OPTIBELT 8V4000 RP Ummantelte Keilriemen

The OPTIBELT 8V4000 RP is a wrapped V-belt in section 8V (25N) to the US ARPM/MPTA standard, transmitting power by friction through its wedge flanks in the pulley groove. All three length datums at a glance: inside length Li 10,040 mm, outside length La 10,160 mm. When cross-referencing other brands, always compare the same length datum.

The cross-section measures 25.4 × 23 mm at a 40° wedge angle. Key design data: minimum recommended pulley datum diameter 315 mm; weight 0.575 kg per metre. The fabric wrap protects the tension cord against abrasion, oil and ozone — the robust standard for industrial drives (belt speeds up to about 30 m/s). Permissible ambient temperature range: -30 to +100 °C.

The metric section SPC to DIN 7753-1 is not a substitute for this section: it measures 22 × 18 mm and runs in differently cut pulley grooves. Optibelt manufactures to the S=C Plus (SetConstant) length concept — an advantage when several belts run side by side.