SWR 3V425 Ummantelte Keilriemen

SWR 3V425 — a wrapped V-belt, section 3V (9N) to the US ARPM/MPTA standard, for friction power transmission between two pulleys. All three length datums at a glance: inside length Li 1,038 mm, datum length Ld 1,076 mm, outside length La 1,080 mm. When cross-referencing other brands, always compare the same length datum. The cross-section measures 9.5 × 8 mm at a 40° wedge angle.

Any V-belt of section 3V (9N) with datum length 1,076 mm is a drop-in replacement, regardless of brand. Key design data: minimum recommended pulley datum diameter 67 mm; weight 0.074 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 metric section SPZ to DIN 7753-1 — always compare metric length datums when switching systems.