Double sided belts afford power transmission from either side of the belt and are often used in reversing and serpentine applications.


Double sided timing belts are produced using the same materials as single sided belts, except that the backside precision ground from a fiber-reinforced rubber compound. There is no nylon facing on the backside. Power take off from the backside is limited to 50% of the total Jason/Megadyne design manual rating.


Total belt rating is the same as for single sided belts.

Teeth with nylon cover should always be against the driver pulley.


Double sided timing belts are specified the same way as single sided timing belts except with a D prefix Example: D240H100


Features & Benefits

Fiberglass Tensile Cord High dimensional stability

Chloroprene Belt Body Oil, heat and ozone resistance; high tooth shear resistance

Nylon Tooth Cover Durability and wear resistance, increased power capacity

Double Sided Timing Belts Serpentine drives, reverse rotation of driven shafts



Compound Chloroprene

Cord Fiberglass

Tooth Cover Nylon



Applications General Industry or drives requiring premium efficiency or synchronous applications such as business machines, conveyors, index drives, farm equipment, machine tools, hand power tools, floor care machines.

Engineering Standards Conforms to ARPM standards

Recommended Pulleys Use pulleys made to ARPM standards

Special Widths Special widths are cut to order from our sleeve stock for fast delivery