Overspeed Governors
ZR-21 Standard Features
- A17.1/B44 compliant
- Rope Guarding
- Rope Retainers
- cULus approved switch
ZR-21 Machine Room
- 100 – 500 fpm
- 300mm Sheave Size
- 8 – 10mm Rope Size
- Lightweight
ZR-21B Machine Room Less
- 100 – 500 fpm
- 300mm Sheave Size
- 8 – 10mm Rope Size
- Lightweight
Pit Tension Sheaves
ZR-W Features
- Weighted
- 200 – 300mm Sheave
ZR-P Features
- Fixed to Pit Floor
- 200-300mm Sheave
- Adjustable Spring
ZR-R Features
- Spring Tension
- 200 – 300mm Sheave
- Adjustable Spring