Timing Belt

What is a timing belt?

An industrial timing belt has teeth that mesh with grooved pulleys, so it transmits power without slip and keeps the driver and driven shafts in exact sync. A V-belt relies on friction in the groove instead. That makes timing belts the choice for machines that need precise motion: packaging machines, printers, CNC axes and indexing conveyors.

BANDO timing belt types

• Rubber trapezoidal-tooth timing belts in inch pitches: MXL (0.08 in), XL (1/5 in), L (3/8 in), H (1/2 in), XH (7/8 in) and XXH (1-1/4 in), plus double-sided DXL, DL and DH for drives that use both faces of the belt.
• STS round-tooth timing belts in metric pitches S3M, S4.5M, S5M, S8M and S14M. The curved tooth carries more load than a trapezoidal tooth of similar size and runs quieter. Double-sided DS8M is also available.
• PU timing belts T5 and T10 (5 and 10 mm pitch), steel-reinforced urethane with low stretch and good oil and wear resistance for positioning drives. Double-sided DT5 and DT10 are also available.

How to read a timing belt code

The code gives both the tooth profile and the length. Inch series put the length in tenths of an inch before the code: 210XL is 21.0 in long. MXL is the exception: its number is the tooth count, so 100MXL has 100 teeth and is 8 in long. Metric series put the length in millimeters after the code: S8M 384 is 384 mm and T5-165 is 165 mm. Always replace a belt with the same pitch as the pulleys, because different tooth systems are not interchangeable even when the sizes look close.

Benefits of timing belts

• Exact speed ratio with no slip
• Lower installation tension than V-belts, so less load on the bearings
• No lubrication and quieter than chain drives

Why buy timing belts at OneStockHome

OneStockHome lists hundreds of BANDO timing belt codes with prices online. Narrow them down with the tooth type filter, order them together with V-belts and other industrial belts in one order, and get delivery across Thailand.