2026

Belt Drive Defect Frequency Calculator | V-Belt & Timing Belt

Free online calculator for belt drive defect frequencies. Calculate belt frequency, driver/driven shaft frequencies, speed ratio, and belt harmonics for V-belt and timing belt drives.

By admin, 4 weeks ago February 15, 2026

Bearing Vibration Anderon Calculator | ISO 15242 | Free Online Tool

Free online calculator for bearing vibration in Anderon units per ISO 15242. Convert measured vibration to Anderon values across frequency bands for rolling element bearing quality assessment.

By admin, 4 weeks ago February 15, 2026

Bearing Tolerance Class Lookup | ISO 492 | P0 P6 P5 P4 P2 | Free Online Tool

Free online ISO 492 bearing tolerance lookup. Enter bore diameter and tolerance class (P0, P6, P5, P4, P2) to see bore, OD, and width tolerances in micrometers.

By admin, 4 weeks ago February 15, 2026

Bearing Thermal Expansion Calculator | δ = L×α×ΔT | Free Online Tool

Free online calculator for shaft/housing thermal expansion affecting bearing arrangements. Enter shaft length, material CTE, and temperature difference. Shows locating/non-locating arrangement guide.

By admin, 4 weeks ago February 15, 2026

Bearing Static Safety Factor Calculator | ISO 76 | Free Online Tool

Free online calculator for bearing static safety factor s0 = C0/P0 per ISO 76. Enter static load rating C0, static equivalent load P0, and get minimum safety factor recommendations.

By admin, 4 weeks ago February 15, 2026

Bearing Speed Factor n×dm Calculator | Grease & Oil Limits | Free Online Tool

Free online calculator for bearing speed factor n×dm. Enter bore, OD, and speed. Compare against limiting n×dm values for grease and oil lubrication.

By admin, 4 weeks ago February 15, 2026

Bearing Removal Force Calculator | Lamé Equations | Free Online Tool

Free online calculator for bearing extraction force estimate using Lamé equations. Enter bore, shaft OD (interference), contact length, and friction coefficient.

By admin, 4 weeks ago February 15, 2026

Bearing Relubrication Interval Calculator | SKF Method | Free Online Tool

Free online calculator for bearing grease relubrication interval using the SKF method. Enter bearing type, speed, bore diameter, temperature, and contamination to get relubrication frequency in hours.

By admin, 4 weeks ago February 15, 2026

Bearing Press-Fit Force Calculator | Lamé Equations | Free Online Tool

Free online calculator for bearing press-in (assembly) force using Lamé equations. Enter bore, shaft OD, contact length, and material to estimate the force required for cold press-fitting.

By admin, 4 weeks ago February 15, 2026

Trial Weight Calculator for Rotor Balancing

Calculate trial weight mass for rotor balancing. Formula: Mt = Mr × Ksupp × Kvib / (Rt × (N/100)²). Accounts for rotor mass, speed, correction radius, support stiffness, and vibration severity.

By Nikolai Shelkovenko, 4 weeks ago February 15, 2026

Bearing Minimum Load Calculator | Prevent Skidding | Free Online Tool

Free online calculator for bearing minimum load to prevent roller/ball skidding. Enter bearing type, speed, bore diameter, and lubrication type. Uses simplified SKF formula.

By admin, 4 weeks ago February 15, 2026

Bearing L10 Life Calculator (ISO 281)

Calculate bearing basic rating life L10 per ISO 281. Enter dynamic load rating C, equivalent load P, bearing type, and speed to get life in hours and revolutions.

By admin, 4 weeks ago February 15, 2026

Bearing Internal Clearance Calculator | C2 CN C3 C4 C5 | ISO 5753

Free online calculator for radial internal clearance of rolling bearings per ISO 5753-1. Look up clearance range by bore diameter and clearance class C2, CN, C3, C4, C5.

By admin, 4 weeks ago February 15, 2026

Bearing Heating Temperature for Mounting Calculator

Free online calculator for bearing heating temperature required for interference-fit mounting. Calculate thermal expansion needed to slide bearing onto shaft safely.

By admin, 4 weeks ago February 15, 2026

Bearing Grease Quantity Calculator | G = 0.005 × D × B | Free Online Tool

Free online calculator for bearing grease fill quantity. Formula G = 0.005 × D × B gives grams of grease. Enter bearing OD and width. Shows fill percentage guide for different speeds.

