Rollkit BSF-M hydraulic brake for sliding gates on slopes, module 4

The BSF-M is a one-way hydraulic brake for sliding gates on an incline. It brakes the gate when it is pushed by hand, for example when you release the operator during a power cut. On the downhill run it relieves the operator and so extends its service life. The brake's gear wheel engages in the same rack as the operator.

Calculating the load

The load on the brake must not exceed 7 Nm, otherwise it will not work reliably and may be damaged. Calculate it as follows: M [Nm] = P × sin β × 0.032, where P is the gate weight in newtons (1 kg = 9.8 N) and β is the slope in degrees.

Example: a 400 kg gate with a 3° slope → 3,920 N × 0.0523 × 0.032 = 6.6 Nm. The brake is suitable.

Installation

• Position – on the post or as close to the operator as possible.
• Height – leave a gap of 1 to 2 mm between the rack and the gear wheel.
• Braking direction – remove the split pin, turn the gear wheel over and secure it again.

If one brake is not enough, use the bracket for joining two BSF-M brakes. Module 4 racks can be found in the toothed racks category, for example the plastic-coated 20 × 27 rack. Please send any questions to eshop@saver.sk.