Copper Bar and Ampacity
Best for copper bar sizing, resistance, cost checks, and current-capacity estimates.
Copper Bar Current Capacity
Thermal-balance ampacity and loss estimation.
Copper Bar Resistance
Resistance, power loss, and voltage drop for copper bars.
Copper Bar Price Calculator
Estimate cost before quotation and procurement.
Metal Weight Calculator
Convert dimensions into copper, brass, or aluminum weight.
Power Supply and Electrical
3-Phase Power Calculator
Active, reactive, apparent power and power factor.
Cable Cross Section Calculator
Cable wire gauge & voltage drop double check.
Motor Power & Current Calculator
Single/3-phase motor FLA, breaker & cable sizing.
Transformer Turns Ratio Calculator
Turns ratio, secondary voltage/current & core area.
Fuse Selection Calculator
Fuse rating with inrush surge & temp derating.
Capacitor Charge/Discharge Calculator
RC time constant τ & voltage charge time.
Lithium Battery Pack Calculator
S/P pack voltage, Ah capacity, Wh energy & BMS.
VFD Braking Resistor Calculator
Brake resistor Ohms, peak power & kW rating.
PCB Signal and Safety
Use for high-voltage spacing, power trace voltage drop, and high-frequency conductor-loss checks.
PCB Spacing Calculator
Estimate clearance from IPC-2221 and IPC-9592 guidance.
Trace Voltage Drop
Estimate resistance, drop, power loss, and temperature rise.
Skin Depth Calculator
Understand frequency-dependent conductor loss.
PCB Impedance Calculator
Microstrip and stripline impedance calculations.
PCB Trace Current Calculator
IPC-2221 external/internal trace ampacity & drop.
Electronics & Circuit Design
Capacitive Power Supply Calculator
Transformerless RC dropper C, Xc & resistor power.
NTC Thermistor Temperature Calculator
B-value & Steinhart-Hart equation with MCU ADC.
LED Resistor Calculator
Series LED resistor, E24 match & power rating.
LC Filter Cutoff Calculator
Cutoff frequency fc, Z0 impedance & Q factor.
MCU PWM Calculator
PWM frequency, duty cycle & resolution bits.
General Electrical Tools
Supporting tools for conversions, resistor decoding, and quick electrical estimation.
Mechanical Design
Pulley Speed & Ratio Calculator
Driver/driven pulley ratio, RPM & belt speed.
Thread Tap Drill Calculator
Metric cut & form tap drill size & depth.
CNC Cutting Speed & Feed Calculator
Spindle RPM, cutting speed Vc & feed Vf.
Gear Module & Center Distance
Spur & helical gear pitch dia & center distance.
Pneumatic Cylinder Calculator
Push/pull force (N/lbf) & ANR air flow.
Bolt Tensile & Shear Strength
Class 4.6-12.9 bolt tensile & shear load capacity.
Compression Spring Calculator
Stiffness, load, and stress verification for compression springs.
Cylinder Force Calculator
Push/pull force and safety factors for pneumatic cylinders.
Gear Parameter Calculator
Spur gear dimensions from module and tooth count.
Chain Length Calculator
Roller chain link count and total length.
Timing Belt Calculator
Belt pitch length and pulley diameter estimation.
Interference Fit Calculator
Min/max interference for shaft-hub connections.
Servo Motor Calculator
Torque, power, and inertia ratio for motor selection.
Ball Screw Calculator
Inertia, torque, and speed for ball screw sizing.
Strength Calculator
Normal, shear, impact, and bending stress checks.
Cam Indexer Calculator
Inertia and torque for rotary cam indexer selection.
Vacuum Cup Calculator
Suction force and cup count for pick-and-place.
Pin & Key Calculator
Pin shear and key crush/shear strength checks.
V-Belt Calculator
Belt pitch length with A/B/C standard matching.
Air Consumption Calculator
Cylinder air flow and solenoid valve Cv sizing.
Press-Fit Force Calculator
Press-fit assembly force from interference.
Cutting Speed Calculator
RPM, surface speed, and feed rate conversion.
Metric Thread Chart
M1–M48 thread dimensions and tap drill sizes.
Ball Bearing Lookup
Deep groove bearing dimensions and load ratings.
Hydraulic Cylinder Calculator
Force, speed, flow and rod buckling check.
Power Torque Converter
kW, Nm, and RPM inter-conversion.
Material Properties
Elastic modulus, density, yield strength lookup.
Column Buckling Calculator
Euler critical load for compression members.
Counterbore Chart
Socket head screw clearance and counterbore sizes.
GD&T Tolerance Lookup
Straightness, flatness, roundness per ISO 2768.
Worm Gear Calculator
Worm drive geometry and center distance.
Gear Rack Calculator
Rack & pinion motor selection.
Y-Series Motor Specs
Power, current, speed and torque lookup.
Tolerance Stack-up
Extreme value dimension chain calculator.
Belt Drive Calculator
Inertia, torque and speed for belt systems.
Tapered Roller Bearing
30/32/33 series bearing specs.
Thrust Ball Bearing
51100-51400 series dimensions.
Imperial Thread Chart
UNC/UNF tap drill sizes.
Material Hardness Chart
SPCC/SECC/SUS Hv lookup.
Blanking Force
Stamping/shearing force calculator.
Key & Keyway Chart
Parallel key dimensions by shaft dia.
Back to English Home
Return to the main English landing page and featured entry points.
Switch to Chinese Content Hub
Open the Chinese homepage for the broader article library and topic clusters.
Get Free Samples & Technical Support
Dongguan/Shenzhen Manufacturing Base: SMT copper bars, PCB terminals, and custom hardware.
