Price range: $0.50 through $153.00
The 3M Belt delivers precise timing for micro drives, medical devices and robotics. No slip, no lubrication, 98%+ efficiency.
Widths: 6 / 9 / 12 / 15 mm (other on request)
Profile: HTD curvilinear
Build: Chloroprene CR · Glass fiber cord · Nylon 66 tooth facing
MOQ: 200 pcs
Made to ISO 13050 dimensional standards for global interchangeability.
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HTD 3M synchronous belt with 3.00 mm pitch — the smallest HTD profile, engineered for micro drives, medical devices, robotics and compact automation. Our 3M timing belts comply with the ISO 13050 international standard for metric-pitch curvilinear (HTD) profile belts and pulleys. This guarantees tight dimensional tolerances and full interchangeability with equivalent-profile 3 mm curvilinear timing belts supplied by other mainstream international manufacturers, so they can be used as a direct drop-in replacement.

The 3M Belt is the 3.00 mm pitch member of the HTD (High Torque Drive) curvilinear synchronous belt family. It transmits power by tooth engagement with the pulley, so there is no slip, no speed drift and no need for lubrication.
With its ultra-compact 3 mm tooth spacing, 3M is the go-to choice for micro drives where space is at a premium. Transmission efficiency reaches 98% or more, the speed ratio extends to 1:10, and the allowed line speed reaches 45 m/s.
MOQ: 200 pcs, standard widths: 6 / 9 / 12 / 15 mm. Other widths available on request.
Imported high-strength glass fiber cord. Very low elongation, stable pitch length under load.
Imported synthetic chloroprene rubber (CR), blended with hydrogenated nitrile and additives. Heat, cold, oil, water and chemical resistance.
Specially treated Nylon 66 elastic fabric. Low friction, high wear resistance, protects the curvilinear tooth form.
Tooth meshing keeps constant speed ratio under varying loads.
3 mm pitch enables extremely small pulley diameters for tight spaces.
Allows line speeds up to 45 m/s — the highest in the HTD mini range.
No lubrication, no contamination, minimal upkeep.
Almost no power lost to slip or creep.
Curvilinear teeth reduce meshing noise vs. trapezoidal profiles.
CR body resists oil, water, acids and alkalis in normal service.
Excellent dynamic flex, ozone, aging and wear resistance.

On a 3M drive, width sets the load capacity. Pick the narrowest width that handles peak torque, then match pitch length to your center distance.

Download 3M Belt Complete Size Chart & Dimensional PDF
All 3M timing belts are manufactured to the ISO 13050 standard for synchronous belt drives (3M profile), ensuring full dimensional interchangeability with equivalent-profile 3M belts from other mainstream international manufacturers.
3M is the HTD profile with a 3.00 mm tooth pitch. In a code such as 300-3M-9, 300 is the pitch length in mm and 9 is the width in mm.
No. Both use a 3 mm pitch, but 3M is HTD curvilinear and S3M is STS/Super Torque Drive with a flatter tooth top. They need different pulleys and are not interchangeable.
According to the material data, 3M belts allow a line speed up to 45 m/s, with transmission efficiency of 98% or more.
Standard chloroprene construction works from -30 °C to +90 °C.
Common widths are 6, 9, 12 and 15 mm. Other widths can be supplied on request.
Only on HTD 3M pulleys. S3M and other 3 mm profiles have different tooth geometry.
No. All pitch lengths and widths are offered through the product options and trading variations. This page describes the 3M belt type, not a model list.
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