3340-5M Timing Belt – 3340 mm × 15 mm

Laser Machine Belts & Motion Components

3340-5M Timing Belt – 3340 mm × 15 mm

The 3340-5M Timing Belt is a closed-loop synchronous drive belt designed for compatible laser engraving and cutting machine motion systems. Featuring a 3,340 mm pitch length, 15 mm width, and 5 mm tooth pitch, this belt uses an HTD curvilinear tooth profile to engage matching timing pulleys for controlled, synchronized movement.

Constructed from neoprene rubber with fiberglass tensile reinforcement, this belt combines flexibility with resistance to stretching during normal operation. Its 668-tooth design and continuous closed-loop construction make it a practical replacement for compatible laser machine drive assemblies and other precision motion equipment.

Key Features

• Closed-loop synchronous timing belt for compatible laser machine motion systems
• 3,340 mm pitch length and 15 mm belt width
• HTD 5M curvilinear tooth profile with a 5 mm pitch
• 668 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
• Approximately 3.8 mm nominal overall belt thickness
• Single-sided tooth design with continuous closed-loop construction
• Suitable for replacing matching timing belts in laser machines and precision motion equipment

Product Specifications

Product Type	Synchronous Timing Belt
Belt Designation	3340-5M-15
Tooth Profile	HTD 5M Curvilinear
Pitch Length	3,340 mm (Approximately 131.50")
Belt Width	15 mm (Approximately 0.59")
Tooth Pitch	5 mm (Approximately 0.197")
Tooth Count	668 Teeth
Nominal Overall Thickness	Approximately 3.8 mm (0.150")
Belt Material	Neoprene Rubber
Reinforcement	Fiberglass Tensile Cords
Tooth Arrangement	Single-Sided
Belt Construction	Closed Loop / Endless
Primary Application	Compatible Timing Belt Drive Systems
SKU	179
Quantity	1 Timing Belt

How the 5M Timing Belt Works

Synchronous timing belts transmit 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 relationship between connected drive components.

The HTD 5M profile features rounded, curvilinear teeth spaced 5 mm apart. These teeth engage 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.

Proper belt tension, pulley alignment, and tooth engagement are important for maintaining accurate motion. Worn or incorrectly installed timing belts can cause vibration, skipped teeth, positioning errors, and premature wear of drive components.

Understanding 3340-5M Belt Specifications

The 3340-5M-15 designation identifies three important dimensions: a 3,340 mm pitch length, a 5 mm tooth pitch, and a 15 mm belt width.

With 668 teeth spaced 5 mm apart, this belt has a total pitch length of 3,340 mm. Pitch length is measured along the belt's pitch line rather than directly around its outside surface.

The HTD 5M profile uses rounded teeth designed to engage matching curvilinear timing pulleys. Correct 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
• 3,340 mm pitch length and 668-tooth count
• 5 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 5M timing belts use different tooth spacing and geometry from HTD 3M and MXL belts. These belt types are not interchangeable. Matching the tooth pitch alone may also be insufficient when pulley tooth profiles differ. Select a replacement that matches the specifications of 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 properly 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.