305 Engineering Calculators

001

Permissible Residual Unbalance

ISO 21940-11

002

Trial Weight Calculator

003

Permissible Vibration Velocity

ISO 10816

004

Permissible Vibration Displacement

ISO 1940

005

Permissible Vibration Acceleration

ISO 20816

006

Vibration Unit Converter (mm/s, μm, g, dB)

007

Centrifugal Force from Unbalance

008

Harmonic Frequency Calculator (RPM → Hz)

009

Rotor Critical Speed

010

Influence Coefficient (Balancing)

011

Correction Mass Decomposition (2 Planes)

012

Blade Correction Calculator (Fixed Positions)

013

Vibration Isolation Transmissibility

014

Overall Vibration Level

015

Campbell Diagram (Interference Map)

016

Coupling Unbalance Tolerance

017

Vibration Sensor Sensitivity

018

Vibration Phase Angle

019

Vibration Zones A/B/C/D by Machine Type

ISO 20816-1

020

Vibration: Steam Turbines & Generators >40 MW

ISO 20816-2

021

Vibration: Industrial Machines 15 kW–50 MW

ISO 20816-3

022

Vibration: Gas Turbines

ISO 20816-4

023

Vibration: Hydro Turbines & Pump Units

ISO 20816-5

024

Vibration: Reciprocating Compressors

ISO 20816-8

025

Vibration: Gear Drives

ISO 20816-9

026

Vibration: Wind Turbines

ISO 20816-21

027

Shaft Relative Vibration

ISO 7919

028

Condition Monitoring Parameters

ISO 13373

029

Flexible Rotor Balancing Tolerances

ISO 21940-14

030

Bearing Vibration (Anderon)

ISO 15242

031

Proximity Probe Setup

ISO 10817-1

032

Vibration Instrument Class Verification

ISO 2954

033

Vibration Source Identifier by Frequency

034

Remaining Life from Vibration Trend

035

Bearing Defect Frequencies (BPFO/BPFI/BSF/FTF)

036

Gear Mesh Frequency (GMF + Sidebands)

037

Blade Pass Frequency (BPF)

038

Belt Drive Defect Frequencies

039

Motor Electrical Defect Frequencies

040

Roller Chain Defect Frequencies

041

Journal Bearing Frequencies (Oil Whirl/Whip)

042

Pump Cavitation Frequency

043

Bearing Load Rating & L10 Life

ISO 281

044

Modified Bearing Life L10a

ISO 281

045

Bearing Static Load Rating

ISO 76

046

Equivalent Dynamic Bearing Load

047

Bearing Minimum Load

048

Bearing Fit Tolerances (Shaft/Housing)

ISO 12129

049

Bearing Tolerance Classes (P0–P2)

ISO 492

050

Bearing Internal Clearance (C2–C5)

ISO 5753

051

Bearing Grease Quantity

052

Bearing Relubrication Interval

053

Bearing Speed Factor (n·dm)

054

Bearing Thermal Expansion

055

Bearing Heating for Mounting

056

Bearing Removal Force (Puller)

057

Bearing Damage Classification

ISO 15243

058

Bearing Press-Fit Force

059

Natural Frequency (Mass-Spring System)

060

Spring Critical Speed (Surging)

061

Spring Selection by Target Frequency

062

Equivalent Spring Stiffness

063

Vibration Mount Selection

064

Compression Spring Design

065

Rubber Mount Calculator

066

Damping Ratio Calculator

067

Machine Vibration Isolation (Full Design)

068

Balancing Platform Design

069

Rotor Deflection on Supports

070

Shaft Radial Runout

071

Shaft Diameter (Torsion Design)

072

Shaft Deflection Under Load

073

Rotor Moment of Inertia

074

Keyway Connection Calculator

ISO 773

075

Spline Connection Calculator

ISO 4156

076

Press Fit Calculator

077

Ball Screw Calculator

ISO 3408

078

Rotor Acceleration/Deceleration Time

079

Flywheel Energy Calculator

080

Shaft Alignment Tolerances

ISO 14691

081

Flexible Coupling Calculator

DIN 740

082

Thermal Growth Compensation (Alignment)

083

Soft Foot Calculator

084

Coupling Torque (Power & Speed)

085

Torque — Power — Speed

086

Gear Ratio Calculator

087

Belt Drive Calculator (Length & Center Distance)

088

V-Belt Calculator

ISO 5288

089

Timing Belt Calculator (HTD, GT)

