MXL Timing Belts

Q: What is the difference between MXL and XL timing belts?

MXL belts have a 0.080 inch (2.032mm) pitch and are designed for miniature, very light-load drives. XL belts have a 0.200 inch (5.08mm) pitch, which is 2.5 times larger, and can handle significantly higher loads. Both share the same trapezoidal tooth form but are not interchangeable due to the pitch difference.

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MXL Timing Belts

MXL (Miniature Extra Light) timing belts are the smallest standard trapezoidal profile belt, designed for precision, low-load drives where compact size and accurate positioning are critical. With a 0.080" (2.032mm) pitch, MXL belts are commonly found in small instruments, office equipment, encoders, medical devices, 3D printers, and miniature automation systems. Texas Belting stocks MXL timing belts from leading manufacturers for same-day shipping from Houston.

MXL belts use a trapezoidal tooth form and are typically constructed with neoprene (rubber) bodies, fiberglass tensile cords for dimensional stability, and nylon tooth facing for wear resistance. Urethane MXL belts with steel or Kevlar cords are also available for cleanroom, food-contact, or extended-life applications.

Pitch: 0.080" (2.032mm)

Tooth Profile: Trapezoidal (Miniature Extra Light)

Profile Family: Trapezoidal (MXL, XL, L, H, XH, XXH)

Width Range: 0.10" to 0.50" (2.5mm to 12.7mm typical)

Standard Materials: Neoprene/rubber with fiberglass cord; urethane with steel or Kevlar cord

Temperature Range: -22°F to +185°F (-30°C to +85°C) standard neoprene

Need help selecting MXL belts?

Send us your part number, equipment model, or application details. We will identify the correct belt and confirm pricing and availability.

Request a Quote 888-203-2358

MXL Timing Belt Part Number Decoder

MXL timing belt part numbers encode the belt's pitch length, profile, and width. Understanding the numbering system helps you quickly identify the correct replacement belt from any manufacturer's catalog.

Standard Format: [Pitch Length]-MXL-[Width Code]

Part Number	Pitch Length	Width	How to Read It
20.0-MXL-012	2.00"	0.12" (1/8")	2.00" pitch circumference, MXL profile, 0.12" wide
36.0-MXL-025	3.60"	0.25" (1/4")	3.60" pitch circumference, MXL profile, 1/4" wide
54.4-MXL-019	5.44"	0.19" (3/16")	5.44" pitch circumference, MXL profile, 3/16" wide
68.8-MXL-037	6.88"	0.375" (3/8")	6.88" pitch circumference, MXL profile, 3/8" wide

The pitch length in MXL part numbers is the total length of the belt measured along the pitch line, expressed in tenths of an inch. The width code is expressed in hundredths of an inch (for example, 025 = 0.25" = 1/4"). Some manufacturers may use metric equivalents. Texas Belting can cross-reference MXL belt part numbers from Gates, Continental, Bando, and other brands. Call 888-203-2358 or send us your part number for fast identification.

MXL Timing Belt Width Guide

MXL timing belts are available in several standard widths. The correct width depends on the load, pulley width, and the original equipment specification. Wider belts carry more load but require wider pulleys and more space.

Width (Inches)	Width (mm)	Width Code	Typical Applications
0.10" (approx.)	2.5mm	010	Ultra-light instruments, encoders
1/8" (0.125")	3.175mm	012	Small sensors, miniature drives
3/16" (0.1875")	4.76mm	019	Office equipment, small printers
1/4" (0.25")	6.35mm	025	3D printers, lab equipment, light-duty automation
3/8" (0.375")	9.525mm	037	Larger MXL drives, higher-load miniature systems
1/2" (0.50")	12.7mm	050	Maximum MXL width, heaviest miniature loads

If your application requires a width not listed here, or if you are unsure which width to specify, contact Texas Belting for assistance. Custom widths may be available depending on the manufacturer and order quantity.

