Optibelt SPB2355LW Ummantelte Keilriemen

The Optibelt SPB2355LW is a wrapped V-belt in section SPB to DIN 7753-1 / ISO 4184, transmitting power by friction through its wedge flanks in the pulley groove. All three length datums at a glance: inside length Li 2,295 mm, datum length Ld 2,355 mm, outside length La 2,377 mm. When cross-referencing other brands, always compare the same length datum.

The cross-section measures 16.3 × 13 mm at a 40° wedge angle. Any V-belt of section SPB with datum length 2,355 mm is a drop-in replacement, regardless of brand. Key design data: minimum recommended pulley datum diameter 140 mm; weight 0.195 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).

The cross-section matches the US section 5V/15N to ARPM/MPTA — useful on imported machinery; note the ARPM designation number encodes the OUTSIDE length.