ISO 1081

090

Belt Tension Calculator

091

Chain Drive Calculator

092

Roller Chain Calculator

ISO 606

093

Multi-Stage Drive Efficiency

094

Spur Gear Calculator

ISO 6336

095

Gear Accuracy Class

ISO 1328-1

096

Worm Gear Calculator

097

Brake Torque Calculator

098

Power Unit Converter (kW, hp, Nm·RPM)

099

Bolt Tightening Torque

100

Bolt Tensile & Shear Strength

101

Bolt Preload Calculator

102

Flange Bolt Calculator

103

Thread Size Converter (M/UNC/UNF/BSW)

104

Metric Thread Dimensions (ISO)

ISO 261/724

105

Bolt Strength Classes (4.6–12.9)

ISO 898-1

106

Nut Strength Classes

ISO 898-2

107

Bolt Dimensions & Weight

ISO 4014/4017

108

Socket Head Cap Screw (SHCS)

ISO 4762

109

Washer Selection

ISO 7089/7090

110

Rivet Joint Calculator

111

Stud Bolt Torque

112

Hydraulic Wrench Torque (Pressure → Torque)

113

Weld Strength Calculator

114

Weld Quality Levels

ISO 5817

115

Welding Process Classification

ISO 4063

116

O-Ring Selection

ISO 3601

117

Shaft Seal (Oil Seal) Selection

ISO 6194

118

Seal Groove Tolerances

ISO 3069

119

Cable Cross-Section by Current & Length

120

Three-Phase Motor Power

121

Motor Starting Current

122

VFD Selection Calculator

123

Voltage Drop Calculator

124

Ohm's Law Calculator

125

Power Factor Correction (cos φ)

126

Circuit Breaker Selection

127

Braking Resistor for VFD

128

Grounding Calculator

129

Motor Capacitor (Single-Phase)

130

Motor Slip & Actual RPM

131

Motor Nameplate Current (FLA)

132

Motor Torque from Current

133

Hydraulic Cylinder Calculator

ISO 3320

134

Pipe Pressure Drop

135

Reynolds Number Calculator

136

Valve Flow Coefficient (Kv/Cv)

137

Pipe Diameter by Flow Rate

138

Pipe Flow Velocity

139

Hydraulic Valve CETOP Dimensions

ISO 4401

140

Hydraulic Oil Cleanliness Class

ISO 4406

141

Engine Parameters (Power, Consumption)

ISO 3046

142

Hydraulic Accumulator Calculator

143

Pneumatic Cylinder Calculator

144

Air Receiver Volume

145

Compressed Air Consumption

146

Compressed Air Leak Cost

147

Compressed Air Cost (kWh → €/m³)

148

Pneumatic Cylinder Response Time

149

Steel Pipe Dimensions

ISO 4200

150

Pipe Thread Converter (G & R / BSP)

ISO 228 / ISO 7

151

Nominal Bore Converter (DN ↔ inch ↔ mm)

ISO 6708

152

Orifice Flow Calculator

ISO 5167

153

Flange Gasket Calculator

154

Pipe Wall Thickness (Pressure)

155

Pump Head & Power

156

NPSH Calculator

157

Affinity Laws Calculator

158

Fan Selection by Air Change Rate

159

Duct Pressure Loss

160

Fan Shaft Power

161

Specific Speed (Ns) — Pump/Fan

162

Equivalent Duct Diameter

163

Gearbox Oil Volume

164

Beam Bending Calculator

165

Section Moment of Inertia

166

Stress Calculator (Tension/Compression/Shear)

167

Safety Factor Calculator

168

Euler Buckling Calculator

169

Thermal Stress Calculator

170

Fatigue Life Calculator (S-N Curve)

171

Hertz Contact Stress

172

Thin-Wall Pressure Vessel

173

Stress Concentration Factor (Kt)

174

Component Temperature Limits

175

Thermal Expansion Calculator

176

Heat Loss Through Wall

177

Heater Power Calculator

178

Dew Point Calculator

179

Temperature Converter (°C/°F/K/°R)

180

Insulation Thickness Calculator

181

Heat Exchanger (LMTD)

182

Shaft-Hole Fit Calculator

ISO 286

183

General Tolerances (Linear & Angular)

ISO 2768-1

184

General Tolerances (Form & Position)

ISO 2768-2

185

Surface Roughness Converter (Ra/Rz)

ISO 4287

186

Surface Roughness Symbols on Drawings

ISO 1302

187

GD&T Tolerance Reference

ISO 1101

188

GPS Dimensional Tolerances

ISO 14405-1

189

Tolerance Stack-Up Calculator

190

Wire Gauge Converter (AWG/mm²/SWG)

