![The picture shows a detail of the safety gear BF series progressive safety gear /BF series / EN81-20 / Sautter Lift Components GmbH / SLC](https://slc-liftco.com/wp-content/uploads/2019/07/einstellvorrichtung_bf-fangvorrichtungen-e1564240469149.jpg)
characteristics bf1d-2
![The picture shows the progressive safety gear BF1D-2 from the front Basic body of the BF1D-2 mounted in outer housing, EN81-20 / 50, acting downwards](https://slc-liftco.com/wp-content/uploads/2019/06/BF1-D2_L_2-1-768x519.jpg)
Type:
Progressive safety gear (downwards)
Guide rail:
Drawn / Machined
Guide rail thickness: 9 – 30 mm
Guiede rail width (minimum): 20mm
Maximum tripping speed
Drawn: 2.63 m/s
Machined: 3.23 m/s
Maximum nominal speed (Vn)
Drawn: 2.00 – 2.29 m/s
Machined: 2.50 – 2.81 m/s
Total mass for downwards
Drawn (dry, Vn < 2.29 m/s): 837 – 2,934 kg
Drawn (oiled, Vn < 2.29 m/s): 805 – 3,380 kg
Machined (dry, Vn < 2.29 m/s): 871 – 4,016 kg
Machined (oiled, Vn < 2.29 m/s): 827 – 3,725 kg
Machined (dry, Vn < 2.81 m/s): 871 – 3,364 kg
Machined (oiled, Vn < 2.81 m/s): 827 – 3,205 kg