2388-3M Timing Belt – 2388 mm × 15 mm

Laser Machine Belts & Motion Components

2388-3M Timing Belt – 2388 mm × 15 mm

The 2388-3M Timing Belt is a closed-loop synchronous drive belt designed for compatible laser engraving and cutting machine motion systems. Featuring a 2,388 mm pitch length, 15 mm width, and 3 mm tooth pitch, this belt uses an HTD curvilinear tooth profile to engage matching timing pulleys and maintain synchronized mechanical movement.

Manufactured from neoprene rubber with fiberglass tensile reinforcement, this belt combines flexibility with resistance to stretching during operation. Its 796-tooth design, nylon tooth covering, and continuous closed-loop construction make it a practical replacement for compatible laser machine drive assemblies and other belt-driven motion systems.

Key Features

• Closed-loop synchronous timing belt for compatible laser machine motion and drive systems
• 2,388 mm pitch length and 15 mm belt width
• HTD 3M curvilinear tooth profile with a 3 mm pitch
• 796 evenly spaced teeth for positive engagement with matching timing pulleys
• Neoprene rubber construction provides flexibility during repeated pulley rotation
• Fiberglass tensile cords help resist stretching and maintain dimensional stability
• Nylon fabric tooth covering helps protect against wear from repeated pulley engagement
• Approximately 2.41 mm overall belt thickness
• Single-sided tooth design with continuous closed-loop construction

Product Specifications

Product Type	Synchronous Timing Belt
Belt Designation	2388-3M-15
Tooth Profile	HTD 3M Curvilinear
Pitch Length	2,388 mm (Approximately 94.02")
Belt Width	15 mm (Approximately 0.59")
Tooth Pitch	3 mm (Approximately 0.118")
Tooth Count	796 Teeth
Overall Belt Thickness	Approximately 2.41 mm (0.095")
Belt Material	Neoprene / Chloroprene Rubber
Reinforcement	Fiberglass Tensile Cords
Tooth Covering	Nylon Fabric
Tooth Arrangement	Single-Sided
Belt Construction	Closed Loop / Endless
Primary Application	Compatible Timing Belt Drive Systems
SKU	199
Quantity	1 Timing Belt

How the 3M Timing Belt Works

Synchronous timing belts transfer mechanical movement between rotating pulleys through evenly spaced teeth. Unlike smooth belts that rely primarily on friction, toothed belts engage matching pulley grooves to maintain a consistent rotational relationship between connected drive components.

The HTD 3M profile features rounded, curvilinear teeth spaced 3 mm apart. This design engages matching HTD timing pulleys to transfer movement. The neoprene rubber body provides flexibility, while internal fiberglass tensile cords help resist elongation under normal operating loads.

The nylon tooth covering helps reduce wear at the points where the belt contacts the pulleys. Proper belt tension, pulley alignment, and tooth engagement are important for reliable operation and consistent movement.

Understanding 2388-3M Belt Specifications

The 2388-3M-15 designation identifies three important dimensions: a 2,388 mm pitch length, a 3 mm tooth pitch, and a 15 mm belt width.

With 796 teeth spaced 3 mm apart, the belt has a total pitch length of 2,388 mm. Pitch length is measured along the belt's pitch line rather than directly around its outside surface.

The HTD 3M profile features rounded teeth designed to engage matching curvilinear timing pulleys. Proper tooth geometry, pitch length, width, and tooth count are essential when replacing an existing timing belt.

Confirm Compatibility Before Ordering

Not all timing belts are interchangeable. Before purchasing a replacement, compare the following specifications with your existing belt and pulley system:

• Original belt designation and tooth profile
• 2,388 mm pitch length and 796-tooth count
• 3 mm tooth pitch and matching pulley geometry
• 15 mm belt width and pulley clearance
• Closed-loop belt construction
• Required belt tension and drive configuration

HTD 3M timing belts use different tooth spacing and geometry from MXL and 5M belts. These belt types are not interchangeable. Select a replacement that matches the dimensions and tooth profile required by your machine's motion system.

Installation & Safety

Before replacing a timing belt, turn off the laser machine and disconnect power according to the manufacturer's service instructions. Release existing belt tension and inspect the pulleys, idlers, and belt mounting components for wear, damage, or accumulated debris.

Install the replacement belt with its teeth correctly engaged in the pulley grooves. Ensure proper pulley alignment and adjust belt tension according to the equipment manufacturer's specifications. Avoid forcing the belt onto pulleys or applying excessive tension. Verify smooth, unobstructed movement before returning the machine to operation.