20mm Height Metal Caster Bearing Wheel
Steel ball caster with two screw-mount holes (no hardware included; use 4-40 or M3 screws) for chassis attachment. 20mm overall height; smooth steel ball provides low-friction contact.
Start wiring
Robotics & mechanics · Motors & actuators
Mechanics
143 other optionsRobot chassis (2WD miniQ, 4WD mecanum, 6WD outdoor), mecanum wheels (48–97mm), brass hex hubs (4–6mm), shaft couplers, 2GT timing pulleys and uArm robotic arms.
1 Degree of Freedom DF05BB Steering Head visual preview1 Degree of Freedom DF05BB Steering Head
16mm Height Metal Caster Bearing Wheel visual preview16mm Height Metal Caster Bearing Wheel
2GT 60-Tooth Aluminum Timing Pulley, 19 mm Bore, 6 mm Belt visual preview2GT 60-Tooth Aluminum Timing Pulley, 19 mm Bore, 6 mm Belt
2WD Arduino Compatible Mobile Platform visual preview2WD Arduino Compatible Mobile Platform
2WD miniQ Robot Chassis visual preview2WD miniQ Robot Chassis
4 mm Brass Hex Mounting Hub (12×12×18 mm) visual preview4 mm Brass Hex Mounting Hub (12×12×18 mm)
4-Soldering Light Chaser Beam Robot Kit visual preview4-Soldering Light Chaser Beam Robot Kit
4mm Flange Set Screw Hub - 28mm in Diameter visual preview4mm Flange Set Screw Hub - 28mm in Diameter
4WD Mecanum Wheel Robot Kit visual preview4WD Mecanum Wheel Robot Kit
4WD MiniQ Robot V2.0 (Arduino Compatible) visual preview4WD MiniQ Robot V2.0 (Arduino Compatible)
4WD Outdoor Mobile Platform for Arduino visual preview4WD Outdoor Mobile Platform for Arduino
5 mm Brass Hex Mounting Hub (12×12×18 mm) visual preview5 mm Brass Hex Mounting Hub (12×12×18 mm)
Related groups
4 groups
12V 184P Gear Motor with Encoder visual previewDC motors
N20 micros in 1:50–1:298 ratios, 6V TT gearbox motors (120:1, 160RPM), 12V quadrature encoder gearmotors up to 45kg.cm, plus coreless micros, vibration discs, USB fans and a few outlier brushless motors.
Motors & actuators · DC & gear motors · 135 parts
15A Single DC Motor Driver visual previewMotor drivers
H-bridge breakouts from 1A to 43A (DRV8871, TB6612FNG, BTS7960), stepper drivers (A4988, TMC260, TB6600), I2C servo/solenoid controllers, and Pi/Arduino shields — sized by current and protocol.
Motors & actuators · Motor drivers · 77 parts
12V Solenoid Valve - DN15 visual previewPumps & valves
Solenoid valves (DN15/DN20 12V), 6V pneumatic air valves, push-pull and lock-style solenoids, 5V electromagnets (3–35kg holding force), 6V electric push rods (10–100mm stroke), peristaltic dosing pumps and submersible water pumps.
Motors & actuators · Pumps & solenoids · 41 parts
2.3KG Serial Bus Servo (6V) visual previewServos
9g micros and clutch PWM servos, IP67 metal servos to 35KG, and ST/SC/CF serial bus servos (2.3kg to 120kg.cm at 24V) — protocol matters as much as torque rating here.
Motors & actuators · Servos · 100 parts