Linear Bearing LMK12UU 12mm Rod Square Flange Linear Bearing for 3D Printer
Linear Bearing LMK12UU 12mm Rod Square Flange Linear Bearing for 3D Printer
The Linear Bearing LMK12UU is a high-precision linear motion bearing designed specifically for 3D printing applications. It is a critical component in the 3D printing process, enabling smooth and accurate movement of the print head or carriage along the X, Y, or Z-axis.
| The Linear Bearing LMK12UU is responsible for providing frictionless linear motion, allowing the 3D printer's moving components to glide smoothly along the rod, ensuring accurate and consistent print quality. The bearing's primary function is to |
Guide the print head or carriage along the linear rod
Reduce friction and vibration, allowing for smooth movement
Provide precise positioning and repeatability during printing
Support the weight of the print head or carriage and other moving components
Linear Bearing
12mm
Square Flange
High-quality steel or stainless steel
22.5mm (L) x 22.5mm (W) x 30mm (H)
Approximately 50g
-20C to 80C
10kg (vertical), 5kg (horizontal)
| The Linear Bearing LMK12UU is designed for use in 3D printing applications, including |
FFF/FDM 3D printers
SLA/DLP 3D printers
CNC machines
Robotics and automation systems
Other linear motion applications requiring high-precision and smooth movement
Linear Bearing LMK12UU 12mm Rod Square Flange Linear Bearing for 3D PrinterOverviewThe Linear Bearing LMK12UU is a high-precision bearing designed for 3D printing applications. It features a square flange for easy mounting and a 12mm rod diameter for smooth linear motion. This bearing is suitable for a wide range of 3D printing platforms, including desktop, industrial, and DIY setups.Technical SpecificationsType: Linear bearing
Rod diameter: 12mm
Flange size: Square, 22mm x 22mm
Material: High-precision steel
Load capacity: 50 kg (110 lbs)
Speed: Up to 1.5 m/s (3.6 ft/s)
Operating temperature: -20C to 80C (-4F to 176F)Code Examples### Example 1: Arduino-based 3D Printer PlatformThis example demonstrates how to use the Linear Bearing LMK12UU in an Arduino-based 3D printing platform.Hardware RequirementsArduino Mega 2560 board
Linear Bearing LMK12UU
12mm rod
Stepper motor (e.g., NEMA 17)
Motor driver (e.g., A4988)Software Code
```c
const int dirPin = 2; // Direction pin for stepper motor
const int stepPin = 3; // Step pin for stepper motor
const int enablePin = 4; // Enable pin for stepper motorvoid setup() {
pinMode(dirPin, OUTPUT);
pinMode(stepPin, OUTPUT);
pinMode(enablePin, OUTPUT);
}void loop() {
// Move the linear bearing 10mm in the positive direction
digitalWrite(dirPin, HIGH);
for (int i = 0; i < 200; i++) { // Assuming 200 steps per mm
digitalWrite(stepPin, HIGH);
delayMicroseconds(1000);
digitalWrite(stepPin, LOW);
delayMicroseconds(1000);
}
digitalWrite(enablePin, LOW);
delay(1000);// Move the linear bearing 10mm in the negative direction
digitalWrite(dirPin, LOW);
for (int i = 0; i < 200; i++) { // Assuming 200 steps per mm
digitalWrite(stepPin, HIGH);
delayMicroseconds(1000);
digitalWrite(stepPin, LOW);
delayMicroseconds(1000);
}
digitalWrite(enablePin, LOW);
delay(1000);
}
```
### Example 2: Raspberry Pi-based CNC MachineThis example demonstrates how to use the Linear Bearing LMK12UU in a Raspberry Pi-based CNC machine.Hardware RequirementsRaspberry Pi 4 board
Linear Bearing LMK12UU
12mm rod
Stepper motor (e.g., NEMA 23)
Motor driver (e.g., DRV8825)
CNC shield (e.g., CNC Hat)Software Code (Python)
```python
import RPi.GPIO as GPIO
import time# Initialize the GPIO library
GPIO.setmode(GPIO.BCM)# Define the pins for the stepper motor
dir_pin = 17 # Direction pin
step_pin = 23 # Step pin
enable_pin = 24 # Enable pin# Set up the pins as outputs
GPIO.setup(dir_pin, GPIO.OUT)
GPIO.setup(step_pin, GPIO.OUT)
GPIO.setup(enable_pin, GPIO.OUT)try:
while True:
# Move the linear bearing 10mm in the positive direction
GPIO.output(dir_pin, GPIO.HIGH)
for i in range(200): # Assuming 200 steps per mm
GPIO.output(step_pin, GPIO.HIGH)
time.sleep(0.001)
GPIO.output(step_pin, GPIO.LOW)
time.sleep(0.001)
GPIO.output(enable_pin, GPIO.LOW)
time.sleep(1)# Move the linear bearing 10mm in the negative direction
GPIO.output(dir_pin, GPIO.LOW)
for i in range(200): # Assuming 200 steps per mm
GPIO.output(step_pin, GPIO.HIGH)
time.sleep(0.001)
GPIO.output(step_pin, GPIO.LOW)
time.sleep(0.001)
GPIO.output(enable_pin, GPIO.LOW)
time.sleep(1)except KeyboardInterrupt:
# Clean up the GPIO pins
GPIO.cleanup()
```
These examples demonstrate how to use the Linear Bearing LMK12UU in different contexts, including Arduino-based 3D printers and Raspberry Pi-based CNC machines. The code examples provide a basic understanding of how to control the linear motion using the bearing and stepper motor.