By admin, 4 weeks ago February 15, 2026

Bearing Fit & Tolerance Selection Calculator | ISO 12129 | Free Online Tool

Free online calculator for bearing shaft and housing fit selection per ISO 12129. Enter bore diameter, load type, and get recommended tolerance zones for inner and outer rings.

By admin, 4 weeks ago February 15, 2026

Bearing Equivalent Dynamic Load Calculator | P = X·Fr + Y·Fa | Free Online Tool

Free online calculator for bearing equivalent dynamic load P = X·Fr + Y·Fa. Select bearing type, enter radial and axial forces, check e-value, and get X,Y factors automatically.

By admin, 4 weeks ago February 15, 2026

Bearing Defect Frequency Calculator | BPFO BPFI BSF FTF

Free online bearing defect frequency calculator. Compute BPFO, BPFI, BSF, FTF and their harmonics from bearing geometry and shaft speed. Supports common bearing presets.

By admin, 4 weeks ago February 15, 2026

Bearing Damage Classifier | ISO 15243 | Interactive Diagnostic Tool

Free interactive bearing damage classifier per ISO 15243. Select visual symptoms (fatigue, wear, corrosion, electrical erosion, deformation) to identify the likely damage mode and root cause.

By admin, 4 weeks ago February 15, 2026

Beam Bending Calculator | Deflection, Moment & Stress | Free Online Tool

Free online beam bending calculator for simply supported and cantilever beams. Calculate max moment, deflection, and bending stress for point loads and UDL.

By admin, 4 weeks ago February 15, 2026

Ball Screw Calculator ISO 3408 | Free Tool #077

ISO 3408 ball screw calculator. Enter lead, diameter, load, speed. Calculate drive torque, efficiency, critical speed, and life.

By admin, 4 weeks ago February 15, 2026

Balancing Platform Design Calculator — Spring Selection for Field Balancing | Free Online Tool

Design a balancing platform for field rotor balancing. Calculate required spring stiffness, natural frequency, and static deflection to ensure proper vibration isolation.

By admin, 4 weeks ago February 15, 2026

Balancing Machine Sensitivity Calculator | ISO 21940-31

Free balancing machine sensitivity calculator per ISO 21940-31. Calculate minimum detectable unbalance (Umin), achievable balance grade, and residual unbalance ratio for soft and hard bearing machines.

By admin, 4 weeks ago February 15, 2026

AQL Sampling Table | ISO 2859-1 | Acceptance Quality Limit

Free AQL sampling table lookup per ISO 2859-1. Enter lot size, inspection level, and AQL value to find sample size, accept number, and reject number.

By admin, 4 weeks ago February 15, 2026

Angle Unit Converter | Degrees ↔ Radians ↔ Gradians

Convert between degrees, radians, gradians, milliradians, arcminutes and arcseconds.

By admin, 4 weeks ago February 15, 2026

Anchor Bolt Interaction | Tension + Shear | Free Tool

Anchor bolt combined tension+shear interaction check. (T/T_allow)^5/3 + (V/V_allow)^5/3 ≤ 1.

By admin, 4 weeks ago February 15, 2026

Anchor Bolt Pullout Calculator | ACI 318 | Free Tool

Anchor bolt pullout capacity calculator per ACI 318. Inputs: bolt diameter, embedment depth, concrete strength.

By admin, 4 weeks ago February 15, 2026

Allowable Stress Calculator | ASME VIII / EN 13445 | Temperature Derating | Free Tool

Free design allowable stress calculator per ASME VIII and EN 13445. Temperature-dependent properties, creep rupture check, weld joint efficiency. 12+ material grades with real data.

By admin, 4 weeks ago February 15, 2026

Air Receiver Tank Volume Calculator | Free Online Tool

Free online air receiver volume calculator. Compute required tank size from compressor output, cut-in/cut-out pressure, and demand time. V=Q×t×P_atm/(P_max−P_min).

By admin, 4 weeks ago February 15, 2026

Affinity Laws Calculator | Pump & Fan Speed Change

Free online affinity laws calculator for pumps and fans. Calculate new flow, head/pressure, and power when speed or impeller diameter changes. Supports RPM, CFM, m³/h.

By admin, 4 weeks ago February 15, 2026

Calculators

Engineering calculators for vibration analysis and mechanical engineering