The Bode range of overspeed governors operate according to the pendulum principle: when the rated speed is exceeded, the pulley over which the governor rope runs locks. The friction occurring between the locked rope pulley and the governor rope (tractive force) is transmitted to the safety catch, causing it to engage.
The overspeed governor is considered a safety component, and is therefore subject to a testing process that complies with the requirements EN81-20/50:2014.
The Type 7 governor has a 300mm diameter pulley, test groove and hardened groove. To suit a trip speed of 0.70m/s – 3.43m/s.
Atwell Product Code: TYPE-7-GOV-*.** (asteriks determine governor trip speed, i.e. 0.65 or 1.30 etc.)
Manufacturer Product Code: EU-OG 068
Product: Type 7 Overspeed Governor