191

Tolerance Independence Principle

ISO 8015

192

Surface Parameters (Ra, Rz, Rq, Rt)

ISO 21920

193

Hardness Converter (HRC/HB/HV/HRB)

194

Metal Weight Calculator

195

Steel Grade Equivalents

196

Steel Mechanical Properties

197

Density / Mass / Volume Calculator

198

Ultrasound Velocity in Materials

199

Strength Unit Converter

200

Allowable Stress by Material

201

Oil Viscosity Classes (ISO VG)

ISO 3448

202

Viscosity Converter (ISO/SAE/AGMA)

203

Oil Viscosity at Temperature

204

Gear Oil Quantity

205

Oil Change Interval

206

Cutting Speed & Spindle RPM

207

Feed Rate Calculator

208

Machining Time Calculator

209

Press / Stamping Force

210

Drilling Parameters

211

Cutting Power Calculator

212

Turning Surface Finish

213

Noise Exposure Calculator

214

Noise Level Addition (dB)

215

Noise Attenuation with Distance

216

Sound Level Converter (dB/dBA/Pa)

217

Sling Capacity at Angle

218

Eyebolt Load Rating

ISO 3266

219

Center of Gravity Calculator

220

Wire Rope Capacity

221

Machine Foundation Mass

222

Foundation Natural Frequency

223

Anchor Bolt Calculator

224

Anchor Bolt Load (Tension + Shear)

225

Grouting Volume Calculator

226

Maintenance Schedule Calculator

227

MTBF / MTTR / Availability

228

Downtime Cost Calculator

229

OEE Calculator

230

Vibration Diagnostic Checklist

231

Predictive Maintenance ROI

232

Spare Parts Inventory

233

Lifecycle Cost Calculator (LCC)

234

Cardan Shaft Unbalance

235

Wheel Balancing Weights

236

Brake Disc Runout

237

Tip Speed — Mulcher / Shredder

238

Hammer Centrifugal Force (Crusher)

239

Hammer Mill Balance

240

Propeller Unbalance (Marine)

241

Separator / Centrifuge Balancing

242

Machine Tool Spindle Unbalance

243

Foundation Vibration from Machine

244

Fan Blade Centrifugal Force

245

Centrifuge G-Force (RCF)

246

Universal Unit Converter

247

Pressure Unit Converter

248

Geometry Calculator (Area & Volume)

249

Angle Unit Converter

250

Flow Rate Converter

251

Torque Unit Converter

252

Viscosity Unit Converter

253

IP Rating Decoder

IEC 60529

254

Flange P-T Rating

ASME B16.5

255

Equipment Failure Classifier

ISO 14224

256

Motor Efficiency IE1–IE5

IEC 60034-30-1

257

CM Method Selector

ISO 17359

258

Safety Valve Sizing

ISO 4126

259

Balancing Machine Sensitivity

ISO 21940-31

260

Thermography Limits

ISO 18434

261

Ex Marking Decoder

IEC 60079

262

AQL Sampling Table

ISO 2859-1

263

Gage R&R

ISO 5725

264

Measurement Uncertainty

ISO 17025

265

Risk Assessment Matrix

ISO 45001

266

FFT Resolution Calculator

267

Vibration Severity Chart

268

Accelerometer Mounting Resonance

269

Vibration Glossary

ISO 19499

270

Vibration Diagnostic Matrix

ISO 13379

271

RUL Prognostics

ISO 13381

272

Turbine Blade Frequency

273

Motor Nameplate Decoder

IEC 60034-1

274

Motor Sizing Calculator

275

Star-Delta Starter Calculator

276

Motor Winding Resistance

277

Insulation Resistance

IEEE 43

278

Shim Thickness Calculator

279

Bolt Pattern Calculator (PCD)

280

Pipe Support Spacing

281

Pipe Flexibility & Expansion Loops

282

Generator Bearing Temp Monitor

283

Lubricant Compatibility Checker

284

RPM to rad/s Converter

285

Length Unit Converter

286

Mass/Weight Converter

287

Speed/Velocity Converter

288

Force Unit Converter

289

Inertia Unit Converter

290

Frequency to Wavelength

291

Paper Machine Roll Balance

292

Cooling Tower Fan Vibration

293

Crusher Rotor Balance

294

H₂S Material Check

ISO 15156

295

NDT Method Selector

ISO 9712

296

Pressure Vessel (EN 13445)

EN 13445

297

Flange PN/Class Lookup

298

Valve Leak Rate

ISO 5208