MXL vs. Other Miniature and Small Timing Belt Pitches

MXL is the smallest trapezoidal pitch in the standard ANSI/RMA system. The table below compares MXL to other small timing belt profiles to help you evaluate alternatives when designing or replacing a miniature drive.

Profile	Pitch	Tooth Form	Load Capacity	Best For
MXL	0.080" (2.032mm)	Trapezoidal	Very light	Instruments, encoders, office equipment, 3D printers
XL	0.200" (5.08mm)	Trapezoidal	Light to moderate	Small machinery, robotics, general industrial drives
T2.5	2.5mm (0.098")	Trapezoidal (metric T)	Very light	European precision drives, sensors
3M (HTD)	3mm (0.118")	Curvilinear (HTD)	Light	Small servo drives, 3D printers, CNC
GT2 (2mm)	2mm (0.079")	Modified curvilinear (GT)	Very light	3D printers, hobby CNC, precision positioning
T5	5mm (0.197")	Trapezoidal (metric T)	Light to moderate	European industrial drives, packaging equipment

MXL belts offer the most compact tooth pitch among standard ANSI trapezoidal profiles. For applications requiring higher load capacity in a small form factor, consider stepping up to XL (0.200" pitch) or 3M HTD (3mm pitch). For 3D printer builds and hobby CNC projects, GT2 (2mm) belts are a popular alternative with a similar pitch but curvilinear tooth form. See the Timing Belt Tooth Profiles Explained guide for a full comparison of all available profiles.

MXL Timing Belt Materials

MXL timing belts are manufactured in two primary body materials. The right material depends on the operating environment, cleanliness requirements, and expected belt life.

Neoprene (Rubber) MXL Belts

Standard neoprene MXL belts use a fiberglass tensile cord for low stretch and excellent dimensional stability. The tooth face is covered with nylon fabric for reduced friction and wear resistance. Neoprene MXL belts are suitable for most general-purpose miniature drive applications operating within standard temperature and humidity ranges.

Urethane MXL Belts

Urethane (polyurethane) MXL belts are available with steel cord or Kevlar cord reinforcement. Urethane belts offer superior chemical resistance, lower particulate generation, and are suitable for cleanroom, food-contact, and medical device applications. Urethane MXL belts are also available in open-end (continuous roll) form for custom-cut lengths.

Property	Neoprene (Rubber)	Urethane (Polyurethane)
Tensile Cord	Fiberglass	Steel or Kevlar
Tooth Facing	Nylon fabric	Integral (no facing)
Chemical Resistance	Moderate	Excellent
Particulate Generation	Moderate	Very low
FDA/Food Contact	Not typically	Available (FDA-compliant grades)
Open-End Available	No (closed loop only)	Yes
Cost	Lower	Higher

For food-contact or cleanroom applications, see Food Grade Timing Belts and Urethane Timing Belts for additional options across all pitch sizes.

Common MXL Timing Belt Applications

MXL belts are used wherever a compact, precise, positive-drive belt is needed and loads are relatively light. The small tooth pitch allows fine positional control with minimal backlash.

Application	Why MXL Works	Typical Width
Optical encoders and sensors	Minimal backlash, precise tooth engagement	1/8" to 3/16"
Small inkjet and thermal printers	Compact pitch fits small print head carriages	1/4"
3D printers (older/smaller models)	Fine pitch for accurate X/Y positioning	1/4"
Medical and lab instruments	Cleanroom-compatible urethane options, low vibration	1/8" to 1/4"
Office equipment (scanners, copiers)	Quiet operation, long service life at low loads	3/16" to 1/4"
Miniature robotics and actuators	Lightweight, compact, no-slip synchronous drive	1/4" to 3/8"
Vending machines and dispensers	Reliable indexing for product delivery mechanisms	1/4"
Tape drives and media handling	Precise speed control, zero slippage	1/8" to 3/16"

MXL belts are not recommended for heavy industrial loads or high-torque applications. For those requirements, consider L (3/8" pitch), H (1/2" pitch), or HTD timing belts.

