MXL Closed Loop Timing Belt 6mm Wide | 200MXL–272MXL | Precision Synchronous Drive

The MXL size number represents the belt circumference in tenths of an inch. Divide by 10 to get inches, then multiply by 25.4 for mm. Examples from our range: 200MXL = 2.000" = 50.8mm | 224MXL = 2.240" = 56.9mm | 240MXL = 2.400" = 60.96mm | 272MXL = 2.720" = 69.09mm. You can also verify by multiplying tooth count by the MXL pitch (0.080"): 280 teeth × 0.080" = 22.400" = 568.96mm.

MXL belts are designed for light-duty precision power transmission. The 6mm width is generally suited for low-torque applications such as stepper motor drives in small instruments, desktop printers, and light automation equipment. They are not intended for heavy industrial loads. If your application requires higher torque capacity, consider a wider belt (e.g., 9.5mm or 12.7mm MXL) or a larger pitch standard such as XL or L.

MXL timing belts are typically made from neoprene rubber with a fiberglass tension cord, which provides reasonable resistance to moderate humidity and temperature variation found in indoor environments. They are generally not recommended for prolonged outdoor UV exposure, immersion in water, or contact with oils and solvents. For outdoor or harsh-environment applications, inspect belts regularly and replace when cracking or glazing appears.

Yes. MXL (Miniature Extra Light) is an ANSI/RMA industry-standard tooth profile with a 0.080" (2.032mm) pitch and a trapezoidal tooth form. These belts are compatible with any MXL pulley with a 6mm groove width, regardless of manufacturer. MXL is not interchangeable with XL (0.200" pitch) or L (0.375" pitch) belts even though they share the same trapezoidal tooth shape — always verify the pitch designation on your pulley.

The choice is determined by your machine's existing pulley design and torque requirements. MXL (0.080" pitch) is for miniature, light-duty precision drives — small instruments, desktop printers, and light automation. XL (0.200" pitch) handles medium loads in office equipment and light CNC machines. L (0.375" pitch) is for heavier-duty applications. If your machine already uses MXL pulleys, you must use MXL belts — pitch standards are not interchangeable even if the belt width appears similar.

Count the teeth on your existing or worn belt, then multiply by 0.080" (the MXL pitch) to get the circumference in inches, and multiply by 10 to get the MXL size number. Example: 280 teeth × 0.080" = 22.400" × 10 = 224MXL. Each variant in the size selector shows both the MXL size number and the tooth count so you can cross-reference directly with your machine's documentation or the belt you are replacing.

A closed loop (endless loop) timing belt is molded as a single continuous ring with no joint or splice. This eliminates the weak point found in joined belts, which can introduce vibration, uneven tension, and premature failure at the splice location. For precision equipment such as stepper motor drives, desktop printers, and small instrument mechanisms, a seamless closed loop belt is generally preferred because it maintains consistent tension and accurate tooth engagement throughout its service life.