MXL Timing Belt Brands We Carry

Texas Belting stocks and sources MXL timing belts from the following manufacturers. We can cross-reference part numbers between brands to find the correct belt for your application.

Brand	MXL Product Lines	Notes
Gates	PowerGrip MXL	Industry standard neoprene MXL belts with fiberglass cord
Continental / ContiTech	Synchroforce, Synchrobelt MXL	Neoprene and specialty compound options
Bando	Bando MXL	High-quality Japanese manufacturing
Diesel Belting	Diesel MXL	Cost-effective replacement option for standard MXL drives
Megadyne	Megapower, Megalinear MXL	Urethane open-end and closed-loop MXL belts

Not sure which brand to specify? Texas Belting's team can help you match the right MXL belt to your application. Request a quote or call 888-203-2358.

MXL Timing Belt FAQs

What does MXL stand for?

MXL stands for Miniature Extra Light. It is the smallest pitch in the ANSI/RMA trapezoidal timing belt system, with a tooth pitch of 0.080" (2.032mm). MXL belts are designed for compact, low-load drives where precise positioning is more important than high power transmission.

What is the pitch of an MXL timing belt?

The pitch of an MXL timing belt is 0.080 inches, which equals 2.032mm. Pitch is measured from the center of one tooth to the center of the next tooth along the pitch line of the belt.

What is the difference between MXL and XL timing belts?

MXL belts have a 0.080" (2.032mm) pitch and are designed for miniature, very light-load drives. XL belts have a 0.200" (5.08mm) pitch, which is 2.5 times larger, and can handle significantly higher loads. XL belts are the next step up in the trapezoidal family when MXL belts do not provide enough load capacity. Both share the same trapezoidal tooth form but are not interchangeable due to the pitch difference.

Can MXL belts be used in 3D printers?

Yes, MXL belts were used in some older and smaller 3D printer designs for X/Y axis motion. However, most modern 3D printers have moved to GT2 (2mm pitch) belts, which offer a curvilinear tooth profile with improved load distribution and reduced backlash at a similar pitch size. If you are replacing a belt on an existing 3D printer, match the original profile exactly. MXL and GT2 pulleys are not interchangeable.

Are MXL timing belts available in urethane?

Yes. Urethane MXL timing belts are available in both closed-loop and open-end (continuous roll) configurations. Urethane MXL belts are reinforced with steel or Kevlar tensile cords. They are suitable for cleanroom, food-contact, and applications where low particulate generation or chemical resistance is required.

What pulleys work with MXL timing belts?

MXL timing belts require pulleys (sometimes called sprockets) machined with a matching 0.080" pitch MXL tooth profile. MXL pulleys are available in a range of tooth counts, typically from 10 teeth up to 72 or more teeth, depending on the manufacturer. The pulley bore, number of teeth, and flange configuration must match your application. See the Timing Belt Sprocket Selection Guide for help choosing the right pulley.

How do I measure an MXL timing belt for replacement?

To identify an MXL belt for replacement, measure the total outside length of the belt (lay it flat and measure the full loop), count the number of teeth, and measure the belt width. You can also read the part number printed on the belt back. Tooth pitch should measure 0.080" (about 2mm) from center to center. For detailed measurement instructions, see How to Measure a Timing Belt.

Does Texas Belting offer same-day shipping on MXL belts?

Yes. MXL timing belts that are in stock at our Houston warehouse ship the same day when ordered before the daily cutoff. For specialty MXL belts (uncommon sizes, urethane construction, or custom widths), lead times are typically 3 to 5 business days. Call 888-203-2358 to confirm availability and shipping options.

Need MXL Timing Belts?

Send us your part number, belt dimensions, or application details for fast identification and pricing.

Request a Quote 888-203-2358